Pre-Summer Routine: Getting Your Car Ready for the Heat

Educational guide · sources linked inline · reviewed November 8, 2026

Quick answer

Fill each tire to the manufacturer’s recommended pressure on the door-pillar placard or in the manual, checked cold, spare included. Don’t use the sidewall maximum. ^[NHTSA] Inspect tread and sidewalls for cuts, punctures, bulges, scrapes and cracks, and make sure tread is at least 2/32 inch. ^[NHTSA]

This routine organizes official summer guidance into one session: what you can check in the driveway, what to book with a shop, and what to keep in the car.

What this means for you

Heat waves bring a spike in breakdowns, and the thought of being stranded on a hot freeway is genuinely stressful. AAA says many of these situations could potentially be avoided with an inspection. ^[AAA] This routine gives you a clear, manageable checklist, some of which you can do yourself and some of which you’ll hand to a shop, so you go into summer prepared instead of worried.

Driveway checks (about 30 minutes)

1. Tires

2. Lights

Check headlights, brake lights, turn signals, emergency flashers and interior lights, plus trailer lights if you tow. ^[NHTSA]

3. Wipers

NHTSA notes wiper blades are vulnerable to summer heat and can deform. Inspect both sides and replace worn ones. ^[NHTSA]

4. Fluids

Check engine oil, brake fluid, transmission or clutch fluid, power steering fluid if hydraulic, and washer fluid. ^[NHTSA] Top off only with the type in your owner’s manual. ^[AAA]

5. Floor mats

Make sure mats are the right size and secured with retention clips, so they can’t interfere with the pedals. ^[NHTSA]

Shop checks (book one visit)

6. A/C and cabin filter

NHTSA recommends checking A/C performance and the cabin air filter before traveling, noting lack of A/C especially affects children and older adults. ^[NHTSA]

7. Battery and charging system

Have a mechanic check the battery and charging system. ^[NHTSA] AAA advises testing batteries more than three years old, securing the battery, cleaning terminal corrosion and making sure clamps are tight. ^[AAA] Slow “stutter” starts are often a sign of a weakening battery. ^[AAA]

8. Cooling system, belts and hoses

Confirm coolant meets the manufacturer’s specification and have the system checked for leaks. ^[NHTSA] Inspect belts and hoses for bulges, blisters, cracks or cuts, and replace obviously worn ones. ^[NHTSA] AAA adds soft spots to the list and recommends coolant flushes at the manufacturer’s interval. ^[AAA]

9. Recalls

Run your VIN through NHTSA’s recall lookup for any free safety repairs. ^[NHTSA]

Keep in the car

NHTSA’s suggested kit includes a phone and charger, a first-aid kit, a flashlight, flares and a white flag, jumper cables, a tire gauge, a jack and ground mat, gloves and a change of clothes, basic tools and duct tape, water and paper towels, non-perishable food, drinking water and medicines, extra washer fluid, maps, and emergency blankets. ^[NHTSA]

If trouble happens anyway

If you lose power or see steam, AAA says to get off the road, ideally into shade, turn on hazards, and wait at least 20 minutes before opening the hood if there’s steam. ^[AAA] Never leave a child alone in a parked car. NHTSA notes a child’s body temperature rises three to five times faster than an adult’s. ^[NHTSA]

Make it a yearly habit

Put this routine in your calendar for the same week each spring. Done once a year, it covers nearly every heat-related weak point official sources highlight, and turns summer from a worry into just another season.

Protect the battery through the season

AAA’s Via magazine says summer heat, not winter, does the most damage to car batteries. It recommends parking in a garage or shade, using a reflective sunshade if the battery is in the cabin, and keeping under-hood airflow clear. ^{[AAA Via]} It also suggests having the battery checked before summer and again after, to catch a failing one before winter. ^{[AAA Via]}

Plan your trips

NHTSA advises checking weather, road conditions and traffic before heading out, allowing extra time, reviewing directions even if you use GPS, and letting someone know your route and arrival time. ^[NHTSA] It also recommends keeping your gas tank close to full whenever possible. ^[NHTSA]

Hybrids and EVs

NHTSA advises hybrid owners to keep gasoline in the tank to support the engine, and says EV owners should still check applicable fluid levels. ^[NHTSA] DOE notes some EV battery systems use liquid coolant that may require regular checks. ^[DOE] Add those to your shop visit list.

Watch the gauges all summer

AAA recommends keeping an eye on the engine temperature gauge and warning lights through hot weather, and checking under the car for leaks. ^[AAA]

NHTSA also recommends making sure you have a spare tire and a car jack kit before long trips. ^[NHTSA] Check both during your driveway session.

Keep every receipt in one folder so the next appointment starts with a clear history.

Calm next steps

Block out one weekend morning in late spring.
Do the driveway checks: tires, lights, wipers and fluid levels.
Book a shop visit for the battery test, cooling system and A/C check.
Restock your emergency kit and keep water in the car.
Repeat the tire check monthly all summer.

Frequently asked questions

What fails most in summer heat?

AAA says flat tires and dead batteries are two of the most common problems drivers face in extreme heat. ^[AAA]

How long does a car battery last?

AAA says most batteries last 3–5 years, and heat can shorten that to as little as 2 years. ^[AAA] ^[AAA]

What should I check on belts and hoses?

NHTSA says to look for bulges, blisters, cracks or cuts. AAA adds soft spots. ^[NHTSA] ^[AAA]

Sources

General education, not a diagnosis. See our disclaimer.