Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
64 52 521 Replacing A/C System Compressor (N52K)
Risk of injury!
Refrigerant circuit is under high pressure!
Work on the cooling system may only be carried out when it has cooled down.
Follow safety instructions for handling R134a refrigerant . See 64 50... Instructions For Handling Refrigerant R134a and/or 64 50... Safety Instructions For Handling Refrigerant R134A .
Follow safety instructions for handling refrigerant oil . Refer to 64 50... Instructions For Handling Refrigerant Oil (For Refrigerant R134a) .
Avoid contact with refrigerant and refrigerant oil.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.