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Singapore car repair guide

Mercedes C-Class: Aircon sometimes cold, sometimes warm

If you are seeing this symptom in Singapore, use this as a pre-workshop checklist. The goal is to identify the likely root cause, avoid replacing the wrong part, and know the fair repair range before approving work.

Fair SG range
$150–$800
Red-flag quote
$1,600+
Likely fix
Leak test, condenser fan/expansion valve diagnosis, refrigerant service

What this usually means

Intermittent cooling is commonly refrigerant leak, condenser fan, expansion valve or temperature sensor before compressor failure. Ask for pressure readings and leak-test proof before approving compressor replacement.

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.
  • • Use/confirm: Star Diagnostic XENTRY
  • • Use/confirm: Aircon pressure gauge

This is not a final diagnosis. It is a money-saving checklist before you go workshop.

Other problems on this Mercedes C-Class (2007-2014)

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