Improperly Welded Drivetrain Gear – 2022 Mercedes-Benz EQB

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May 10, 2024 NHTSA CAMPAIGN NUMBER: 24V331000

Improperly Welded Drivetrain Gear/FMVSS 114

An improperly welded spur gear can fail and result in a vehicle rollaway, increasing the risk of a crash.

 

NHTSA Campaign Number: 24V331

Manufacturer Mercedes-Benz USA, LLC

Components POWER TRAIN, ELECTRICAL SYSTEM

Potential Number of Units Affected 283

 

Summary

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022 EQB 300 and EQB 350 vehicles. The welded spur gear within the front axle electric drivetrain may not have been welded properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 114, “Theft Protection.”

 

Remedy

Dealers will replace the front axle electric drivetrain, free of charge. Owner notification letters are expected to be mailed July 9, 2024. Owners may contact MBUSA at 1-800-367-6372. MBUSA’s number for this recall is 2024MMNNNN.

 

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 Mercedes-Benz has a Recall

 


Chronology :

In June 2022, MBAG launched investigations based on individual field reports from outside the US describing instances of noises or vibrations related to the electric drivetrain. In the course of the analysis, it was determined that in the subject cases the weld on the spur gear within the electric drivetrain was broken due to excessive material hardness.

In parallel, potential consequences were evaluated. Those analyses determined loss of vehicle propulsion can be ruled out, as propulsion would still be maintained by the separate rear axle electric drivetrain, which is not affected by loss of front drivetrain function. This evaluation did not identify a safety concern or FMVSS noncompliance.

In November 2023, MBAG’s ongoing evaluation and field monitoring identified the possibility that in certain vehicles, a park pawl malfunction could be associated with a potential weld failure. Therefore, MBAG conducted further investigation and analysis to determine whether such a park pawl malfunction might occur, potential safety consequences, and which vehicles might be affected.

On May 3, 2024, MBAG determined that the potential parking pawl malfunction constitutes a non-compliance with FMVSS 114, requiring a recall.

MBAG is currently aware of 5 warranty claims/field reports/service reports received on September 9, 2022, September 13, 2022, October 10, 2022, October 20, 2022, and November 10, 2022. MBAG is not aware of any reports of property damage, fatalities, crashes, or injury related to this FMVSS non-compliance.

 


2 Affected Products

Vehicles

MAKE MODEL YEAR
MERCEDES-BENZ EQB300 2022
MERCEDES-BENZ EQB350 2022

 


3 Associated Documents

Noncompliance Notice 573 Report

RCLRPT-24V331-7524.PDF 215.689KB

 


Recall Acknowledgement

RCAK-24V331-3083.pdf 645.321KB

 


Noncompliance Notice 573 Report

RCLRPT-24V331-9161.PDF 215.689KB

 


Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=24V331&docType=RCL

 


 

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Last update on 2024-07-16 / Affiliate links / Images from Amazon Product Advertising API

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