C 320 Wagon (203.264) V6-3.2L (112.946) (2004)
Fluid - A/T: All Technical Service Bulletins
A/T - Harsh Engagement/Droning/Buzzing Noise
Date: March 6, 2008
Order No.: P-B-27.55/50g
Supercedes: P-B-27.55/50f dated March 24, 2006
Group: 27
Revision History
Revision
Date
Purpose
g
3/6/08
Note Added pertaining to Warranty Information
f
3/24/06
"Perform Repair Based on Test Results" - Procedure Updated/Warranty Info. Updated
e
3/6/06
"Perform Repair Based on Test Results" - Procedure Updated
d
8/29/05
Warranty Information Updated
c
8/18/05
"Perform Repair Based on Test Results" - Step 2 Revised/Warranty Info. Updated
b
4/6/05
Addition of Note After Step 3 Pertaining to AMG Model Vehicles
a
2/17/05
Additional Applicable Models, Parts and Warranty Information Updated
-
01/27/05
Initial issue
SUBJECT:
Model 203.040/061/064/065/081/084/261/264/281/284/740/747/764
Model 209.365/375/376/465/475
Model 211.065/070/076/083/265/283
Up to Production Date 09/2003
Harsh Engagement Possibly Followed by Droning/Buzzing Noises During Light Acceleration Between Engine Speed of 1200 - 2500 RPM
If you receive customer reports in the above model vehicles of humming/buzzing noises or noticeable harsh engagement during gentle acceleration
between engine speed of 1200 - 2500 rpm; this may be caused by incomplete adaptation of the torque converter, the transmission (EGS) ECU software
or glycol contamination of the automatic transmission fluid. Follow the below repair procedures to resolve.
Note:
The condition is not intermittent and can be reproduced at all times.
Note:
The Glycol test must be performed only if:
a. the vehicle was produced before 09/2003,
b. the radiator is manufactured by "Valeo", refer to Figure 1 for identification,