ML 63 AMG (164.177) V8-6.3L (156.980) (2007)
Positive Crankcase Ventilation Valve: All Technical Service Bulletins
Emissions - Whistling Noise From Engine Compartment
Date: May 1, 2009
Order No.: S-B-01.20/24a
Supersedes: S-B-01.20/24 dated February 12, 2009
Group: 01
Revision History
Revision
Date
Purpose
a
5/1/09
Warranty Information Updated
-
2/12/09
Initial issue
SUBJECT
Whistling Sound from Engine Compartment
If you receive customer reports in the above model vehicles of a whistling sound from the engine compartment (in the area of the firewall/bulkhead), the
cause may be a malfunctioning diaphragm in the pressure regulating valve. To resolve, replace the pressure regulating valve.
Note:
The sound can also be heard for up to several seconds after the engine is switched off. The sound goes away when the engine dipstick is removed (only
remove the dipstick for a short time to check).
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 May
1, 2009. Please refer to Netstar --> Star TekInfo --> Star Time for the most current labor time allowance.