Car Problem Guide · Sharjah, UAE
Car Overheating in Sharjah — Causes, Warning Signs & What to Do
Engine overheating is one of the most common and dangerous car problems in the UAE. The extreme Sharjah heat pushes cooling systems hard — and an overheating engine can cause catastrophic damage in minutes if ignored. JAS Auto Workshop in Sharjah diagnoses and repairs overheating faults for all car brands.
Common Causes
- Low coolant level due to a leak in the cooling system
- Failed thermostat stuck in the closed position
- Water pump failure — not circulating coolant
- Blocked or clogged radiator reducing cooling efficiency
- Radiator fan not operating (electric fan motor or fuse fault)
- Blown head gasket allowing combustion gases into coolant
- Cracked radiator hose causing sudden coolant loss
- Coolant contamination — old or wrong coolant reducing heat transfer
Warning Signs
- Temperature gauge climbing toward the red zone
- Red temperature warning light on the dashboard
- Steam coming from under the bonnet
- Burning smell from the engine bay
- Coolant warning light illuminated
- Heater suddenly blowing cold air (loss of coolant)
- Engine ticking or knocking when hot
What to Do Right Now
- 1. Pull over safely and turn off the engine immediately
- 2. Do NOT open the bonnet or coolant cap while steam is present — risk of serious burns
- 3. Turn on the heater to maximum to draw heat away from the engine
- 4. Wait at least 30 minutes for the engine to cool before inspecting
- 5. Check coolant level in the reservoir once cooled — top up only if safe
- 6. Call JAS Auto Workshop on 05 44 44 9611 or arrange a tow
- 7. Do not drive an overheated car — it risks blown head gasket or seized engine
How We Diagnose & Fix It
- 01 Full cooling system inspection and pressure test
- 02 Diagnose whether the fault is thermostat, water pump, radiator, or head gasket
- 03 Cooling system flush to remove contaminated coolant
- 04 Replace faulty thermostat, water pump, radiator, or hoses as needed
- 05 Check radiator fan operation and replace motor or relay if faulty
- 06 Refill cooling system with correct coolant specification and bleed air
- 07 Pressure test and road test to confirm the cooling system is holding
Related Services
Frequently Asked Questions
- Why does my car overheat in Sharjah traffic?
- In slow traffic, the car relies entirely on the electric radiator fan for cooling. If the fan isn't working, temperature climbs rapidly. Hot UAE ambient temperatures reduce the cooling margin further. Low coolant and a failing thermostat make it worse.
- How much does cooling system repair cost in Sharjah?
- Thermostat replacement costs AED 300–600. Radiator replacement costs AED 600–1,500. Water pump replacement ranges from AED 700–2,500 depending on whether it's timing-chain driven. We provide a full quote after diagnosis.
- Can overheating damage the engine permanently?
- Yes. A single severe overheating event can warp the cylinder head, blow the head gasket, or in extreme cases crack the engine block. If the temperature light comes on, stop the car immediately.
- How often should I change my coolant in Sharjah?
- We recommend a coolant flush every 2 years or 40,000 km in UAE conditions. Old coolant loses its heat-transfer efficiency and inhibitor additives, making overheating more likely in Sharjah's extreme heat.
- What's the first thing to check when a car overheats?
- After the engine has cooled, check the coolant level in the reservoir. If it's low, top up carefully. Then check for visible leaks on hoses and the radiator. If you can't find the cause, bring the car to JAS Auto Workshop for a pressure test.
Get Your Car Fixed in Sharjah
WhatsApp or call JAS Auto Workshop for a free assessment. We'll diagnose the problem accurately and give you a written quotation before any work begins.