# Service bulletin LI35.31\-P\-079734

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11023101
- Published by NHTSA: 2025\-09\-11
- Manufacturer's number: LI35.31\-P\-079734
- Manufacturer's date: 2025\-09\-10
- NHTSA component: POWER TRAIN

## NHTSA's summary

Complaint 1. Howling noises from the area of the rear axle 2. Oil discoloration is present during oil change \(water in oil\) 3. Oil leakage from the breather cap Cause The bleed line of rear differential may be misaligned, causing the rubber end pieced to rest on the wheel well liner. When driving in the rain, water enters through the rubber elbow from the soaked wheel well liner. Remedy Perform a road test and determine the location of the noise using NVH equipment. If the rear axle differential is the root cause of the noise, continue with the following: 1. Drain oil from rear axle differential and check for signs of water intrusion \(discoloration/cloudiness\) Remedy A: If no water is found 2. Remove/install left wheel well trim. 3. Remove rubber end piece from the bleed line. 4. Install modified end piece with the part number A 167 351 50 00. 5. Identify source of the noise and, if necessary, replace the parts causing the concern. Remedy B: If water is found 2. Remove/install left wheel well trim. 3. Remove rubber end piece from the bleed line. 4. Install modified end piece with the part number A 167 351 50 00. 5. Replace rear axle differential

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11023101-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11023101-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 2016 to 2019 MERCEDES\-BENZ AMG GLE43
- 2021 to 2022 MERCEDES\-BENZ AMG GLE53
- 2023 to 2024 MERCEDES\-BENZ AMG GLE53 4MATIC\+
- 2016 to 2019 MERCEDES\-BENZ AMG GLE63
- 2021 to 2024 MERCEDES\-BENZ AMG GLE63
- 2021 to 2022 MERCEDES\-BENZ AMG GLE63 S
- 2023 to 2024 MERCEDES\-BENZ AMG GLE63 S 4MATIC\+
- 2018 MERCEDES\-BENZ AMG GLE63S
- 2020 to 2022 MERCEDES\-BENZ AMG GLS63
- 2023 to 2024 MERCEDES\-BENZ AMG GLS63 4MATIC\+
- 2020 to 2023 MERCEDES\-BENZ GLE 350
- 2024 MERCEDES\-BENZ GLE 350 4MATIC
- 2020 to 2024 MERCEDES\-BENZ GLE 450
- 2024 MERCEDES\-BENZ GLE 450E 4MATIC
- 2020 to 2021 MERCEDES\-BENZ GLE 580
- 2022 to 2024 MERCEDES\-BENZ GLE 580 4MATIC
- 2016 to 2017 MERCEDES\-BENZ GLE63S
- 2020 MERCEDES\-BENZ GLS 450
- 2022 to 2024 MERCEDES\-BENZ GLS 450 4MATIC
- 2020 MERCEDES\-BENZ GLS 580 4MATIC
- 2022 to 2024 MERCEDES\-BENZ GLS 580 4MATIC
- 2021 MERCEDES\-BENZ GLS450
- 2021 MERCEDES\-BENZ GLS580
- 2021 MERCEDES\-MAYBACH GLS 600
- 2022 to 2024 MERCEDES\-MAYBACH GLS 600 4MATIC

JSON: [/v1/bulletins/11023101](/v1/bulletins/11023101)

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