Recall 213 – Reduced Braking Performance – 2021 Hyundai Accent

December 2, 2021 NHTSA CAMPAIGN NUMBER: 21V937000

Reduced Braking Performance

Reduced braking performance can cause longer brake pedal travel or extend the distance required to stop the vehicle, increasing the risk of a crash.

 

NHTSA Campaign Number: 21V937

Manufacturer HyundaieBay logo Motor America

Components SERVICE BRAKES, HYDRAULIC

Potential Number of Units Affected 76

 

Summary

HyundaieBay logo Motor America (HyundaieBay logo) is recalling certain 2021 Accent vehicles. The brake master cylinder may have been manufactured with sharp edges that can damage the inner oil seal, resulting in reduced braking performance.

 

Remedy

Dealers will replace the brake master cylinder, free of charge. Owner notification letters were mailed February 10, 2022. Owners may contact HyundaieBay logo customer service at 1-855-371-9460. HyundaieBay logo’s number for this recall is 213.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 

Check if your Hyundai has a Recall

 


BRAKE MASTER CYLINDER REPLACEMENT (RECALL 213)

Description: This bulletin describes the procedure to replace the brake master cylinder on certain 21MY Accent (HC) models. The brake master cylinder in the subject vehicles may have been produced with sharp edges on one of the master cylinder’s secondary inner cup seal seats, resulting in premature wear of the inner cup seal. Worn inner cup seals could reduce hydraulic pressure applied by the master cylinder resulting in reduced braking function at the wheels. The driver may experience longer brake pedal travel, change in pedal feel, and extended stopping distance, increasing the risk of a crash.

 

Parts Information:

PART NUMBERPART DESCRIPTIONREMARKS
58510-H9260QQHBrake Master Cylinder, Reservoir Assembly
00232-19053DOT 4 Brake Fluid (12 FL.OZ., 355ML)Requires approximately 2 ¼ bottles
(27 FL.OZ.) of brake fluid per vehicle

 

Service Procedure:

1. Record the customer’s radio presets.

2. Remove Air Cleaner Assembly, Battery, and Engine Control Module.
Refer to the applicable sections of the shop manual for removal and reinstallation.

3. Remove the brake fluid from the master cylinder reservoir.

4. Disconnect the brake fluid level switch connector (A) and disconnect the brake tube (B) from the master cylinder by loosening the tube flare nut.

Brake Tube Flare Nut Torque
lb-ft 9.4-12.3
kgf.m 1.3-1.7
N.m 13.7-16.7

5. Remove the master cylinder and reservoir assembly from the brake booster after loosening the mounting nuts (C).

Master Cylinder Mounting Nut Torque
lb-ft 9.4-12.3
kgf.m 1.3-1.7
N.m 13.7-16.7

6. Reinstall the removed parts in reverse order of removal.

7. Fill the master cylinder reservoir to the MAX (upper) level line.

8. Continue with the brake bleeding procedures below.

CAUTION

  • Do not reuse drained fluid.
  • Always use genuine DOT4 brake fluid. Using non-genuine DOT4 brake fluid can cause corrosion and decrease the life of the brake system.
  • Verify dirt or other foreign matter does not contaminate the brake fluid.
  • Do not spill brake fluid onto the vehicle. This may lead to paint damage. If brake fluid contacts any paint surface, wash the surface off immediately with water.
  • The reservoir on the master cylinder must be at the MAX (upper) level mark at the start of bleeding procedure and checked after bleeding each brake caliper. Add fluid as required.

 

Brake Bleeding Procedure:

1. After reassembly, bleed the brake system.
Use a hose placed in a partially filled container of brake fluid to catch brake fluid from the system.

2. Start with the rear right brake. Attach the clear hose to the brake bleed screw.
Have an assistant slowly pump the brake pedal several times and then fully hold the brake pedal down.
While the brake pedal is held down, open the brake bleed screw for a couple of seconds, then tighten the bleed screw.

3. Repeat two to three times until air bubbles are no longer present in the tube.

Brake Bleed Screw Tightening Torque
lb-ft 5.1-9.4
kgf.m 0.7-1.3
N.m 6.9-12.7

4. Always maintain proper brake fluid level in the reservoir.
After completing the procedure at the rear right position, repeat the procedure in the sequence shown until air bubbles no longer appear in the fluid.

