Monthly Archives: August 2020

Weather Station on Wheels (Vehicle Sensor Maintenance)

You probably never thought about it, but your vehicle is like a rolling weather station.  It can check the outside temperature, let you know when the roads are slippery and help you deal with rain. And how it does all those things is pretty cool.

First, just like any weather station, a vehicle has sensors that measure the driving and weather conditions you find yourself in.  Some of those sensors can control computerized systems in your vehicle to react to the weather.  It depends on whether you have a 2-wheel, 4-wheel or all-wheel drive vehicle how those sensors will respond.

Let's start with temperature.  Most vehicles now have a thermometer that measures the temperature outside.  It's usually in the front, and likely will tell you on the instrument panel what the outside temperature measures.  But a temperature sensor will also tell your vehicle's computers to turn on or off certain systems like the heating or air conditioning.  If your ambient temperature sensor isn't working right, some symptoms are a malfunctioning automatic A/C or a temperature display that is way different than the app on your phone says it should be.

Your vehicle will also have sensors that measure your speed at each wheel.  They work with an onboard computer to measure slippage in any of the wheels so traction control and antilock brakes work correctly in case of slick roads.

Your vehicle can measure something called longitudinal and latitudinal acceleration, and it uses a yaw sensor to do it.  That helps it determine if you might be in an oversteering or understeering situation.  It's important because it works with your vehicle's brakes to apply stopping power to keep you in control.

A steering wheel sensor tells the vehicle's computers what the driver is doing with the wheel.  It also can work with those wheel sensors to measure how slippery the roads are, whether it be due to a wet (rain) or granular (gravel or sand) surface.  By sending different torque or braking to each wheel, it helps the driver maintain control.

More and more vehicles now have a rain sensor that can turn on the wipers automatically when they measure precipitation on the windshield.

So, you're driving your own weather station, and making sure all this data is coming in properly depends on how each component is working.  Regular service and maintenance on these systems is important to make sure they can do their job. Your rolling weather station can't predict the weather, but it can sure help you deal with it, so help it do its job right.


Camarillo Car Care Center
2739 Daily Drive
Camarillo, CA 93010
805-482-2853
www.camarillocarcare.com

Going (Lug) Nuts (Lug Nut Replacement)

Here's a part of your vehicle you probably don't think about much: lug nuts.  They're what fasten your wheels onto your axles.  Pretty important, right? In order to take the wheels off your vehicle to service the brakes, rotate the tires, etc., the lug nuts have to be in good shape so a wrench will grip them tightly. 

Because lug nuts are on your wheels, they are exposed to all the elements of the road (salt, water, grime) and really take a beating. Unfortunately, some manufacturers have made them out of two different metals.  Underneath is the working part of the lug nut, made of steel.  On top is the decorative (the "good looking") part, made out of chrome, stainless steel or aluminum.  After a while, the steel part begins to corrode and expands.  That changes the shape of the outer cap, sometimes rounding off the hexagonal edges and making it hard (if not impossible) to either loosen or tighten the lug nuts since the wrench won't fit any more. 

The reason that's so important is those lug nuts must be functional, especially if you find you have a flat tire somewhere on the road.  If the wheel can't come off to be swapped with a spare, it leaves few options, one of which is your vehicle may have to be towed.  All that for corroded lug nuts!

When you take your vehicle in for service, the technician who works on it keeps an eye on many things, especially if he or she is removing wheels.  It's not unusual for your service advisor to recommend you replace several lug nuts at once since some corrode at a different rate than others. Your repair facility is trying to help you avoid driving a vehicle that has wheels that can't easily be taken off when they need to be.

The good news is there are one-piece lug nuts that don't have the problem the two-piece lug nuts have, so replacing them could eliminate that from happening again any time soon.  And that's not "nuts" at all.

Camarillo Car Care Center
2739 Daily Drive
Camarillo, CA 93010
805-482-2853
www.camarillocarcare.com

Tire or Re-Tire? (Getting Tires Ready for Hot Weather)

Heat isn't easy on vehicle tires, and as the seasons change, make sure yours are ready to take the heat. 

Let's talk first about inflation.  Heat causes air to expand, so heat alone can raise the pressure in your tires.  If you are driving on overinflated tires, they won't have as much contact with the road surface.  In that case, it will take you a longer distance to stop.

On the other hand, you don't want your tires to be underinflated during hot weather, either.  That can cause your sidewalls to flex.  Friction will then hike up the temperature and your tire can be in danger of blowing from the added heat.

Other things can cause problems, such as uneven wearing.  Your service advisor knows the signs to look for and can diagnose where the wear is and what is likely causing it.  Another thing a technician will look for on tires is tread depth and the condition of the sidewalls.  Any cuts, cracks or bulges could be indications that your tire is not healthy. 

