BMW X3 Service & Repair Manual: Replacing safety pressure switch

WARNING: Danger of injury! Refrigerant circuit is under high pressure! Follow safety informations for handling R 134a refrigerant . Avoid contact with refrigerant and refrigerant fluid. Follow safety instructions for HANDLING REFRIGERANT OIL .

IMPORTANT: Risk of damage! Restart engine only when A/C system has been correctly filled.

Follow INSTRUCTIONS for opening and replacing parts in refrigerant circuit.

If air conditioning system is open for longer than 24 hours: replace DESICCANT INSERT FOR AIR CONDITIONING

Necessary preliminary tasks:

  • DRAIN OFF AIR CONDITIONING SYSTEM

Unclip wiring harness (1).

Pull expansion tank (2) upward out of retaining bracket.

HVAC

Unfasten plug connection (1) and disconnect.

Installation note: Guide pin (2) must be fit correctly in rubber guide (3).

HVAC

Unfasten plug connection (1) and disconnect.

Release safety pressure switch (2) and remove.

HVAC

After installation:

  • EVACUATE AND FILL A/C SYSTEM
    Replacing desiccant insert for air conditioning system
    WARNING: Danger of injury! Refrigerant circuit is under high pressure! Follow safety instructions for handling R 134a refrigerant . Avoid cont ...

    Heating and air conditioning
    ...

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