Summer heat and long road trips can put extra strain on your vehicle, increasing the risk of unexpected breakdowns and costly repairs. From overheating engines to failing batteries, certain car problems are more common in hot weather. The good news? With the right maintenance, you can avoid many of these issues and keep your car running smoothly all summer long. Here are some of the most common summer car repairs and how to prevent them.
1. Overheating Engine
Hot weather makes your engine work harder, and if your cooling system isn’t in top shape, your car could overheat. Signs of overheating include a rising temperature gauge, steam from under the hood, or a burning smell.
How to avoid it:
- Check and top off coolant levels before summer trips.
- Inspect radiator hoses for cracks, leaks, or wear.
- Flush and replace old coolant if it’s dirty or over 30,000 miles old.
- Ensure the radiator fan is working properly to keep the engine cool.
2. Dead or Weak Battery
High temperatures speed up battery fluid evaporation, leading to corrosion and reduced battery life. A weak battery can leave you stranded, especially when running the AC, lights, and other accessories.
How to avoid it:
- Have your battery tested before summer begins.
- Clean battery terminals to prevent corrosion buildup.
- Park in shaded areas to reduce heat exposure.
- Replace an aging battery if it’s over three years old or showing signs of weakness.
3. Tire Blowouts
Hot pavement combined with underinflated tires increases the risk of tire blowouts. If you’ve hit potholes or driven on worn tires all winter, summer heat could be the final straw.
How to avoid it:
- Check tire pressure regularly, especially before long drives.
- Rotate your tires every 5,000 to 7,500 miles to ensure even wear.
- Inspect for cracks, bulges, or low tread depth (use the penny test to check tread).
- Avoid overloading your vehicle, as extra weight increases tire stress.
4. Air Conditioning Failure
Nothing’s worse than a broken AC on a scorching summer day. If your AC blows warm air, has weak airflow, or makes strange noises, it may be low on refrigerant or have a failing compressor.
How to avoid it:
- Test your AC system before peak summer temperatures hit.
- Check refrigerant levels and recharge if needed.
- Clean or replace the cabin air filter to improve airflow.
- Listen for strange noises, which could indicate compressor problems.
5. Worn Brakes
Hot weather can increase brake fade, especially if you’re driving in hilly areas or stop-and-go traffic. If you hear squealing, grinding, or experience longer stopping distances, your brakes may need attention.
How to avoid it:
- Have your brake pads and rotors inspected at the start of summer.
- Check brake fluid levels and replace if needed.
- Avoid riding the brakes on steep inclines—downshift instead.
- Pay attention to any vibrations or pulling when braking.
6. Transmission Problems
Summer heat can cause transmission fluid to break down faster, leading to slipping gears, overheating, and rough shifting. If your transmission is hesitating, making noises, or leaking fluid, it needs attention.
How to avoid it:
- Check your transmission fluid level and color (it should be red or light brown, not dark or burnt).
- Service your transmission according to the manufacturer’s recommendations.
- Avoid excessive stop-and-go driving or towing beyond your vehicle’s capacity.
7. Fuel System Issues
Gasoline evaporates faster in warm weather, which can cause fuel system problems and reduce efficiency. Fuel pumps and injectors can also wear out faster when working overtime in the heat.
How to avoid it:
- Use top-tier fuel to keep injectors clean.
- Replace the fuel filter if your car is due for one.
- Avoid running your tank too low, as sediment can clog the fuel system.
Final Thoughts
Summer driving can be hard on your vehicle, but preventative maintenance goes a long way in avoiding expensive repairs and roadside breakdowns. Checking your cooling system, battery, tires, brakes, AC, and fluids ensures your car is ready for the heat and long drives. If you haven’t had a recent inspection, schedule a summer maintenance check with a trusted auto repair shop to keep your car running smoothly all season long.