Replace Lighting Control Unit – 2020 Mercedes-Benz GLE-Class

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February 5, 2021 NHTSA CAMPAIGN NUMBER: 21V056000

Reverse Light Remains Illuminated/FMVSS 108

If the reverse light remains illuminated in a gear other than reverse, it may cause confusion about the driver’s intention to other motorists, and increase the risk of a crash.

 

NHTSA Campaign Number: 21V056

Manufacturer Mercedes-Benz USA, LLC

Components EXTERIOR LIGHTING

Potential Number of Units Affected 8,186

 

Summary

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020 GLE350 and GLE450 vehicles. The lighting control unit may malfunction and cause the left exterior reverse light to remain illuminated after the transmission is shifted into a different gear. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, “Lamps, Reflective Devices, and Associated Equipment.”

 

Remedy

MBUSA will notify owners, and dealers will replace the lighting control unit, free of charge. Owner notification letters were mailed June 10, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA’s number for this recall is 2022050004.

 

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.safercar.gov.

 

Check if your Mercedes-Benz has a Recall

 


2020 Mercedes-Benz GLE-Class
2020 Mercedes-Benz GLE-Class

 


This is to notify you of a new Recall Campaign to replace the lighting control unit on 8,199 Model Year MY2020 167 (GLE-Class) vehicles.  The recall campaign will be visible on the www.safercar.gov website and may generate questions from customers. Affected VINs will be flagged in VMI as “PENDING” on June 24, 2022.

 

Issue

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2020 GLE-Class vehicles (167 platform), the lighting control unit may not meet current production specifications. In this case, the left exterior backup lamp may remain illuminated even though the reverse gear of the vehicle’s transmission is no longer selected, a condition which may fail to conform to the requirements of Federal Motor Vehicle Safety Standard (“FMVSS”) No. 108 S7.6.5.  Further, this condition may confuse or reduce the ability to warn other motorists of the driver’s intention to operate the vehicle in reverse, increasing the risk of a crash.  All other external lamps including right exterior backup lamp operate as intended.

 

What We’re Doing

MBUSA will conduct a voluntary recall. An authorized Mercedes-Benz dealer will replace the respective control unit on the affected vehicles.

 

Parts

The remedy is available and can be performed. Please note that the estimated replacement rate is less than 1%. Parts should only be ordered in the event a replacement is required.

 


Update software of signal acquisition and actuation module and check

  • Ensure use of XENTRY Diagnosis version 12/2021 or higher.
  • Before starting the work procedure, install all the add-ons that are updated daily in XENTRY Diagnosis.
  • Make sure to follow the operation steps exactly as described in XENTRY Diagnosis.
  • Use a battery charger to ensure sufficient power supply of the vehicle on-board electrical system battery (greater than 12.5 V).
  • If XENTRY Diagnosis is already connected to the vehicle, start with operation step 2.

If two or more software updates or SCN codings are performed during one workshop  visit, the operation items 02-4762 and 02-5058 may only be invoiced once for each workshop order.

 

Work Procedure 

  1. Connect XENTRY Diagnosis.

 

  1. Update software of signal acquisition and actuation module.

The software with the part number A1679027813 must be updated.

To do this, select menu item “Quick test view – N10/8 rear signal acquisition and actuation module (rear Sam) – Adaptations – Control unit update – Updating of control unit software”.  Then follow the user guidance in XENTRY Diagnosis.

 

  1. Disconnect ground line of battery (AR54.10-P-0003ME).

 

  1. Remove service flap in right rear trunk.

 

  1. Remove insulation (A, figure 1) and unscrew screw (B, figure 2).

 

  1. Release fuse and relay module and set down with connected lines through service flap in trunk (figure 3).

 

  1. Move/wiggle Heck L plug (2, figure 3 and figure 4) as well as disconnect the contacts and connect the contacts again. Ground line of battery shall not be connected.

 

  1. Connect ground line of battery (AR54.10-P-0003ME).

 

  1. Switch on ignition, engage reverse gear then put shifter back into position P and check rear lamps.

9.1  In the case of a permanently lit up reversing light without engaged reverse gear, the rear signal acquisition and actuation module control unit must be replaced.

