Recall 225 – Hydrogen Gas Detection Sensors May Fail – 2019-2021 Hyundai Nexo

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This notice applies to your Hyundai, VIN: XXXXXXXXXXXXXXXXX Dear This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Hyundai has decided that a defect, which relates to motor vehicle safety, exists in certain 2019 – 2021 model year Nexo vehicles. Your vehicle, with the VIN shown above, is among the impacted vehicles. Hyundai is initiating a safety recall to repair a condition involving the hydrogen gas detection sensors in the U.S. and Canada. The purpose of this letter is to explain what the recall is about and to keep you informed of Hyundai’s recall implementation plan. We are currently preparing to implement the safety recall remedy which when available, will be performed at no cost to you. We will send you another notification when the remedy is available. What is the problem? The hydrogen gas detection sensors in the subject vehicles may fail to detect leaks in the hydrogen gas delivery system. A hydrogen gas leak could increase the risk of a vehicle fire while parked or driving. What should you do in the interim? We appreciate your patience. Hyundai is currently preparing to implement the recall remedy. You will receive a second notification letter when the remedy is available. In the interim, Hyundai strongly recommends owners to park their vehicles outside and away from structures until the remedy is completed. For updated information regarding this recall, please visit: www.HyundaiUSA.com/Campaign225 If you have other questions If you require further assistance, you may contact the Hyundai Customer Care Center at 1-855-371-9460. If you believe that the dealer and/ or Hyundai has failed or is unable to remedy the defect without charge, or within a reasonable time, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue S.E., Washington, D.C. 20590, or call the toll-free Vehicle Safety Hot Line at 1-888-327-4236 (TTY: 1-800-424-9153), or go to https://www.safercar.gov. Thank you for your attention to this important safety matter. We apologize for any inconvenience this may have caused you. Hyundai Motor America Hyundai Motor America P.O. Box 20839 Fountain Valley, CA 92728-9937 IMPORTANT SAFETY RECALL 2019 – 2021 Nexo Hydrogen Gas Sensor This is an important Safety Recall. • We are currently preparing the remedy. We will notify you when the remedy is ready. • Owners are strongly recommended to park vehicles outside and away from structures. • For updated information, you can visit: www.HyundaiUSA.com/Campaign225 Importante Retiro del Mercado por Motivos de Seguridad — Si tiene preguntas llama 1-800-633-5151 y oprima “8” NHTSA Recall Number: 22V-258 Hyundai Recall Number: 225

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Recall 225 Email Notice: (8;,HYUnDRI ##toustomer_first_name##. A Safety Recalllhas been issued on your ##miadel_year## ##model :short_name##s Hlydrogien Gas Sensor. RecalII##campaign_number## Remedy Available H1is notice applie.s to your vehidle, VIN: ##VINI## W1hat iis the 1probllem? The hydrogen gas d,etedion sell!sors in the subject vellicle.s may fail to detect teaks in ih,e hydrogen gas delivery system. A hydroge,ngas lea could increase the risk of a vehiole fire wlil1ile parked or driving. 0 ur reoordls indicate that your vehicle is affected. Hyundai adviis,es owllers to park their veh-cles ourtsi:de and away frn:rn structures until the recall rep:air is completed. What will Hyu11daii do? Your 1-l yu111da1i d,ealer wi11replace a11 thre<e(3) 11 ydrogen gas detection sensors in your vehicle_This procedure will be performed at NO CHARGE T,oensure your safetv and the quality of your vehiole, please schedule an appoi lltment with a. Hyundai deal:er as soon as possibl:e to corinplete the remedy procedlllrn. ( Schedule appointment ) Additional Information For more information about this critical recall including affected vel1icles or frequently asked questions, you may view J::!yundai’s official camQaign !129 or visit the NHTSA website. Ii you require further assistance, including info on reimbursement or updating ownership, please visit the l:!Y.Undai Consumer Assistance Center or by calling the Hyundai Motor America Virtual Assistant at 1-855-371-9460. To better assist you during your call please have the last 8 characters of your VIN ready to enter when prompted. Last 8 Characters: ##last_8_vin## <E/) HYUnDRI NHTSA.GOV HYUNOAIUSA.COM PRIVACY 0900 Yoaurreeceiving this notice because our records indicate that you own or lease the vehicleidenbfied by the VIN on thtS notice. ThtS is an outbound email only. Please do not replyto this email. This message was transmitted by Hyundai t..totorAmerica. Hyundai is a registered trademark of Hyundai Motor Company. Hyundai mode names are registered trademarks of Hyundai Motor America. All rights reserved.