2010 Mercedes
Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
Vehicle: Customer Interest
Instruments - Tachometer Fluctuates By Approx. 100rpm
Instrument cluster: Tachometer fluctuates
Topic number LI54.30-P-049068
Version 1
Design group 54.30 Instrument cluster/display instruments/warning devices
Date 03-11-2010
Validity Model 204 with comfort multifunction steering wheel (code 442) up to
VIN ...A 324554 / ...F 383728 / ...R 091855
Model 207 up to VIN ...F 014219 Model 212 up to VIN ...A 079696
Reason for change
Reason for block
Complaint:
Tachometer in instrument cluster (A1) fluctuates by approx. 100 rpm.
Note:
The complaint is observable primarily when idling.
Cause:
Dirt in the tachometer stepper motor in the instrument cluster (A1)
Remedy:
Check the engine speed on cold start and in warm-up with Xentry Diagnostics
under Motor electronics (ME) control unit -> Actual values ->
Combustion engine. If the engine speed in the actual values is constant and
the tachometer in the instrument cluster (A1) fluctuates,
remove/install/replace instrument cluster as per EPC (A1).
Symptoms
Work units
WIS-References
Validity
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Saturday, February 13, 2016
Instruments - Tachometer Fluctuates By Approx. 100rpm Mercedes Benz C 63 AMG Sedan (204.077) V8-6.3L (156.985)
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