Mercedes Benz

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 2000 Mercedes Benz Truck ML 55 AMG (163.174) V8-5.5L (113.981) 256 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