Summer To-Do Lists for your car, oil and keep and more!
WCCO's Car Care
WCCO's Car Care Jun 6, 2026
Summer To-Do Lists for your car, oil and keep and more!

Summer To-Do Lists for your car, oil and keep and more!

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Summer To-Do Lists for your car, oil and keep and more!
Term

tire pressure

Tire pressure is how much air is in your tires. If it’s too low or too high, the tire can wear out faster and not grip the road as well. Summer heat can change tire pressure, so it’s smart to check it.

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dipstick

A dipstick is a simple stick you use to check fluid levels in the engine. You pull it out, look at the marks, and see if the fluid is low. It’s one of the easiest ways to notice a problem early.

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sealed system

A sealed A/C system means the cooling fluid is supposed to stay inside the system. If it’s not cooling well, it usually means something is leaking or broken, not that you can just add more refrigerant. A shop typically checks for leaks before recharging.

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refrigerant

Refrigerant is the substance your car’s A/C uses to make cold air. If there isn’t enough of it, the A/C won’t work as well. Mechanics usually check for leaks before adding more.

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charging system

The charging system includes components like the alternator and related wiring that keep the battery charged while the engine runs. If it’s failing, the battery can’t maintain enough voltage, leading to starting and electrical issues. Heat can accelerate battery aging, so testing both the battery and charging system is a smart summer check.

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car batteries

A car battery provides the electricity your car needs to start and run electronics. Heat can wear the battery out faster, so it may feel fine until later. Testing in summer can help prevent a no-start situation.

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capacity

Battery capacity is basically how much starting power the battery can provide. Over time, the battery can hold less power, so starting becomes harder. Cold weather often makes that weakness show up.

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windshield sunshade

A windshield sunshade is a cover you put in front of your windshield to block the sun. It helps keep the inside of the car from getting extremely hot. That can protect the dashboard and make the car more comfortable when you get in.

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clear coating

Clear coating is the shiny, transparent layer on top of your car’s paint. It acts like a shield from the sun and helps keep the paint from breaking down as fast.

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oxidizing

Oxidizing is basically “weathering” from the air and sunlight. On a car, it can make paint look dull or worn out over time, so protecting the surface helps slow that down.

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wax

Wax is a protective coating you put on top of your car’s paint. It helps repel water and makes dirt like bugs easier to wash off.

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undercarriage

The undercarriage is the bottom of the car. In winter, salt on the roads can cause rust, so washing the underside helps protect it.

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UV rays

UV rays are ultraviolet radiation from the sun that can damage automotive finishes. The host connects wax and protective coatings to reducing UV-related paint and surface degradation, which helps preserve appearance and can make the car easier to clean.

2020 RAV4
Car

2020 RAV4

This is a Toyota RAV4 from 2020. The caller says the transmission doesn’t seem to shift correctly, which is a serious drivability problem that usually needs a proper check, not just a quick reset.

Term

scan tool

A scan tool is a device a mechanic plugs into the car to read error codes. It helps find what the car’s computer thinks is wrong with systems like the transmission.

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transmission controller

The transmission controller is the car’s computer for the transmission. It decides when to shift, and if it finds a problem it can log an error and the shifting can feel wrong.

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fault code

A fault code is an error message stored in the car’s computer. It helps a technician figure out what part or system is causing the problem.

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solenoids

Solenoids are electrically controlled switches that move fluid or change pressure inside the car. If they don’t work right, the car may shift poorly or throw warning codes.

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torque converter lockup

In an automatic transmission, the torque converter can slip a bit to help the car move smoothly. Lockup is when it “grabs” more directly to improve efficiency, and if it doesn’t lock/unlock correctly you can feel problems.

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fuel injection

Fuel injection is how the engine gets fuel using electronically controlled valves (injectors). It helps the engine deliver the right amount of fuel for different conditions.

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direct injected

Direct injection is a modern fuel system where fuel is sprayed straight into the engine’s cylinders. It lets the engine control fuel more precisely than older systems, which can improve efficiency and emissions.

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heated seats

Heated seats are seats with built-in electric heaters. If something goes wrong electrically, the car may log a fault code even though the seat isn’t physically broken.

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cooled seats

Cooled seats are seats that help keep you cooler, usually by moving cooled air through the seat. If the cooling system has an electrical or airflow problem, the car can detect it and set a code.

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lane assist

Lane assist is a safety feature that watches the lane lines and helps prevent you from drifting out of your lane. It can warn you and sometimes help steer back.

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warning light

A warning light is the car’s way of saying “something isn’t right.” It usually means the computer noticed a problem, but it doesn’t always tell you exactly what part is broken.

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diagnostic trouble tree

A diagnostic trouble tree is like a troubleshooting checklist for a specific error code. It tells the mechanic what to test next until they find the exact part or wiring issue causing the problem.

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sludge and crud

Sludge and crud are gunky deposits that can form inside an engine when oil breaks down or isn’t changed often enough. They can clog passages and keep parts from getting properly lubricated.

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synthetic oil

Synthetic oil is a type of engine oil designed to stay effective longer and protect engine parts better. It’s often recommended because it helps reduce wear and buildup inside the engine.

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5000 mile interval

An oil-change interval is how often you change your oil. This segment is saying to change it about every 5,000 miles to keep the engine protected.

