Before summer in South Carolina, check your AC performance and cabin air filter, have the cooling system inspected for leaks and fan operation, load-test the battery, check tire pressure and tread, and replace worn wipers. Heat is what makes marginal batteries, hoses, belts and AC components fail, so catching them in spring prevents breakdowns in July.
Why summer is hard on vehicles here
Midlands summers bring long stretches of 90-degree-plus days, high humidity and stop-and-go traffic with the AC running nonstop. Under-hood temperatures climb far past the outside temperature. Heat speeds up wear on batteries, rubber hoses and belts, coolant and AC components, and parts that are close to failing usually fail in July.
The pre-summer checklist
| Item | What to check |
|---|---|
| AC | Vent temperature, compressor engagement, condenser fan, cabin filter |
| Cooling system | Coolant level and condition, hoses, radiator, fan operation, pressure test if overdue |
| Battery | Load test, especially if it's 3+ years old; clean terminals |
| Belts | Serpentine belt wear and tensioner condition |
| Tires | Pressure (cold), tread depth, sidewall cracks, spare |
| Wipers | Replace if streaking. Summer storms come fast. |
| Fluids | Oil, brake fluid, transmission fluid condition |
| Lights | Headlights, brake lights, turn signals |
| Towing gear | Trailer wiring, hitch, brake controller, trailer tires |
Tires and heat
Tire pressure rises in heat, about 1 psi per 10°F, so check pressure cold, in the morning. Under-inflated tires flex more and run hotter, and that's a recipe for a blowout on I-26 in August. Check the spare too.
Battery and heat
Heat damage over the summer is the reason so many batteries fail on the first cool morning of fall. A load test in spring tells you whether yours will make it. See why SC heat kills batteries.
Don't forget the lake trips
Towing a boat to Lake Murray adds load to the engine, cooling system, transmission and brakes. Check trailer lights and wiring, tire pressure on both vehicle and trailer, and consider a transmission cooler if you tow often.
For fleets
Schedule a summer-readiness check for every unit in the spring PM cycle. AC and cooling problems on work vans don't just strand vehicles. They make crews miserable. See fleet preventive maintenance.
Frequently asked questions
When should I get my car checked for summer?
In spring, typically April or May in the Midlands, before the heat settles in.
Should I switch to a different oil in summer?
Use the oil viscosity your manufacturer specifies. Modern multigrade oils are designed for year-round use.
Is it bad to leave my car in the sun?
Heat ages dashboards, batteries and tires faster. Shade or a windshield sunshade helps.
Can you do a summer check at my home or office?
Yes. A full seasonal inspection is done on-site, with photos of anything that needs attention.
Want a mechanic to confirm it?
We come to you in Lexington, Irmo, Chapin, Cayce, West Columbia and Columbia, and we test before we replace anything.
