As summer approaches in South Africa, we brace for more than just heat. Here in Gauteng, summer is synonymous with the infamous “Highveld Rainstorms”—heavy thundershowers that turn roads slippery and visibility low.

 

While temperatures rise, the rainy season brings unique challenges for drivers, making it essential to prepare your vehicle for the combined effects of heat and wet conditions. By conducting a thorough pre-summer check, you’ll not only be ready to handle the scorching sun but also the sudden downpours that characterize this season.

 

1. Cooling System: Your Car’s Lifeline in the Heat

 

The cooling system prevents your engine from overheating, a common issue during the sweltering summer months. Proper cooling system maintenance is vital as it ensures your vehicle can handle the strain of driving in high temperatures, even during rainy weather when humidity levels are high.

  • Check the Coolant Levels: Inspect the coolant reservoir and top up if needed. Over time, the coolant loses its efficiency, so if you haven’t flushed it in the last two years, now is a good time to do so.

 

  • Inspect the Radiator: Make sure there’s no debris, dirt, or bugs blocking airflow through the radiator grille. Clean it carefully with a soft brush or compressed air.

 

 

  • Pressure-Test the Cooling System: A pressure test can reveal any leaks or weak spots in your radiator, hoses, or the water pump.

 

  • Replace Hoses and Clamps if Necessary: Cracked hoses or loose clamps can cause leaks, leading to a loss of coolant and potential overheating.

 

  • Replace the Thermostat: A faulty thermostat can prevent your car from maintaining the correct temperature. If you notice your car running hot, it’s wise to replace it before the heat peaks.

 

 

2. Air Conditioning: Stay Cool on the Go

 

Driving without a properly working air conditioner in the summer can be unbearable:

  • Test the A/C System: Turn on your A/C and ensure it’s blowing cool air. If not, it might need a recharge or further inspection for leaks.

 

  • Inspect the A/C Compressor Belt: Look for wear and tear, as a broken belt can lead to a sudden failure of your A/C system.

 

 

  • Clean or Replace the Cabin Air Filter: A clogged cabin filter can reduce airflow, making your A/C work harder. Replacing it will ensure the air in your car is fresh and the system is operating efficiently.

 

3. Tyre Inspection and Maintenance: Safety on Hot and Wet Roads

 

Tyres are one of the most crucial components of your car, especially during the summer when roads are hot, and during Highveld Rainstorms when wet roads can increase the likelihood of hydroplaning:

  • Check Tyre Pressure Regularly: Hot weather can cause tyre pressure to increase, which might lead to overinflation and blowouts. Make sure to check tyre pressure when the tyres are cool and keep it within the manufacturer’s recommended range.

 

  • Inspect Tread Depth for Wet Conditions: Adequate tread depth is essential for maintaining traction on wet roads. Worn-out tires increase the risk of skidding or hydroplaning during heavy rains. Use a tread gauge or ruler to ensure the tread is deep enough.

 

 

  • Consider All-Weather Tires: If your tyres are due for replacement, consider all-weather tyres. These provide better grip on slippery surfaces and help with water displacement.

 

  • Rotate Tyres and Check for Damage: Rotate your tyres to ensure even wear and check for cracks, bulges, or punctures that might compromise safety.

 

 

4. Wipers and Windshield Care: Prepare for Heavy Rains

 

During the rainy season, visibility is everything:

  • Inspect Windshield Wipers: Check that your wipers are in good condition and replace them if the blades are cracked, streaking, or not clearing the windshield effectively.

 

  • Top Up Washer Fluid: Ensure your windshield washer reservoir is full and add a windshield washer additive that’s effective against grime and bugs.

 

 

  • Check for Windshield Cracks: A small crack can quickly spread during a rainstorm due to temperature fluctuations. Have any cracks repaired as soon as possible.

 

5. Battery Health: Avoid Getting Stranded

 

High temperatures and humidity can accelerate battery fluid evaporation and corrosion, which can be worsened by the strain of running air conditioners and other accessories.

  • Inspect Battery Terminals: Clean off any corrosion around the terminals to maintain a strong connection.

 

  • Test Battery Voltage: If your battery is older than three years, have it tested to make sure it can handle the increased strain of summer driving. Consider replacing it if it’s weak to avoid unexpected breakdowns.

 

 

6. Brake System: Ensure Optimal Stopping Power in Wet Conditions

 

The combination of high heat and sudden rain can put additional strain on your brakes:

  • Inspect Brake Pads and Discs: Look for wear and tear on brake pads and ensure the discs are smooth without grooves or warping. Wet roads reduce braking efficiency, making it crucial that your brakes are in top condition.

 

  • Check Brake Fluid: The heat can cause brake fluid to evaporate faster, leading to spongy brakes. Make sure your brake fluid level is adequate, and if the fluid looks dark, it’s time for a flush and refill.

 

 

7. Fluid Levels and Conditions: Keep Everything Running Smoothly

 

Fluid levels tend to drop faster in the heat, and maintaining them is crucial for the longevity of your vehicle, especially when rain increases humidity and puts extra strain on your car:

  • Check and Top Up Fluids: Inspect the engine oil, transmission fluid, brake fluid, and power steering fluid. Top them up as needed and ensure there are no leaks.

 

  • Oil Change: If you haven’t changed your oil in the last six months, do it now. Fresh oil helps maintain proper engine temperature and performance.

 

 

8. Protect the Interior: Guard Against the Sun

 

Excessive heat can fade your car’s interior and damage materials:

  • Use a Sunshade: When parked, use a windshield sunshade and window shades  to reduce interior temperatures and prevent damage to your dashboard and seats.

 

  • Apply UV Protectant: Protect leather or vinyl surfaces with a UV protectant to prevent cracking and fading.

 

 

9. Exterior Care: Keep Your Car Looking New

 

High temperatures and constant rain can also take a toll on your car’s paint and exterior:

  • Wash and Wax Regularly: Washing your car removes debris that can scratch the paint, and a good coat of wax adds an extra layer of protection against UV rays and rain.

 

  • Check Seals and Weatherstripping: Rain can leak into your car if the seals around windows or doors are compromised. Check for any signs of wear and replace as needed.

 

 

10. Final Check-Up: Leave it to the Professionals

 

If you’re unsure about any of these checks, or if you’re planning a long road trip, schedule a pre-summer inspection with your trusted mechanic. A professional can perform a comprehensive assessment, ensuring all components are ready to handle the summer heat and unpredictable weather.

 

Conclusion

 

By taking these proactive steps, you can prevent common summer car problems and stay safe on the road when faced with Highveld Rainstorms and high temperatures. A well-maintained car will keep you safe, comfortable, and ready for all your summer adventures, whether it’s a sun-soaked road trip or navigating through heavy downpours.

 

Stay safe, and enjoy your sun-and-rain-filled summer!