©2023 Hyunda Motor America ************************************************************************************************************** Web version #FIRST_NAME, A Safety Recall has been issued on your #MY Hyundai Nexo’s Hydrogen Gas Sensor. Recall 225 Remedy is Available This notice applies to your vehicle, VIN: XXXXXXXXXXXXXXXXX What Should You Do? Hyundai would like to notify you that there is a critical safety recall on your vehicle that has not been completed. We have prepared the remedy repair for your vehicle, which will be performed by your Hyundai dealer at NO CHARGE. To ensure your safety and the quality of your vehicle, please schedule an appointment with a Hyundai dealer as soon as possible to complete the remedy procedure. Additional Information NHTSA.GOV HYUNDAIUSA.COM PRIVACY You are receiving this notice because our records indicate that you own or lease the vehicle identified by the VIN on this notice. This is an outbound email only. Please do not reply to this email. This message was transmitted by Hyundai Motor America. Hyundai is a registered trademark of Hyundai Motor Company. Hyundai model names are registered trademarks of Hyundai Motor America. All rights reserved. ©2023 Hyundai Motor America. Learn more about the safety concern, remedy repair, and what Hyundai will do for you by visiting our official site or the NHTSA website. If you require further assistance, such as questions on reimbursement or updating vehicle ownership, please visit the Hyundai Consumer Assistance Center or by contacting Hyundai Motor America at 1-855-371-9460. To better assist you during your call please have the last 8 characters of your VIN ready to enter when prompted. Last 8 Characters: LU008254 ************************************************************************************************************** Web version #FIRST_NAME, A Safety Recall has been issued on your #MODEL_YEAR Hyundai Nexo’s Hydrogen Gas Sensor. Recall 225 Remedy is Available This notice applies to your vehicle, VIN: XXXXXXXXXXXXXXXXX What Should You Do? Hyundai would like to notify you that there is a critical safety recall on your vehicle that has not been completed. We have prepared the remedy repair for your vehicle, which will be performed by your Hyundai dealer at NO CHARGE. ************************************************************************************************************** Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service Advisors, Technicians, Body Shop Manager, Fleet Repair Technical Service Bulletin GROUP RECALL DATE July 2022 NUMBER 22-01-062H MODEL(S) NEXO (FE) SUBJECT: HYDROGEN LEAK DETECTION SENSOR REPLACEMENT (RECALL 225) Description: Certain 2019-2021MY NEXO (FE) vehicles may exhibit degradation in performance of the Hydrogen leak detection sensor caused by contamination of the sensor during manufacturing. This bulletin outlines the procedure to replace the Hydrogen Leak Detection Sensor located at the Fuel Processing System (FPS), the Fuel Stack Housing, and the Hydrogen Storage Tanks. Applicable Vehicles: Certain 2019-2021MY NEXO (FE) vehicles produced from 08/10/18 – 06/28/21 Parts Information: PART NAME FIGURE / PART NUMBER REMARKS HYDROGEN SENSOR nit REAR 1 order includes a quantity of 3 35905-M5000QQH Sensing *** Retail Vehicles *** Vehicle repairs related to safety recalls are critically important and must be performed properly in accordance with TSB procedures. Review this bulletin in its entirety prior to beginning any repair work. As required by federal law, dealer must not deliver new vehicles for sale or for lease to customers until all open recalls have been performed. Dealers must also perform all open recalls on used vehicles, demo, and rental vehicles prior to placing them into customer use and whenever an affected vehicle is in the shop for any maintenance or repair. Access the “Vehicle Information” screen (VIS) via WEBDCS to identify open recalls. 