Summer heat can be brutal on your vehicle. Use this comprehensive maintenance checklist to ensure your car runs reliably through the hottest months.
Cooling System
- Check coolant level and condition (flush if older than 2 years)
- Inspect radiator hoses for cracks or swelling
- Test thermostat operation
- Clean debris from radiator fins
Air Conditioning
- Test AC output temperature (should blow 40-50 degrees F)
- Check for refrigerant leaks
- Replace cabin air filter ($15-30 DIY)
Tires
- Check tread depth (replace below 4/32 inch for wet roads)
- Verify tire pressure monthly (heat increases pressure)
- Inspect for sidewall cracks or bulges
- Rotate tires if due (every 5,000-7,500 miles)
Under the Hood
- Replace engine air filter if dirty
- Check brake fluid level
- Inspect serpentine belt for wear
- Top off windshield washer fluid
