If you live in the Valley, you already know summer is the most stressful season for a car. We see the same five or six problems roll in week after week from May to September, and almost all of them are preventable with a little April prep.
Here's the list, ranked roughly by how much grief it'll save you.
1. A/C system check
If you wait until your A/C blows warm in July to think about it, you've already lost. Every shop in town is booked, parts are on backorder, and you're driving in 110° heat.
An A/C inspection in March or April is fast and cheap. We check refrigerant pressures, compressor operation, condenser fan, and vent temps. If anything's borderline, we have time to fix it before you need it.
2. Coolant flush and pressure test
Coolant breaks down over time and loses its corrosion protection, and in our climate, a marginal cooling system is the difference between a fine summer and a blown head gasket on the 202.
If it's been more than 2 years or 30,000 miles since your last coolant service, do it now. A pressure test on the cooling system takes 15 minutes and catches small leaks (radiators, hoses, water pumps) before they become roadside-tow leaks.
3. Battery test
Here's the part most drivers get wrong: summer kills batteries, not winter. Heat accelerates the chemistry inside a lead-acid battery; cold just exposes a battery that was already weak.
If your battery is 3+ years old in AZ, it's living on borrowed time. A load test (not just a voltage check) tells you how much real capacity is left. Most parts stores do this free; we do it as part of any visit.
4. Tires, pressure and tread
Hot asphalt + underinflated tires + freeway speeds = blowouts. We see them every summer. The tire that was fine all winter at 28 PSI is the same tire that blows out at 75 mph on a 115° afternoon.
- Check pressure cold (before you drive). Match the spec on the door jamb sticker, not the sidewall.
- Check tread depth with a penny, Lincoln upside down. If you can see all of his head, replace them.
- Look for sidewall cracks. Heat + UV damages rubber even on tires with good tread.
5. Wipers
Monsoon season hits in July. You won't think about your wipers until you're suddenly driving through a wall of water and they're smearing it across your windshield. Replace them in spring while you're thinking about it. They cost $20–$40 a pair and take 5 minutes to swap.
6. Cabin air filter
This is the filter your A/C pulls air through before blowing it at you. A clogged one cuts your A/C performance noticeably (your A/C might be fine, the air just can't get through). And in AZ they clog fast with desert dust.
It's a 10-minute swap on most vehicles. Owner's manual or a YouTube video for your specific car will show you where it is, usually behind the glove box. Costs about $15–$30.
7. Belts and hoses
Visual inspection only, don't touch a hot engine. You're looking for:
- Cracks or fraying in the serpentine belt.
- Soft, mushy, or bulging spots on coolant hoses.
- Wet spots near the water pump (early seal failure).
- Anything that looks visibly aged compared to what's around it.
A belt that breaks on the 60 in July is a tow. A belt that gets replaced in April for $80 is a non-event. Same with a hose.
The 30-minute version
If you've only got half an hour to spend on the car yourself:
- Check tire pressure cold. Adjust to door-jamb spec.
- Check tread on all four tires.
- Pop the hood. Look at the coolant level (overflow tank, NOT the radiator cap), oil level, belts, and hoses.
- Test all your wipers, including rear if you have one.
- Top off washer fluid.
If anything looks suspicious or you'd rather have a tech run through it, we do a full summer-prep inspection in about 45 minutes and tell you exactly what (if anything) needs attention. Schedule it in March or April, the closer you wait to May, the longer the lead time gets.