This occurs only in a few individual cases. For this reason, do not order any parts in advance.

 

  1. Perform quick test and clear fault memory.

 

  1. Assemble in reverse order.

 

Primary Parts Information 

Qty. Part Name Part Number
As required Rear signal acquisition and actuation module control unit *

* The replacement parts must be determined according to the equipment variant for the vehicle identification number via the parts process in the Xentry Portal.

 


Mercedes-Benz Part 573 Submission
Original Submitted to Portal February 5, 2021
Chronology-Only section
Supplement to Original Submission

 

Chronology of Defect/Noncompliance Determination

In June 2019, MBAG became aware, during a regular quality inspection in the production process, of a single vehicle which exhibited a permanently illuminated left exterior backup lamp. Subsequently, MBAG initiated an investigation in conjunction with the supplier.

 

MBAG’s supplier found that on the subject control unit, the contact pins for the left exterior backup lamp had been manufactured at the tolerance limit. Accordingly, the supplier redefined their tolerance limits and initiated an  optimization of the pin assembly. At this point in time, this case was judged to be an isolated case.

 

In late autumn 2019, MBAG was made aware of a small number of customer complaints where it was reported that the left rear backup lamp remains illuminated.

 

The vehicles had low vehicle mileage at the time of the report and the investigation was focused on understanding whether these isolated reports were potentially related.

 

MBAG also initiated an investigation of vehicles located at the all production facilities and Vehicle Preparation Centers and in the winter of 2019, and any vehicles found to have an affected backup lamp were reworked.

 

In late summer of 2020 MBAG was made aware of further customer complaints of the left side reverse lamp remaining illuminated. Further investigations were initiated in order to identify the failure mechanism, the affected vehicle population, the location of the vehicles, and if the vehicles were not reworked within the above mentioned plant measure.  The investigation found the vehicles were not reworked within the above mentioned plant measure.  The technical investigation found that even with one illuminated backup lamp, the vehicles’ brake lamps and turn signal functions were not affected so that following motorists would be able to detect the operator’s intention to turn or slow/stop the vehicle.

 

In autumn 2020 MBAG additionally reviewed the relevant regulatory requirements to determine whether or not the vehicles fullfilled the requirements despite the proper operation of the other rear exterior lamps.

 

On January 29, 2021, MBAG determined that there was a technical noncompliance regarding the market-specific regulatory requirements.

 


2 Affected Products

Vehicles

MAKE MODEL YEAR
MERCEDES-BENZ GLE350 2020
MERCEDES-BENZ GLE450 2020

 


12 Associated Documents

Recall 573 Report – Amendment 2

RCLRPT-21V056-2365.PDF 215.295KB

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ISSUED Interim Owner Notification Letter(Part 577)

RIONL-21V056-2571.pdf 170.078KB

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Chronology

RMISC-21V056-9892.pdf 67.434KB

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Manufacturer Notices(to Dealers,etc) – Recall Campaign Initial Notification Replace Lighting Control Unit MY20 167 (GLE-Class)

RCMN-21V056-1022.pdf 103.089KB

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Recall Acknowledgement

RCAK-21V056-2747.pdf 645.813KB

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Recall 573 Report – Amendment 1

RCLRPT-21V056-2636.PDF 215.287KB

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Noncompliance Notice 573 Report

RCLRPT-21V056-4345.PDF 215.286KB

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Recall 573 Report – AMENDMENT 4

RCLRPT-21V056-6383.PDF 215.37KB

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Recall 573 Report – AMENDMENT 3

RCLRPT-21V056-2323.PDF 215.334KB

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Recall 573 Report-Amendment 5-03/15/2022

RCLRPT-21V056-7566.PDF 215.367KB

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Recall 573 Report – 5/10/22

RCLRPT-21V056-2225.PDF 215.365KB

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Remedy Instructions and TSB

RCRIT-21V056-4048.pdf 636.956KB

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Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V056&docType=RCL

 


 

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