🞳 IMPORTANT This TSB includes STUI pictures as a requirement. Where indicated, please include a copy of the RO or last 6 digits of the VIN and date of repair on a piece of paper. Ensure the VIN and date of repair are clearly visible. Finally, please ensure all captured pictures are completed according to the steps in this TSB and uploaded to STUI. All claims submitted that have illegible, incomplete, missing, or incorrect picture(s) are subject to debit. STUI SUBJECT: HYDROGEN LEAK DETECTION SENSOR REPLACEMENT (RECALL 225) Warranty Information: MODEL OP CODE OPERATION OP TIME CAUSAL PART NATURE CODE CAUSE CODE NEXO (FE) 21D044R0 Hydrogen sensor replacement 0.7 M/H 35905- M5000QQH I11 ZZ3 NOTE 1: Submit claim on Campaign Claim Entry Screen. NOTE 2: If a part that is not covered by this recall is in need of replacement while performing this recall, and the affected part is still under warranty, submit a separate claim using the same repair order. If the part is out of warranty, submit a prior approval request for goodwill consideration prior to the work. NOTE 3: The incident parts are subject to callback through the normal Warranty Technical Center (WTC) parts return process. Claim is subject to debit if the parts are not returned. NOTE 4: Each sensor replacement requires two (2) STUI pictures: 1) With the sensor serial numbers clearly visible, 2) With parts installed along with a piece of paper displaying the last 6 digits of the VIN, location of sensor, and date of the repair. Claim is subject to debit if STUI pictures are illegible, missing, incomplete, or incorrect. TSB #: 22-01-062H Page 2 of 7 SUBJECT: Service Procedure: NOTE: HYDROGEN LEAK DETECTION SENSOR REPLACEMENT (RECALL 225) Replace all three Hydrogen Leak Detection sensors. One sensor is mounted at each of the following locations: • One sensor at the Fuel Processing System (FPS) – page 4. • One sensor at the rear of the Fuel Stack Housing – page 5. • One sensor above the Hydrogen storage tanks – page 6. Preparation for all three Hydrogen sensors replacement Disconnect the high voltage safety plug (D) and the 12-volt auxiliary battery (A). Ensure Personal Protective Equipment (PPE) is in proper working order and is used. Refer to the shop manual – Battery Control System > High Voltage Battery Handling Guide and follow the High Voltage Shut-off Procedure. Ensure proper Personal Protection Equipment (PPE) is worn to prevent injury. Verify PPE is not expired and in proper working condition. TSB #: 22-01-062H Page 3 of 7 SUBJECT: HYDROGEN LEAK DETECTION SENSOR REPLACEMENT (RECALL 225) Hydrogen sensor mounted at Fuel Processing System (FPS) 1. STUI Using STUI, take one photograph of the label before mounting the sensor. Make sure the serial number is clear. Upload photo to STUI. 2. Open the hood of the vehicle, remove the four fasteners (A) at the Fuel Cell trim cover and remove the trim cover. 3. Loosen the two Hydrogen sensor bolts (B), remove the Hydrogen sensor connector (C), and remove the Hydrogen sensor (D). Notes: – Remove connector after loosening bolts. – Be careful not to drop parts. 4. Install the new Hydrogen sensor (D) in the reverse order of removal. When installing the connector, be sure a “click” sound is heard. Tightening Torque: 7.8 N.m (0.8 kgf.m, 5.8 lb-ft) Be sure to install the sensing unit facing the FPS valve assembly. 5. Using STUI, photograph the installed Hydrogen leak detection sensor with attached note (as shown in the picture to the right). STUI Using STUI, take one photo of the installed Hydrogen leak detection sensor that includes the sensor and a piece of paper containing the last 6 digits of the VIN or the RO #, the location of sensor, and date of repair. Upload photo to STUI. Hydrogen Detection Sensor TSB #: 22-01-062H Page 4 of 7 SUBJECT: HYDROGEN LEAK DETECTION SENSOR REPLACEMENT (RECALL 225) Hydrogen sensor mounted at Fuel Stack Housing 1. STUI Using STUI, take one photograph of the label before mounting the sensor. Make sure the serial number is clear. Upload photo to STUI. 2. Loosen the 2 Hydrogen sensor bolts (E) using a socket wrench. – Be careful not to drop parts. 3. Remove the Hydrogen sensor connector (F) from the hydrogen sensor (G). Note – Remove the connector after loosening the bolts. – Be careful not to drop parts. 4. Install the new Hydrogen sensor (G) in the reverse order of removal. When installing the connector, be sure a “click” sound is heard. Tightening Torque: 7.8 N.m (0.8 kgf.m, 5.8 lb-ft) Be sure the sensing unit is facing into the fuel stack housing. 