AC Compressor Not Engaging
When AC is turned on, the compressor clutch does not engage and the compressor does not spin. The AC system is completely non-functional.
Possible Causes
Empty Refrigerant (Auto Protection)
High likelihoodThe pressure sensor prevents compressor engagement when refrigerant is too low to protect the compressor from damage.
Electrical Fault
Medium likelihoodA blown fuse, faulty relay, or damaged wire preventing power from reaching the clutch.
Failed Compressor Clutch
Medium likelihoodClutch coil burned out or clutch mechanically failed.
How to Diagnose?
- 1 Check refrigerant level
- 2 Inspect AC fuse and relay
- 3 Measure voltage at compressor clutch
- 4 Test pressure sensor
- 5 Check clutch coil resistance
Repair Cost
Depends on cause and vehicle type
| Service | Price | Notes |
|---|---|---|
| Estimated Repair Cost | 50–2000SAR | Depends on cause and vehicle type |
* Prices are estimates and may vary depending on vehicle type and condition. Contact us for an accurate quote.
Frequently Asked Questions
Compressor not engaging, do I need to replace it?
Not necessarily. In many cases the cause is low refrigerant or a simple electrical fault. Accurate diagnosis determines if the compressor itself is faulty.
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