CLK 550 (209.372) V8-5.5L (273.967) (2008)
/v8-5.5l_(273.967)/Page-2721001.png)
Technical Service Bulletin # S-83_30-74P
Date: 090604
A/C - Musty/Moldy Odor Issues
Date: June 4, 2009
Order No.: S-B-83.30/74p
Supersedes: S-B-83.30/74o dated April 29, 2009
Group: 83
Revision History
SUBJECT:
All Model 164, 171, 203, 204, 209, 211, 215, 216, 219, 220, 221, 230 and 251 Vehicles
Air Conditioning Musty/Moldy Odor Complaints
Under certain environmental conditions, typically in a hot and humid climate, the vehicle may emit a musty/moldy odor from the air conditioning system.
This may be more noticeable when starting the vehicle due to residual condensation on the evaporator and on the interior surface of the heater box.
If you receive customer reports in the above model vehicles regarding a musty/moldy odor from the air conditioning system, the evaporator should be
cleaned using Mercedes-Benz Contra Sept and the interior using the "ultrasonic atomizer", refer to WIS document AR83.30-P-5556A. For the best
lasting results, follow the instructions provided below.
1. Remove all filters installed in the air conditioning system. The following filter may be fitted: Pollen filter, dust filer, combination filter or active
charcoal filter.
2. Clean evaporator with Mercedes-Benz Contra Sept as per WIS document AR83.30-P-5555T.
