83.00_70d PDF

A service bulletin that addresses issues with the air conditioning system in certain Mercedes-Benz models. It provides instructions for troubleshooting and diagnosing AC control module faults that lead to indicator lamp flashing. The document includes detailed steps to deactivate the control module’s fill level and perform a refrigerant circuit test. Images provide visual guidance on the necessary coding measures within the vehicle's system. Specific models like Model 171, 203, 209, 211, 216, 219, and 221 are discussed, with guidance on warranty operations and time allowances.