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oil weight

Oil weight is the rating that tells you how thick the oil is when it’s cold and when the engine is hot. Using the right one helps the engine get proper lubrication.

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thorough inspection

A thorough inspection goes beyond just changing oil and typically checks multiple wear items and potential issues (leaks, brakes, tires, wipers, and other components). The host contrasts this with quick-lube style services that may only visually check a limited set of items.

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quick loop

A quick-lube place is a shop that mainly does fast oil changes. The host is saying they may not check the whole car the way a full inspection would.

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transmission fluid

Transmission fluid is the fluid that keeps your car’s gearbox working smoothly. It helps gears shift correctly and helps cool the transmission.

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brake fluid

Brake fluid is the fluid that makes your brakes work when you press the pedal. If it gets old or contaminated, braking can feel worse and parts can wear faster.

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coolant

Coolant is the fluid that keeps the engine from getting too hot. It circulates through the engine and helps carry heat away.

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steering suspension brakes

They’re talking about inspecting the parts that control steering, ride/suspension, and braking. Problems in these areas can cause noises, uneven handling, or unsafe braking.

2024 Ford Edge
Car

2024 Ford Edge

The Ford Edge is a crossover SUV. This is about the power seat height—whether the driver’s seat can be adjusted to match the passenger’s seat—and the idea that the seat movement is limited by the factory parts.

2008 Ford Taurus
Car

2008 Ford Taurus

The Ford Taurus is a long-running midsize sedan, and this segment is about diagnosing a front-end noise on a 2008 example. The host explains a practical diagnostic approach: reproduce the noise, note when it happens (braking, turning, driving), then inspect the area with the car safely lifted.

Concept

duplicate that noise

This means the mechanic tries to make the sound happen again. They watch for when it happens—like while turning or braking—so they can figure out what part is causing it.

1997 Volvo wagon
Car

1997 Volvo wagon

They’re talking about a 1997 Volvo wagon whose AC is leaking refrigerant. The question is whether to replace the whole AC compressor or just a small seal (an O-ring), based on where the leak shows up.

Term

recharge the air conditioning systems

Recharging the AC means adding refrigerant back into the system so it can cool properly. If refrigerant leaked out, recharging alone won’t fix the problem unless the leak is found and repaired.

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tracer dye

Tracer dye is a special fluid mixed into the AC refrigerant. If the AC leaks again, the dye shows you exactly where the leak is so you can fix the right part.

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black light

A black light is a special light that helps you see the dye glow. Since the dye was added to the AC, the black light helps pinpoint where the refrigerant is leaking.

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O-ring

An O-ring is a small rubber seal that helps keep the AC connections from leaking. If the leak is coming from a connection, replacing the O-ring can be the fix instead of replacing the whole compressor.

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compressor

Your car’s A/C compressor is the part that makes the air-conditioning system work by pressurizing the refrigerant. If a seal inside it wears out and can’t be replaced by itself, mechanics often replace the entire compressor.

Buick Park Avenue
Car

Buick Park Avenue

The Buick Park Avenue is a comfort-oriented luxury car. Here, the question is about a 2005 model where the air-conditioning engages when it shouldn’t, even if you’re only using heat.

Term

AC clutch

The A/C clutch is the engagement mechanism that connects the engine to the A/C compressor when the system decides cooling is needed. If it’s engaging when you aren’t requesting A/C/defrost, it usually points to a control input or sensor/logic issue that’s commanding the compressor to run.

Term

relay

A relay is like a remote-controlled switch. In this case, removing it stops power from reaching the A/C clutch so the compressor won’t run.

Ford F150
Car

Ford F150

The Ford F-150 is a popular full-size pickup. The issue described is hesitation when shifting into drive, which could be caused by transmission fluid/shift behavior or something in the engine ignition that makes the car feel like it’s not engaging smoothly.

Term

fluid service

Fluid service means checking and possibly changing the fluid that helps the transmission shift. If the fluid is old, the shifts can feel delayed or not as smooth.

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plug

Here, “plug” means the spark plug. If it’s worn out, the engine may not ignite fuel as reliably, causing hesitation or misfires.

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cold start

A cold start is when you start the car after it’s been off for a while and the engine is cold. Some problems only show up right at that first start.

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misfire

A misfire means the engine doesn’t burn the fuel correctly in one or more cylinders. That can make the car run rough or feel like it hesitates.

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electronic components

Here, electronic components are the car’s electrical parts like sensors and computer modules. Moisture can sometimes cause them to malfunction.

Chevrolet Equinox
Car

Chevrolet Equinox

The Chevrolet Equinox is an SUV. In this story, the front grille area came loose after a small crash, and that can affect airflow to the engine cooling system.

Part

fan

The fan is a spinning part that can grab something if it’s not secured. That’s why loose pieces should be fastened down so they can’t get pulled into moving parts.

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door jam

The door jam is the spot on the door frame. Many cars have a label there that tells you the correct tire pressure to use.

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PSI

PSI is just a unit for how much air pressure is in your tires. Your car’s door-jamb label tells you what number to aim for.

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engine air filter

The engine air filter cleans the air that goes into the engine. If it gets clogged, the engine can’t breathe as well, and you may burn more gas.

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speed limit

Going faster usually uses more gas. Driving closer to the speed limit helps because the car has to work harder to push through the air.

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