# Service bulletin LI01.00\-P\-078172

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: 11006541
- Published by NHTSA: 2024\-08\-21
- Manufacturer's number: LI01.00\-P\-078172
- Manufacturer's date: 2024\-08\-08
- NHTSA component: POWER TRAIN; ENGINE

## NHTSA's summary

Dull thumping noise or ticking noise under the vehicle in the area of the engine/two\-mass flywheel/transmission. Is significantly perceptible at the front right wheel well and can also be faintly heard in the vehicle interior. Cause The ticking noise occurs in idle operation in drive program C \& S at 780 rpm when the state of charge of the battery is over 65% and the load requirement at the belt\-driven starter alternator is simultaneously over 25 Nm. The load requirement can occur due to a number of auxiliary consumers \(e.g. air conditioning system, steering wheel or seat heating, etc.\). Remedy Switch off the auxiliary consumers and check whether the noise goes away. Remedial action by means of software update under development. Do not replace any parts Create TIPS case and send to HQ together with the following documents: • Videos of the problem from the exterior and in the vehicle interior • Control unit log, engine N3/10 \(ME\) • Control unit log, drivetrain N127 \(PTCU\) • Control unit log, DC/DC converter N83/12 \(DDW\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11006541-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11006541-9999.pdf)

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

## Components

Engine, Transmission and driveline

## Vehicles listed

- 2023 to 2024 MERCEDES\-BENZ AMG C43
- 2024 MERCEDES\-BENZ AMG GLC43
- 2023 to 2024 MERCEDES\-BENZ AMG SL43

JSON: [/v1/bulletins/11006541](/v1/bulletins/11006541)

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