5. Using STUI, photograph the installed Hydrogen leak detection sensor with attached note (as shown in the picture to the right). STUI Using STUI, take one photo of the installed Hydrogen leak detection sensor that includes the sensor and a piece of paper containing the last 6 digits of the VIN or the RO #, the location of sensor, and date of repair. Upload photo to STUI. Hydrogen Detection Sensor TSB #: 22-01-062H Page 5 of 7 SUBJECT: HYDROGEN LEAK DETECTION SENSOR REPLACEMENT (RECALL 225) Hydrogen sensor mounted at Hydrogen Storage Tanks 1. STUI Using STUI, take one photograph of the label before mounting the sensor. Make sure the serial number is clear. Upload photo to STUI. 2. Raise the vehicle using a lift. 3. Insert a socket wrench with a suitable extension into the tool space (opening) between the exhaust pipe and rear tank cover and loosen the two hydrogen sensor nuts (H). 4. Remove the hydrogen sensor connector (I) through the tool entry space. 5. Install the new Hydrogen sensor (J) in the reverse order of removal. When installing the connector, be sure a “click” sound is heard. Tightening Torque: 7.8 N.m (0.8 kgf.m, 5.8 lb-ft) Be sure the sensing unit is facing toward the tanks (away from the body sheet metal). 6. Using STUI, photograph the installed Hydrogen leak detection sensor with attached note (as shown in the picture to the right). STUI Using STUI, take one photo of the installed Hydrogen leak detection sensor that includes the sensor and a piece of paper containing the last 6 digits of the VIN or the RO #, the location of sensor, and date of repair. Upload photo to STUI. TSB #: 22-01-062H Page 6 of 7 SOR REPLACEMENT (RECALL 225) TSB #: 22-01-062H Page 7 of 7 SUBJECT: 7. Reconnect the high voltage safety plug (D) and the 12-volt auxiliary battery (A). Refer to the shop manual – Battery Control System > High Voltage Battery Handling Guide and follow the High Voltage Shut-off Procedure. Ensure proper Personal Protection Equipment (PPE) is worn to prevent injury. Verify PPE is not expired and in proper 8.

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This notice applies to your Hyundai, VIN: XXXXXXXXXXXXXXXXX Dear This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Hyundai has decided that a defect, which relates to motor vehicle safety, exists in certain 2019 – 2021 model year Nexo vehicles. Hyundai is initiating Recall Campaign 225, a safety recall to repair a condition involving the hydrogen gas detection sensors in these vehicles in the U.S. market. Hyundai is conducting this action to ensure the safety of its vehicles for Hyundai customers. Our records indicate that your vehicle is affected by this recall campaign. What is the problem? The hydrogen gas detection sensors in the subject vehicles may fail to detect leaks in the hydrogen gas delivery system. A hydrogen gas leak could increase the risk of a vehicle fire while parked or driving. What will Hyundai do? Your Hyundai dealer will replace all three (3) hydrogen gas detection sensors in your vehicle. This procedure will be performed at NO CHARGE to you. What should you do? Please contact your nearest Hyundai dealer to schedule this procedure by visiting www.HyundaiUSA.com/us/en/dealer-locator or calling 1-855-371-9460. The actual time required to perform this procedure on your vehicle will take less than one hour, however, your vehicle may be needed longer. Therefore, we recommend scheduling a service appointment to minimize inconvenience. Hyundai strongly recommends owners to park their vehicles outside and away from structures until the recall repair is complete. If you have other questions If you require further assistance, you may contact the Hyundai Customer Care Center at 1-855-371-9460. If you believe that the dealer or Hyundai has failed or is unable to remedy the defect without charge, or within a reasonable time, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue S.E., Washington, D.C. 20590, or call the toll-free Vehicle Safety Hot Line at 1-888-327-4236 (TTY: 1-800-424-9153), or go to https://www.safercar.gov. Thank you for your attention to this important safety matter. We apologize for any inconvenience this may have caused you. Hyundai Motor America Hyundai Motor America P.O. Box 20839 Fountain Valley, CA 92728-9937 IMPORTANT SAFETY RECALL 2019 – 2021 Nexo Hydrogen Gas Sensors Importante Retiro del Mercado por Motivos de Seguridad — Si tiene preguntas llama 1-800-633-5151 y oprima “8” NHTSA Recall Number: 22V-258 Hyundai Recall Number: 225 This is an important Safety Recall. • The recall will be performed on your vehicle at NO CHARGE to you. • Having this procedure completed will help reduce the risk of potential vehicle fire. • Owners are advised to park their vehicles outside and away from structures until the recall repair is complete. • Please contact your nearest Hyundai dealer to schedule this procedure as soon as possible. To locate your nearest dealer and schedule your appointment please visit: www.HyundaiUSA.com/Campaign225