5. Refill the master cylinder reservoir to the MAX (upper) level line.

6. Connect the GDS-M to the vehicle, and then select ‘HCU Air Bleeding Mode’.
System ⇒ ABS/ESP ⇒ HCU Air Bleeding Mode

7. Return to the rear right caliper. Attach the clear hose to the brake bleed screw.
Inform the assistant to select the rear right button to activate the HECU.
Once the HECU has activated, the assistant should press and release the brake pedal repeatedly at regular intervals.
When the activation stops, the assistant should hold the brake pedal down.
Open the brake bleed screw for a couple of seconds, then tighten the bleed screw.
The HECU will activate again. Follow the procedure above.

NOTICE

Disregard the bleeding sequence as noted in the GDS-M. Please follow the sequence in this TSB.

8. Always maintain proper brake fluid level in the reservoir.
After completing the procedure at the rear right position, repeat the procedure in the sequence shown until air bubbles no longer appear in the fluid.

9. Refill the master cylinder reservoir to the MAX (upper) level line.

10. Restore the customer’s radio presets, check that the brakes are operating properly, and clear any DTC.

11. The service procedure is now complete.

 


Customer FAQ

 

Q1: What is the issue?

A1: The brake master cylinder in the subject vehicles may have been produced with sharp edges on one of the master cylinder’s secondary inner cup seal seats, resulting in premature wear of the inner cup seal. Worn inner cup seals could reduce hydraulic pressure applied by the master cylinder resulting in reduced braking function at the wheels. The driver may experience longer brake pedal travel, change in pedal feel, and extended stopping distance, increasing the risk of a crash.

 

Q2: What is the safety concern?

A2: Extended stopping distance could increase the risk of a crash.

 

Q3: What will be done during the recall service at the dealer?

A3: All owners of the subject vehicles will be notified by first class mail with instructions to bring their vehicles to a HyundaieBay logo dealer to have the brake master cylinder and reservoir assembly replaced.

This remedy procedure will be performed at no charge to all affected customers. HyundaieBay logo will provide reimbursement to owners for prior repairs according to the plan submitted to NHTSA on May 16, 2018.

 

Customer Notification

Owners will be notified beginning in late January 2022 regarding a remedy available. NHTSA has posted this recall.

 


Chronology :

November 2021
On November 3, 2021, HMC informed HMA’s NASO of an investigation being conducted in Brazil involving certain HyundaieBay logo/Kia vehicles for an alleged low brake pedal condition. HMC requested NASO to recover master cylinders on thirty-five (35) HyundaieBay logo Accent vehicles based on lot information obtained from the supplier. NASO conducted a review of U.S. market field data and identified one (1) related warranty claim.

NASO requested recovery of the incident brake master cylinder; however, the component was lost in transit by the shipper.

On November 19, 2021, HMC informed NASO of its investigation result confirming that certain HyundaieBay logo Accent vehicles produced with brake master cylinders from the suspect range could damage the brake master cylinder’s inner cup seal resulting in reduced braking function.

Based on this information, on November 23, NASO convened its North American Safety Decision Authority and decided to conduct a safety recall of affected vehicles in the U.S. market.

Regarding field claim counts from all available data sources at the time of the filing, HyundaieBay logo is aware of one (1) vehicle that exhibited a braking concern, with a master cylinder replacement repair date of October 19, 2021.

HyundaieBay logo is not aware of any crashes, fires, or injuries related to the defect condition.

 


1 Affected Product

Vehicle

MAKEMODELYEAR
HYUNDAIeBay logoACCENT2021

 


9 Associated Documents

Manufacturer Notices(to Dealers,etc) – Recall 213 Brake Master Cylinder Low Brake Pedal – Dealer Best Practice Remedy Not Available: December 7, 2021

RCMN-21V937-3197.pdf 269.017KB

 


Recall Acknowledgement

RCAK-21V937-7551.pdf 645.786KB

 


Defect Notice 573 Report

RCLRPT-21V937-7446.PDF 214.174KB

 


Defect Notice 573 Report

RCLRPT-21V937-9341.PDF 214.174KB

 


Remedy Instructions and TSB

RCRIT-21V937-2137.pdf 1170.608KB

 


Manufacturer Notices(to Dealers,etc) – January 27, 2022

RCMN-21V937-4991.pdf 459.217KB

 


ISSUED Owner Notification Letter(Part 577)

RCONL-21V937-6692.pdf 174.273KB

 


Recall Quarterly Report #2, 2022-2

RCLQRT-21V937-8831.PDF 211.224KB

 


Recall Quarterly Report #3, 2022-3

RCLQRT-21V937-8559.PDF 211.305KB

 


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