What this usually means
Weak BMW G30 aircon is often refrigerant leak, condenser, cabin filter, or compressor control. Start with leak dye and pressure readings before compressor replacement. A compressor quote without leak test proof is a red flag.
What to ask the workshop before approving repair
- • Show the diagnostic fault codes.
- • Show photo/video proof of the failed part.
- • Give an itemised quote for parts and labour.
- • Explain why cheaper common fixes were ruled out.
This is not a final diagnosis. It is a money-saving checklist before you go workshop.