Oh, and one other thing.  Your tires could have plenty of tread left on them but still be dangerous.  And that is because rubber ages, gets brittle and cracks after time.  (Ever run across an old rubber band in a drawer that has never been used but breaks the second you try to stretch it? 'Nuff said.) Some tire manufacturers recommend replacing tires after 6 years of their manufacturing date.  Your service advisor can read a manufacturing code and tell you how old your tires are. 

Tire manufacturer Michelin used to have an ad slogan that said, "Because so much is riding on your tires." That includes you and your passengers.  Always keep healthy tires on your vehicle and make sure they're ready for whatever season it is.

Camarillo Car Care Center
2739 Daily Drive
Camarillo, CA 93010
805-482-2853
www.camarillocarcare.com

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Sounds Like a Hot Rod (Noisy Exhaust System)

Driving along, your exhaust system's rumbling so loud that people turn and stare at you pass by.  You're wondering when the police are going to pull you over for illegal noise.

Your mind immediately thinks, aha! A broken muffler. 

Well, your exhaust system is composed of many more parts than just a muffler. 

Your engine makes power because of thousands of tiny explosions from detonating fuel.  Those explosions make a racket, so engineers came up with a system that acoustically dampens that sound in addition to getting rid of harmful exhaust.

In the engine is the exhaust manifold that looks like several pipes that join up into one pipe.  It directs exhaust to the catalytic converter. The catalytic converter converts harmful gases into less harmful gases using certain chemical reactions.  Then comes the muffler that has baffles inside to quiet the sounds of your engine noise.  Finally: the tailpipe.

All of those pipes and parts are joined together by clamps and held up by brackets, and they ride over some pretty bumpy roads.  They are also exposed to the elements, like salt, water, rocks and grit.  Chances are that one of those clamps or brackets has been weakened by corrosion.  When you hit a bump, bingo! The crack widens into a gap and there's a spot for the engine noise to come roaring out instead of being directed into the muffler's quieting chambers.

You might be surprised to know that the exhaust system can rust from inside out.  How? Moisture is one component of exhaust, and moisture on the inside can do the same kind of damage as moisture from the outside. 

It's a good idea to have your exhaust system looked at regularly by a technician.  He or she can evaluate the condition of the metal and recommend when it might be time to replace parts before they break.

Then you'll have a decision to make.  Newer exhaust systems are made out of stainless steel that is much less prone to corrosion issues.  Others are made of aluminized steel that also fights rust.  You've probably already guessed that they can cost more, but the extra price up front may give you an exhaust system that will last much longer. 

Sure, with a repaired exhaust system, you won't have quite the head-turning vehicle you once had.  You'll just have to live with all the quiet.


Camarillo Car Care Center
2739 Daily Drive
Camarillo, CA 93010
805-482-2853
www.camarillocarcare.com

The Red Menace (How to Deal with Rust)

Rust.  It's worse if you drive in places that use salt on the roads in winter, or if you spend time driving near a body of salt water.  But any vehicle has to deal with rust after years on the road.  And it's not just that rust can eat away your vehicle's body and fenders.  It can be a real problem around your suspension, drivetrain or any place where there's metal.

Rust takes its time.  You don't see it until it's already done its dirty work.  It can wreak havoc with your electrical system.  Sure, vehicle manufacturers do their best to keep it to a minimum, but especially with road treatments like brine around, their task is a difficult one.

The one spot everyone notices is in the paint.  You see a little bubbling under the once-smooth surface.  By the time it bubbles, it's well involved in rotting away that spot of your vehicle.  You wouldn't believe how just a little thing can start the process on its way.  A stone chips the paint down to the metal, moisture and salt reach the steel and rust is off and running.  It could be a scratch in the paint, a little dent, acid from a parking garage, tree sap, you name it.  If you spot it, show it to your service advisor because rust can be more than a cosmetic problem.  It can be a safety issue.

While you can see the rust destroy your vehicle's body, you can't see it destroying your engine.  But it can.  It can eat away at such areas as air intakes or the exhaust system.  Not only can it reduce performance, but also it can disable electrical connections.  In this day and age where just about everything in your vehicle has a computer component to it, just a small electrical problem can strand you at the roadside.

Corrosion can attack your vehicle's chassis or frame, and they are what provide the structural strength and stability for everything attached.  Think powertrain, suspension, axles, window frames. The list goes on and on.  Structural integrity is vital to safety, so the stakes are high. 

Now you can see why rust damages more than just the good looks of your vehicle. There's one thing to remember about corrosion - much of it is only visible from underneath the vehicle.  When you bring your vehicle in to Camarillo Car Care Center for service, our technician can look for any problems from that important vantage point.  It's always a good idea to point out any spots that you think might spell trouble.  That way you can stay ahead of it and beat rust at its own game.


Camarillo Car Care Center
2739 Daily Drive
Camarillo, CA 93010
805-482-2853
www.camarillocarcare.com

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