Frequently Asked Questions
Q: Why A/C not cold?
A: It could be short of refrigerant, leakage, moisture in the system, fan motor failure, engine overheating or other issues.
Q: A/C not getting cold and blower motor noisy when driving long distances?
A: This could be due to low refrigerant in the A/C system/the expansion valve might be stuck open/the evaporator coil clogged/the thermistor sensor is not functioning properly causing the evaporator coil to freeze. Recharge the refrigerant to the correct amount/replace the expansion valve/replace the thermistor sensor. Or alternatively, you can adjust the A/C temperature control setting to mild or higher (25 degrees Celcius) to resolve the problem temporarily.
Q: A/C not cold when idle, but cold when driving?
A: Fan motor may not running, low coolant level, engine overheating, weak A/C compressor, or other issues.
Q: How to know if my A/C refrigerant/oil is okay?
A: Look for the A/C sight glass(Some models may not have sight glass)
Q: Water leaking under the dashboard?
A: Drain hose may be clogged or sealant between cover aging. Clean drain hose with a compressed air gun or clean the evaporator together if necessary. Use a dehumidifier to remove excessive moisture inside the cabin.
Q: Can't feel the air coming out from the air vent?
A: This could be the cabin air filter, blower motor, or evaporator coil clogged. Replace a new cabin air filter, clean the blower motor and evaporator coil.
Q: A/C not cold after parking for a while?
A: If the A/C is back to normal after a few minutes of driving, this could be a magnetic clutch coil failure, fan motor, or other issues.
Q: No air coming out from the air vent?
A: This could be a fuse, relay, panel control switch, blower motor, or blower resistor failure.
Q: Driver side cold, passenger side hot?
A: This could be insufficient refrigerant amount, servo motor failure, or other issues.
Q: A/C not cold after refilling the refrigerant?
A: This could be a serious leak from the A/C system. Please do not turn on the A/C at the moment as it may damage the A/C compressor due to low refrigerant and compressor oil.
Q: Compressor noisy when turned on?
A: This could be a fan belt/pulley bearing/low compressor oil or compressor internal part damaged. Check for fan belt, pulley, and bearing condition, if okay then charge refrigerant and compressor oil, operate A/C, and observe for a few minutes, and if noise is present again, replace a new compressor.
Q: How to take care of my car A/C?
1. Replace the cabin air filter every 10,000 km or every year whichever comes first.
2. Check the radiator coolant level, and clean the A/C condenser once a week or every fortnight, by spraying water at the A/C condenser with low-medium pressure to remove dirt, and debris to maintain cleanliness and better airflow. Always use coolant for the radiator.
3. Clean the evaporator coil once a year, the evaporator coil will collect dust and dirt over time and will develop bacteria/viruses/molds/unpleasant odour which may cause allergies.
4. Replace A/C component (receiver drier) every 20,000 km~30,000 km or service A/C once a year.