Engine - Hum/Vibration At 1200-1600 RPM

Date: January 21, 2009

Order No.: P-B-22.10/01d

Supersedes: P-B-22.10/01c dated October 23, 2008

Group: 22

Revision History

Revision Date Purpose

d 1/21/09 Damage Code Revised

c 10/23/08 Damage Code Revised

b 4/4/08 Warranty Information Updated

a 8/21/07 VIN Cut-off and WIS Document Reference Added

- 4/18/07 Initial issue

SUBJECT:
Model 221.186 (S Class 4-Matic), Up to VIN A127497

Engine Humming / Vibrations between 1200 to 1600 RPM

If you receive customer reports in the above model vehicles of humming/vibrations in the engine rpm range from 1200 to 1600 (clearly felt in the steering wheel and footwell floor), install optimized engine mounts which may resolve the humming / vibration condition.

Note:
Insure that the engine mounts are seated flat on the engine support.





Parts Information

Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been generated on January 21, 2009. Please refer to Netstar --> Star TekInfo --> Star Time for the most current labor time allowance.





In Case of Warranty, use the table above