Vehicles With An Electrically-Driven A/C Compressor

• The engine may only be started if the refrigerant circuit is completely assembled.
• Hybrid drive on vehicles with battery cooling is only possible with a fully charged A/C system in which there are no stored errors. Refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function for the a/c system and the battery regulation.
• After the installation of the electrically-driven A/C compressor and the subsequent filling of the refrigerant circuit, start the A/C compressor for the first time using the "compressor intake" function for the basic setting. The A/C compressor may otherwise become damaged if refrigerant oil was improperly stored in the A/C compressor compression chamber before installation. Use the Vehicle Diagnostic Tester in the "Guided Fault Finding" Function for A/C System and Battery Regulator.
• Only activate the electrically-driven A/C compressor when the refrigerant circuit is filled. The A/C compressor may become damaged if the A/C compressor is run while the refrigerant circuit is empty. Use the Vehicle Diagnostic Tester in the "Guided Fault Finding" function for A/C system and battery regulation.

-- Charge the vehicle battery, for example, using the Battery Charger :VAS5904  in the battery support mode to minimize the number of automatic starts during the test- and measuring procedures while the ready mode is active. Refer to BATTERY, CHARGING and appropriate system information. .

-- For testing and measurement procedures that require the ready mode to be active or the ignition to be switched on, the selector lever must be in the "P" position and the parking brake must be activated. The required tools must be placed so that they do not come into contact with any rotating components in the engine and they must also not go into the vicinity of the rotating components when the engine is running.