Instructions for desiccant insert replacement (530i 2017-2022, 530i xDrive 2017-2022, 530e PHEV 2018-2022, 530e xDrive PHEV 2018-2022, 540i 2017-2022, 540i xDrive 2017-2022, M550i xDrive 2018-2022)

Required special tools: 

• 32 1 270

A desiccant insert need not  be changed at regular inspection intervals in a well functioning, sealed air conditioning system.

However, the dryer flask or desiccant insert must absolutely be replaced in the event of: 

• The refrigerant being dirty by swarfs (e.g. when the compressor is clamped).
• With depressurized and/or completely drained refrigerant circuit.
• In case of a refrigerant circuit which was closed using special tool 32 1 270 but remains open for more than 24 hours.

The desiccant insert cannot be replaced in the following vehicles: 

• -Series E8x, 3-Series E9x  from 12/2008
• E84, E89 
• F-series 
• G model series 
• BMW i without heat pump 

In these vehicles, the condenser for the heating and air conditioning system must be replaced.

• BMW i01 with heat pump 

On this vehicle the low pressure battery must be replaced.