mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

All Other Service Bulletins for Control Assembly: > < A/C - Won't Produce Cold/Warm Air
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Control Assembly: Customer Interest
A/C - Won't Produce Cold/Warm Air

Date: February 3, 2004

Order No.: T-B-83.40/66a

Supersedes: T-B-83.40/66 dated April 8, 2003

Group: 83

Revision: Procedure Updated

SUBJECT:
Model 163.154/157/172/174/175, as of A289565

Air Conditioning System Does Not Produce Cold/Warm Air

If you receive customer reports in the above model vehicles where the air conditioning system does not produce cold/warm air after vehicle starting,
install part no. stated below as described in WIS document no. AR83.40-P-6500GH. This condition is due to a momentary under voltage to AAC control
module (N22), which causes the air flaps to temporarily lose function. This occurs only on AAC control module (N22) part numbers A163 820
25/28/42/43 89.

Parts Information

In Case of Warranty

All Other Service Bulletins for Control Assembly: > < A/C - Won't Produce Cold/Warm Air