Seasonal Vehicle Care for Hot, Dry Inland Driving

We do not get snow on Foothill, so winter checklists written for other states miss the point. The hard stretch here is summer: long hot days, stop-and-go on the I-10 and SR-210, and climbs toward the foothills. Heat ages batteries, cooks rubber and makes the AC work all day.

Rain is rare, which means worn wipers and thin tread go unnoticed until the first wet morning. Oil on the road surface makes that first rain slick. Planning around heat and that first storm covers most of what a local driver needs.

Before the first 95-degree week, check the parts that heat attacks first. A weak battery that started fine in spring can fail in a parking lot in July. An AC that was a little weak in May will likely be warm by August.

• Battery: get a load test. Heat shortens battery life more than cold does. See battery replacement.
• AC: notice weak airflow, warm air or a musty smell now, not on the hottest day. See air conditioning service.
• Coolant and hoses: look for low coolant, crusty residue or soft, swollen hoses.
• Tire pressure: set it cold, in the morning, to the number on the driver door sticker. Hot tires read higher.
• Cabin filter: a clogged one cuts airflow and makes the AC seem weaker than it is.

When school starts, the commute gets heavier and short trips multiply. Brakes and tires take the extra load, and the family car usually carries more people. Late summer is a good time for a safety look before the routine sets in.

• Tires: tread depth, uneven wear and the date code. Read the tire date code guide.
• Brakes: squeal, grind, pulsation or a pedal that sinks.
• Lights: headlights and brake lights, since mornings get darker.
• Rotation: if it has been a while, pair it with the next oil change.

Winter here means the first rain, cooler mornings and the occasional trip up the mountain. The first storm after a dry spell lifts oil off the pavement, so worn tires and wipers matter more than cold does.

• Wipers: replace if they streak, chatter or skip. See wiper blade service.
• Tread: thin tread loses grip fast on wet Foothill Blvd.
• Defroster and heater: make sure the windshield clears.
• Mountain trips: carry the chains or traction devices the road requires and check conditions before you go.

Spring is the quiet window before the heat. It is the best time to fix the AC while the shop is less busy and before a warm-air problem becomes a deadline. It is also a good time to catch up on items you pushed back over the winter.

• Test the AC on a warm afternoon and note how long the air takes to get cold.
• Replace the cabin filter if it has not been done in a year.
• Look at belts and hoses before summer loads them.
• If you plan a summer move, note that month-end dates book up quickly for U-Haul trucks. Call (909) 608-7699 to reserve.

Not everything needs its own trip. Many checks fit into a regular oil change visit, and your written estimate will split safety needs from wants that can wait.

A hot afternoon crawl on the I-10 or SR-210 gives the radiator little moving air, while climbs toward the foothills load the engine and transmission. Coming back down heats the brakes. Summer wear here is less about the calendar and more about how often your week combines heat, traffic and hills.

Signs worth a call:

• The temperature gauge creeps above its usual spot on a climb or in traffic
• The cooling fan roars long after you park
• A hot, sharp smell after a long downhill stretch
• Shifts that feel late or harsh once the car is fully warm

If the gauge heads toward hot, turn off the AC, turn the heater on full to pull heat away, and pull over when it is safe. Do not keep driving to "make it home."

Several seasonal checks take five minutes in a driveway with the engine cool. Others need a lift, a tester or gauges we keep in the bay. Use this split so a home check becomes an early warning rather than a guess about what is wrong.

Never open a hot radiator cap. Pressurized coolant can burn.

Summer is peak moving season, and month-end dates fill first. If your own car will tow a trailer, check its tires, brakes, cooling and hitch before moving day, because pulling weight in heat multiplies every weak spot. For a rental truck, plan the size and book early by phone.

• Call (909) 608-7699 to reserve a truck or trailer. Sizes are typical, so confirm current specs when you call.
• Ask for a hitch check if you are towing with your own vehicle.
• At pickup and return, do a walkaround: fuel level, cleanliness and lights.
• Load early in the morning, and keep water in the cab.