Model 205 C63 Vehicles, Engine Sound Changes After Software Update (LI07.08-P-065149)

Publication date: 2016-11-07
Reference number: LI07.08-P-065149

MODEL 205 C63 VEHICLES, ENGINE SOUND CHANGES AFTER SOFTWARE UPDATE

TECHNICAL SERVICE BULLETIN

Reference Number(s): LI07.08-P-065149 Version 1, Date of Issue: November 07, 2016

MERCEDES-BENZ:	Model series 205 with M177
DESIGN GROUP:	07.08 Governor
REASON FOR CHANGE:	Updated data status available

COMPLAINT

Engine sound change on AMG C 63 vehicles (model 205 with M177 engines) after recent software updates.

CAUSE

Current production AMG engines undergo constant development in regards to performance optimization. In the recent updates to engine and transmission in the C63 vehicles the objective was to optimize the vehicle drive off agility in S+ mode from stand still. These software updates unintentionally led to changes in the engine sound.

REMEDY

To correct the engine sound after the recent software update situation and resolve customer complaint, update the engine ME again as follows:

DVD 07/2016 with add-on 6527

DVD 09/2016 with add-on 6529

Following the engine software update, the transmission control unit will be updated also.