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Singapore car repair guide

BYD Sealion: Aircon weak / cabin takes long to cool

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
$80–$400
Red-flag quote
$1,200+
Likely fix
Cabin filter + refrigerant/thermal-management diagnostic

What this usually means

For EVs, aircon performance is tied to thermal management. Check cabin filter, refrigerant, compressor command, and software before replacing major parts. Ask the workshop to show scan data, not just a compressor quote.

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: EV-safe aircon service equipment
  • • Use/confirm: EV diagnostic scanner

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

Other problems on this BYD Sealion (2024-present)

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