Campaign - Climate Control Module Replacement
FILE:SERVICE: GROUP 00 OF SERVICE INFORMATION BINDER
PARTS: GROUP I OF INFORMATION_PARTS & ACCESSORIES BINDER
CAMPAIGN NO.: 2005060007
JULY 2005
TO: ALL MERCEDES-BENZ CENTERS
SUBJECT:
MODEL 171, MODEL YEAR 2005
REPLACE CLIMATE CONTROL MODULE
This Service Campaign has been initiated because DCAG has determined that on the affected vehicles (see VIN range below) the climate control unit may not function properly and cause the A/C compressor to shut down under certain operating conditions.
Please review the Effective Serial Number chart shown and if necessary repair the subject vehicles during the vehicle's next service.
Prior to performing this Service Campaign:
^ Please check VMI to insure the vehicle is involved and to determine if the vehicle has been previously repaired.
^ Please review the entire Service Campaign bulletin.
Approximately 1,156 vehicles are affected.
PROCEDURE
1. Connect battery charger:
Remove fasteners (3, Figure 1) from air duct and remove air duct. Connect battery charger to battery (observe proper polarity).
Note:
Ensure ignition is switched OFF prior to connection of battery charger.
2. Connect STAR DIAGNOSIS and transfer the settings of the climate control module (N18), to STAR DIAGNOSIS by navigating through the following screen menus:
Main groups/Control units/Air conditioning/C-AAC-Convenience automatic air conditioning - AAC automatic air conditioning - HEAT/Initial start-up/Initial start-up with automatic takeover of settings of previous control unit (follow on-screen instructions to save data to Star Diagnosis)/Read coding and transfer to new control unit (if coding has been transferred screen display will read: "Coding has been read"), Switch ignition OFF.
3. Disconnect negative battery cable (refer to WIS: AR54.10-P-0003V).
4. Remove ashtray WIS: AR68.20-P-2420V.
Note (applies to WIS document: AR68.20-P-2350V that is linked to above WIS instructions):
^ Do not remove shift knob when removing center console.
^ Do not perform steps 6 and 7 (in WIS: AR68.20-P-2350V).
5. Pull the climate control module (N18) out of the recesses (arrow, Figure 2) on the upper control panel control module (N72/1). Then tilt the climate control module (N18) downward until the electrical connectors (1) are accessible.
6. Disconnect electrical connectors (1, Figure 2) and remove climate control module (N18).
7. Installation of new climate control module is in reverse order.
Note:
Ensure new climate control module (N18, Figure 2) is properly seated into the recesses (arrow) on the upper control panel control module.
8. Reconnect negative battery cable.
9. Connect battery charger.
10. Transfer settings (saved to Star Diagnosis) to new climate control module (N18): Read coding and transfer to new control unit (switch ignition ON)/Normalizing Positioning Motors/Initial start-up with automatic takeover of settings of previous control unit; Question: Do you want to break in new AC compressor? Select: NO.
Note:
When the transfer of the control module settings is complete, the following screen will be displayed:
"Initial start-up was fully completed".
11. Reinstall air duct covering battery in reverse order.
12. Reinitialize electrical systems (refer to WIS: AR00.19-P-0200V).
Parts Information
Warranty Information
Note:
Only one Climate Control Unit is replaced under this campaign. The Automatic A/C (AAC) Climate Control Unit is Code 580. The Convenience A/C (C-AAC) Climate Control Unit is Code 581.
Note:
Please be aware that only the part number(s) referenced in the Campaign Bulletin is/are approved for use to repair the vehicle. Repairs performed using any other part(s) will not have been performed in accordance with the campaign. Accordingly, warranty claims submitted with reference to an improper part number(s) will be denied.
The allowable labor operation should be used when submitting a warranty claim for this repair.