If you’ve ever seen steam pouring from your bonnet in South Africa’s summer or stuck in heavy traffic, you know how alarming it is when your car overheats. Overheating can cause serious engine damage and lead to expensive repairs if not handled properly. This guide covers why cars overheat, steps to take during an emergency, recommended repairs, typical costs in SA, and prevention tips.
Why Does a Car Overheat?
Engines generate heat, and your car’s cooling system works to keep things at a safe temperature. Overheating means this system isn’t working—often because of:
- Low or leaking coolant
- Blocked or broken radiator
- Damaged radiator hoses
- Faulty thermostat or water pump
- Malfunctioning cooling fan
Signs Your Car Is Overheating
- Temperature gauge in the red zone
- Steam or smoke from the bonnet
- Sweet smell (leaking coolant)
- Dashboard warning lights
Pull over safely and turn off your engine immediately to prevent major engine damage.
What to Do If Your Car Overheats
- Stop safely and turn off the engine.
- Wait 15–30 minutes before opening the bonnet or radiator cap (to avoid burns).
- Check coolant level: If low, top up with coolant or water if absolutely necessary.
- Look for leaks under your car.
- If you’re unsure, book a mechanic to fix your overheating issue for professional help at your location.
Diagnosing the Problem
If you’re comfortable, check:
- Is the radiator fan spinning? (If not, it may need repair.)
- Any visible leaks? Inspect your car for coolant leaks.
- Are hoses brittle or cracked? Replace damaged radiator hoses.
- Is your coolant old or discoloured?
For precise diagnosis, let a Fixxr mechanic inspect components like the thermostat, radiator, or coolant level sensor replacement.
Typical Repair Costs in South Africa
| Service | Cost Estimate (R) |
|——————————-|——————–|
| Radiator Flush | 650 – 1,300 |
| Cooling System Flush | 850 – 1,700 |
| Radiator Hose Replacement | 400 – 900 per hose |
| Coolant Level Sensor | 650 – 1,200 |
| Radiator Replacement | 2,500 – 6,000+ |
A schedule a cooling system flush can resolve many issues. Using the right coolant for car is essential to avoid future overheating.
Preventing Overheating
- Check coolant monthly; top up as needed
- Inspect the radiator and hoses for wear
- Learn when and why to flush your radiator
- Ensure correct coolant mix (typically 50/50)
- See more tips on maintaining your car’s cooling system
- Discover what makes up your car’s cooling system
SA’s climate puts extra strain on cooling systems, so prevention is crucial—especially before long trips or during summer.
Immediate Help When You Need It
Don’t risk expensive damage or being stranded. Trust Fixxr’s mobile mechanics for on-site service, transparent pricing, and a 6-month/10,000km warranty. Book a mechanic to fix your overheating issue today and keep moving safely.
