Mercedes Benz S 550 4MATIC Technical Problem #LI83-00_P-045035 Date: 090518
A/C - A/C Or A/C Off Indicator Flashes/A/C Inoperative
AC or AC Off Indicator Lamp Flashes After Actuation / Air Conditioning Not Functioning (P-B-83.00/70d, April 16, 2009)
Topic number LI83.00-P-045035
Version 1
Design group 83.00 General
Date 05-18-2009
Validity All Model 171, 203, 209, 211, 216, 219 and 221 Vehicles
Reason for change
Complaint:
AC or AC Off Indicator Lamp Flashes After Actuation / Air Conditioning Not Functioning
Cause:
Coding of the climate system control module.
Remedy:
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 52
1. Process any fault codes in the climate system and repair as necessary.
2. Confirm refrigerant level by performing a Refrigerant Circuit Test as per SDS and following instructions for corrective actions.
3. Only after steps 1 and 2 are completed, use Star Diagnosis to deactivate the fill level control as per the instructions listed below.
Model 203:
Control unit groups -> Body -> EZS - Electronic ignition switch -> Control unit adaptations -> Read coding and change if necessary ->
Climate control -> Standard setting: Climate control -> Refrigerant level check -> Set to Inactive
Model 216/221:
Main groups -> Control units -> Air conditioning -> AAC - Automatic air conditioning (Interior CAC bus) -> Read coding and change if
necessary -> Control unit adaptations -> Workshop coding -> Refrigerant level check -> Set to Deactivated
Model 171, 211 and 219:
If the fluid level control is still active, there will be a menu item in 'Main groups' labeled 'Check for necessary coding measures' (Figure 1).
Process this menu item to deactivate the coding of the fluid level controls (Figure 2 and 3). If the fluid level control is already inactive, this
additional menu item will not appear when Main groups is selected (Figure 4).
Note:
If the fluid level control has already been deactivated and the vehicle has the symptoms described, there is a fault that has not been
corrected and further diagnosis is necessary. Refer to applicable diagnostic trees in the Vehicle Heating, Ventilation, Air Conditioning
(HVAC) Manual found on STAR TekInfo -> EDAC -> Non EDAC Guides.
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 53
Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been
generated on April 16, 2009. Please refer to Netstar -> Star TekInfo -> Star Time for the most current labor time allowance.
Attachments
Symptoms
Work units
A/C - A/C Or A/C Off Indicator Flashes/A/C Inoperative
AC or AC Off Indicator Lamp Flashes After Actuation / Air Conditioning Not Functioning (P-B-83.00/70d, April 16, 2009)
Topic number LI83.00-P-045035
Version 1
Design group 83.00 General
Date 05-18-2009
Validity All Model 171, 203, 209, 211, 216, 219 and 221 Vehicles
Reason for change
Complaint:
AC or AC Off Indicator Lamp Flashes After Actuation / Air Conditioning Not Functioning
Cause:
Coding of the climate system control module.
Remedy:
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 52
1. Process any fault codes in the climate system and repair as necessary.
2. Confirm refrigerant level by performing a Refrigerant Circuit Test as per SDS and following instructions for corrective actions.
3. Only after steps 1 and 2 are completed, use Star Diagnosis to deactivate the fill level control as per the instructions listed below.
Model 203:
Control unit groups -> Body -> EZS - Electronic ignition switch -> Control unit adaptations -> Read coding and change if necessary ->
Climate control -> Standard setting: Climate control -> Refrigerant level check -> Set to Inactive
Model 216/221:
Main groups -> Control units -> Air conditioning -> AAC - Automatic air conditioning (Interior CAC bus) -> Read coding and change if
necessary -> Control unit adaptations -> Workshop coding -> Refrigerant level check -> Set to Deactivated
Model 171, 211 and 219:
If the fluid level control is still active, there will be a menu item in 'Main groups' labeled 'Check for necessary coding measures' (Figure 1).
Process this menu item to deactivate the coding of the fluid level controls (Figure 2 and 3). If the fluid level control is already inactive, this
additional menu item will not appear when Main groups is selected (Figure 4).
Note:
If the fluid level control has already been deactivated and the vehicle has the symptoms described, there is a fault that has not been
corrected and further diagnosis is necessary. Refer to applicable diagnostic trees in the Vehicle Heating, Ventilation, Air Conditioning
(HVAC) Manual found on STAR TekInfo -> EDAC -> Non EDAC Guides.
2010 Mercedes Benz S 550 4MATIC (221.186) V8-5.5L (273.968) Page 53
Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been
generated on April 16, 2009. Please refer to Netstar -> Star TekInfo -> Star Time for the most current labor time allowance.
Attachments
Symptoms
Work units
