Showing posts with label Instruments - Tachometer Fluctuates By Approx. 100rpm. Show all posts
Showing posts with label Instruments - Tachometer Fluctuates By Approx. 100rpm. Show all posts

Friday, May 24, 2019

Mercedes-Benz A220 2020 Technical Service Bulletin # LI54-30_P-049068 Date: 100311


Instruments - Tachometer Fluctuates By Approx. 100rpm



Instrument cluster: Tachometer fluctuates



Topic number LI54.30-P-049068



Mercedes-Benz A220 2020 Page 387



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



Mercedes-Benz A220 2020 Page 388



Mercedes-Benz A220 2020 Page 389

Wednesday, September 20, 2017

Mercedes Benz E 63 AMG Sedan Instruments - Tachometer Fluctuates By Approx. 100rpm

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2010 Mercedes Benz E 63 AMG Sedan (212.077) V8-6.3L (156.985) Copyright ? 2013, ALLDATA 10.52SS Page 1
Vehicle: All Technical Service Bulletins
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
2010 Mercedes Benz E 63 AMG Sedan (212.077) V8-6.3L (156.985) Copyright ? 2013, ALLDATA 10.52SS Page 2
2010 Mercedes Benz E 63 AMG Sedan (212.077) V8-6.3L (156.985) Copyright ? 2013, ALLDATA 10.52SS Page 3
Validity