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Recall 225: Hydrogen Leak Detection Sensor Replacement – Dealer Best Practice July 25, 2022 Updates to this Document Date • TSB 22-01-062H – Remedy Available 07/25/2022 Description of Campaign: Certain 2019-2021MY NEXO (FE) vehicles may exhibit degradation in performance of the Hydrogen leak detection sensor caused by contamination of the sensor during manufacturing. The TSB 22-01-062H outlines the procedure to replace the Hydrogen Leak Detection Sensor located at the Fuel Processing System (FPS), the Fuel Stack Housing, and the Hydrogen Storage Tanks. Affected Vehicles: ⮚ Certain 2019-2021MY Hyundai NEXO vehicles produced from 08/10/2018 – 06/28/2021 by Hyundai Motor Company (“HMC”) for sale in the U.S. ⮚ To check vehicle specific recall applicability, access the “Vehicle Information” screen (VIS) via WebDCS. ⮚ As of this remedy launch, there are no new vehicles currently in dealer stock. The Fix: Remove and replace all three (3) of the Hydrogen Leak Detection Sensors. • Estimated Repair Time : 0.7 M/H • Recommended Technician Training Level: Expert o Technician must have completed the Fuel Cell Electric Vehicle Training – Classroom (SVCHFCEVTRAIN222_1097) instructor led training course Recommended Alternative Transportation: It is recommended that Service Rental Cars (SRCs) be made available and provided for customers during the repair. Dealers performing this recall remedy on NEXO vehicles must be NEXO certified. Claims submitted by Non NEXO certified dealers will not be accepted by HMA NOTICE Best Practice Checklist: Reservation: Did you check WebDCS for additional campaigns or recalls? □ Yes □ No Readiness: Are parts in stock to complete this campaign? □ Yes – Provide customer with ETA □ No – Contact parts and get ETA Reception: Did you explain to the customer the expected repair time based on the repair? □ Yes □ No Reception: Did you explain to customer the warranty requirements? □ Yes □ No Reception: Did you offer the customer Alternative Transportation? □ Yes □ No Repair: Did you provide the customer with an eMPI? □ Yes □ No Repair: Does the Technician meet the recommended training requirements to complete this recall/campaign? □ Yes □ No Return: Did you get the customer’s signature on all warranty lines in addition to the final RO? □ Yes □ No Warranty: • NOTE 1: Submit claim on Campaign Claim Entry Screen. • NOTE 2: If a part that is not covered by this recall is in need of replacement while performing this recall, and the affected part is still under warranty, submit a separate claim using the same repair order. If the part is out of warranty, submit a prior approval request for goodwill consideration prior to the work. • NOTE 3: The incident parts are subject to callback through the normal Warranty Technical Center (WTC) parts return process. Claim is subject to debit if the part is not returned. • NOTE 4: Each sensor replacement requires two (2) STUI pictures: 1) With the sensor serial numbers clearly visible, 2) With parts installed along with a piece of paper displaying the last 6 digits of the VIN, location of sensor, and date of the repair. Claim is subject to debit if STUI pictures are illegible, missing, incomplete, or incorrect. Parts: • This part number will be on Critical Supply Parts (CSP); dealers will require an applicable campaign VIN to order. Customer Notification NHTSA has posted this recall. Owners are expected to be notified in August 2022 of a remedy available. Customer FAQ: Q1: What is the issue? A1: The hydrogen gas detection sensors in the subject vehicles may degrade over time, resulting in an inability to detect leaks in the hydrogen gas delivery system and illuminate the associated warning light. Q2: What is the safety concern? A2: A failure to alert the operator of a hydrogen gas leak could increase the risk of a vehicle fire while parked or driving. Q3: Can owners continue driving these vehicles? Should they park them indoors or outdoors? A3: Owners can continue driving these vehicles. However, Hyundai strongly recommends parking their vehicles outside and away from structures until the recall remedy is completed. Q4: Has there been any accidents or injuries? A4: If a customer does not feel safe driving in his/her vehicle, he/she should bring his/her vehicle to the dealership and be put in a service rental vehicle until the remedy is completed. Q5: Has there been any accidents or injuries? A5: As of the date of filing to NHTSA (04/14/2022), there were no related fires or injuries in the U.S. or Canada. Q6: What will