Suction the air conditioning

See SUCTION, EVACUATING AND FILLING HEATING AND AIR CONDITIONING SYSTEM (R134A) or SUCTION, EVACUATING AND FILLING AIR CONDITIONING (R1234YF) .

Courtesy of BMW OF NORTH AMERICA, INC.

Precondition

PHEV, hybrid: The engine is switched off.

CAUTION: Refrigerant circuit under high pressure.
Injury hazard!

Note and follow safety instructions on containers.
Avoid contact with refrigerant; wear safety goggles and hand protection.

NOTE: TECHNICAL INFORMATION
If the A/C service station for the R1234yf refrigerant identifies contaminated refrigerant in the refrigerant circuit of the vehicle before the suction process, a special procedure to draw off and dispose of this refrigerant must be followed .

Courtesy of BMW OF NORTH AMERICA, INC.

Turn on driving readiness.
Switch on the air conditioning and let it run for a few minutes.
Turn off driving readiness.
Carry out the service function:
- Body
- Heating and air conditioning functions
- Drain/fill up refrigerant circuit
Remove the sealing caps from the refrigerant filler necks.
Connect the high pressure line of the A/C service station with the vehicle's high-pressure connection (red).
Connect the low-pressure line of the A/C service station with the vehicle's low-pressure connection (blue).
Start the suction process on the A/C service station.
Let the blower of the heating and air-conditioning unit run at average blower speed during the suction process.
Note the amount of refrigerant drawn off and the amount of refrigerant oil drawn off at the end of the suction process.
Keep the sheet with the recorded quantities as the values are once again required when filling.
Disconnect the high pressure line and the low pressure line.
Drain the high pressure line and the low pressure line.
Close the sealing cap of the coolant filler neck.
Correctly dispose of the drained refrigerant oil.