be done during this recall service at the dealer? A6: Owners can continue driving these vehicles. However, Hyundai strongly recommends parking their vehicles outside and away from structures until the recall remedy is completed. All owners of the subject vehicles will be notified by first class mail with instructions to bring their vehicles to a Hyundai dealer to have the hydrogen gas detection sensors replaced. This remedy will be offered at no cost for all affected customers. Q7: What if the owner incurred out-of-pocket expenses for obtaining a remedy for the recall condition? A7: Hyundai will provide owners of affected vehicles reimbursement for out-of-pocket expenses incurred to obtain a remedy for the recall condition in accordance with the reimbursement plan submitted to NHTSA on February 24, 2022. Contact Reference: Please see the following page for commonly referred to contacts. Thank you for your prompt attention to this important safety matter and continued commitment to Hyundai customers. Key Contact Information Dealer Support Contact Information Description Parts Techline Warranty HELPREP Line Warranty Prior Approval (PA) Center Xtime Technical Support AutoLoop Technical Support CDK Technical Support Customer Support Hyundai Customer Care Center (Recall /Campaign Questions) Hyundai Recall /Campaign Website Hyundai Customer Care Center (GeneralQuestions) Hyundai Roadside Assistance HyundaiPartsHotline@MobisUSA.com 1-800-545-4515 1‐800‐325‐6604 1‐877‐446‐2922 PA@hmausa.com Support@xtime.com 1‐866‐984‐6355 Support@autoloop.com 1-877-850-2010 https://serviceconnect.support.cdk. com/ Contact Information 1‐855‐671‐3059 www.hyundaiusa.com/recall 1‐800‐633‐5151 1-800-243-7766 Parts ordering hotline Vehicle Technical Support for Hyundai Dealer Technicians Warranty Claim questions for Hyundai Dealers Warranty Prior Approval (PA) Center for Hyundai Dealers Assistance with Car Care Scheduling: • Appointment / Shop Capacity Management / Campaign Integration / Operation Codes Assistance with Car Care Scheduling: • Appointment / Shop Capacity Management / Campaign Integration / Operation Codes Assistance with Car Care Scheduling: • Appointment / Shop Capacity Management / Campaign Integration / Operation Codes Description Customer questions or concerns related to recall or service campaigns Updated information related to the specific recall or service campaign Customers general questions, non‐campaign related Hyundai Roadside Assistance Key Reference Information Name Source Campaign Central Consolidated repository of recall and service campaign dealer best practices. Located on the service tab homepage in www.HyundaiDealer.com Car Care Scheduling (Xtime) – Tutorials Car Care Scheduling (Xtime) – Recall Appointment Notification Parts – Campaign Parts Management (CPM) Procedure Service Rental Car (SRC) Program Technical Service Bulletin (TSB) Uncompleted Campaign VIN Listing Recall Campaign Website NHTSAWebsite www.HyundaiDealer.com > Service > Dealer Resources > Documents Library > Car Care Scheduling 1. Log into Xtime 2. Under the menu at the top left, select ‘CONFIGURE’ 3. Under the dealership tab, click “EMAIL COMMUNICATION” 4. Slide the toggle to “ADVANCED” 5. Populate as many e-mails as desired in the “PARTS DESK EMAIL FIELD” As applicable; www.HyundaiDealer.com > Parts > Documents Library > Campaign Parts Management SRC Documentation: www.HyundaiDealer.com > Service tab > Documents Library > Service Rental Car TSD: www.HyundaiDealer.com > Service tab > SRC Fleet Mgmt Software Insurance: www.HyundaiDealer.com > Service tab > SRC Insurance www.HyundaiDealer.com > Service tab > Hyundai Tech Info A listing of vehicles is located on WEBDCS > SERVICE tab > select UNCOMPLETED CAMPAIGN VIN LISTING – Dealer Stock (New, SRC, CPO, etc.) and Retailed. www.hyundaiusa.com/recall www.safercar.gov Appendix Updates to this Document Date • Remedy Not Available 04/18/2022

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-258 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Submission Date : Hyundai Motor America APR 14, 2022 NHTSA Recall No. : 22V-258 Manufacturer Recall No. : 225 Manufacturer Information : Manufacturer Name : Hyundai Motor America Address : 10550 Talbert Avenue Fountain Valley CA 92708 Company phone : 800-633-5151 Population : Number of potentially involved : 922 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2019-2021 Hyundai Nexo Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : CNG/LPG Descriptive Information : Based on manufacturing records, the subject population for this recall includes certain 2019-2021 model year Nexo vehicles produced by Hyundai Motor Company (“HMC”) within the specified production date range for sale in the U.S. Production Dates : AUG 10, 2018 – JUN 28, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The hydrogen gas detection sensors in the subject vehicles may degrade over time, resulting in an inability to detect leaks in the hydrogen gas delivery system and illuminate the associated warning light. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A failure to alert the operator of a hydrogen gas leak could increase the risk of a vehicle fire while parked or driving. Description of the Cause : The sensor catalyst was produced with insufficiently sized platinum particles allowing silicon to accumulate on the catalyst surface and impede detection of hydrogen gas. Identification of Any Warning NR that can Occur : Involved Components : Part 573 Safety Recall Report 22V-258 Page 2 Component Name 1 : Hydrogen Sensor Component Description : Sensor for detection hydrogen gas concentration Component Part Number : 35905-M5000 Supplier Identification : Component Manufacturer Name : Sejong Company Address : 82, Hyoja-ro Buk-gu Ulsan Foreign States 44252 Country : Korea, Republic of Chronology : January 2022 On January 17, 2022, HMC received information regarding a manufacturing change implemented by the supplier to increase the platinum particle size on the catalyst component(s) of the hydrogen gas detection sensors equipped in certain 2019-2021 model year Nexo vehicles in South Korea. HMC notified HMA’s NASO of the changepoint on January 24, 2022, prompting a new joint investigation into the condition and its potential effect on vehicles in the field. NASO began a review of field information for potential incidents in the U.S. related to the reported condition. February 2022 NASO completed its review of U.S. field information and found no incidents had occurred in the U.S. Per a request made by HMC’s investigative team, NASO recovered two (2) functional sensors from in-use fleet vehicles and sent them to HMC for replication testing and root cause analysis. March 2022 In early to mid-March, NASO continued to actively monitor field information for potential incidents. No incidents were found during this time. Two (2) additional functioning sensors from fleet vehicles were recovered and sent to HMC to aid in testing on March 24, 2022. On March 30, 2022, HMC shared its findings with NASO. According to HMC, laboratory testing confirmed that the smaller platinum particle size on the sensor catalysts allowed for silicon to accumulate on the catalyst surface and create a film that lowered the sensor’s ability to detect hydrogen gas concentration. HMC informed NASO and advised of potential vehicles affected in the U.S. and Canada. April 2022 Based on the information received from HMC, on April 7, 2022, NASO convened its North America Safety Decision Authority and decided to conduct a new recall of affected Hyundai Nexo vehicles in the U.S. to address the defect condition involving the hydrogen gas detection sensor(s). The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 22V-258 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 As of the date of this filing, there are no confirmed fires, injuries, or related incidents in the U.S. Description of Remedy : Description of Remedy Program : Owners can continue driving these vehicles; however, Hyundai recommends parking their vehicles outside and away from structures until the recall remedy is completed. All owners of the subject vehicles will be notified by first class mail with instructions to bring their vehicles to a Hyundai dealer to have the hydrogen gas detection sensors replaced. This remedy will be offered at no cost for all affected customers. Hyundai will provide reimbursement to owners for prior repairs in accordance with the plan submitted to NHTSA on February 24, 2022. How Remedy Component Differs from Recalled Component : Identify How/When Recall Condition was Corrected in Production : The remedy sensors are produced with catalysts containing sufficiently sized platinum particles. Platinum particle size control measures were implemented into the supplier’s manufacturing process on October 15, 2021. Recall Schedule : Description of Recall Schedule : Dealers and owners will be notified in accordance with the dates specified in this report. Planned Dealer Notification Date : JUN 13, 2022 – JUN 13, 2022 Planned Owner Notification Date : JUN 13, 2022 – JUN 13, 2022 * NR – Not Reported

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