AUTONET TV

Give me a Brake (Light)!

If that little brake warning light pops up on your dash, do you know what it means? Well, if you said no, you wouldn't be alone. You know it has something to do with your brakes, but exactly what? You're not sure. One of the reasons is that it could mean a lot of different things.

It could be something simple, like you put your parking brake on and forgot to take it off. Easy fix, you're on the road in seconds.

Or, it could mean there's something wrong with your anti-lock brake system. That is a pretty complex symphony of speed sensors, computers and wiring, and sometimes things get a little out of whack. You could have a defective sensor or some wiring may have gotten damaged or come loose. A trained technician at Matt Davis Auto with special equipment can sort it all out.

It's also possible you have low brake fluid. That could be caused by a number of things. One simple reason is that your brake pads have worn down. Replacing them could solve the problem. Another possibility is that you have a leak in your brake system. That could be serious. If your brake fluid level gets really low, your stopping power goes down along with it, and a vehicle that can't stop is a safety hazard to you and others on the road.

Of all the warning lights on your instrument panel, pay attention to the brake warning light. If it comes on, come on over to Matt Davis Auto very, very soon. A vehicle is great when it's moving. But if it can't stop, well, that is a disaster waiting to happen.

We’d love to hear from you. Let us know if you have any questions.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com

Taking the Heat (Heater Hose Maintenance/Repair)

If you have an internal combustion vehicle, you know it has a lot of hoses that carry various fluids.  And if you have a heater in your vehicle, you'll have heater hoses.

A heater hose connects to and from the engine so some coolant can be circulated through a little radiator called a heater core.  In cold weather, that heater core acts as a heat exchanger to heat up your cabin.

Even in the hot weather, the heater hoses can prove problematic.  That's because they may remain pressurized even though you're not running your heater.  Heater hoses are made out of tough materials since they must handle heat and pressure.  But even the durable rubber, plastic and metal they are made out of can crack or leak from years of use.  That means coolant can be sprayed out into the engine compartment or leak onto a driveway or garage floor. 

You may be able to see a puddle of coolant under your vehicle or perhaps smell the odor of the coolant under the hood.  Some say it has a sweet smell.  Another sign coolant may be leaking out of the heater hoses is your engine may be running hotter.   You'll be able to tell by watching the heat gauge on your dash.  Let's say your heat gauge usually points just slightly below halfway between the C and H (Cold and Hot) of the heat gauge.  But now it is just slightly above.  That's enough to tell you that the coolant temperature has gone up a little, a possible sign of trouble.

This is a good time to swing by your service facility and have them take a look. If they catch the leak when it's small, it's a relatively simple matter of draining the coolant, replacing the hoses and replacing the coolant.  Sometimes, though, a heater hose can suddenly burst and a lot of coolant can leak out quickly.  That can, in turn, cause your engine to start to overheat.  In that case, you may see your vehicle's temperature gauge shoot up pretty quickly.  Then it's best to pull over and have your car towed to a repair facility since driving with no coolant can cause severe engine damage.

Preventative maintenance is your best insurance against heater hose problems.  A technician will periodically check for any signs of cracks or leaks.  You should expect to replace a heater hose at least once during the time you own your vehicle.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com

Bad Vibes (Disc brake rotor problems)

If you were to name the most important safety feature on your vehicle right now, what would your answer be? A lot of driving experts would agree that it’s your brakes.  Most newer vehicles use a well-engineered and efficient style of brakes called disc brakes. 

The name disc brakes comes from one of the components: a disc attached to the wheel hub that is squeezed by parts called calipers.  If you’ve ever ridden a bicycle with hand brakes, you probably have seen how they squeeze against the rim of the bike wheel to stop the bike. It’s similar to the way your vehicle’s calipers squeeze against the disc rotor, with added parts called brake pads attached to the calipers that are what create the friction and stop your vehicle.

Here’s why disc brakes need regular maintenance.  Over time, that friction creates wear and tear on the brake pads and the rotors, and you’ll start to see the signs.  Your brakes may have one of the 3 “S” sounds: squeaking, squealing, or scraping. The sound is usually the first sign of brake pad wear which can lead to rotor damage.  Soon you may notice a pulsating or vibration when you brake. That’s because your once smooth and straight rotor disc is warping from the heat generated from friction. Or it may be due to wear.  Eventually, your brakes will take a longer distance to stop your vehicle, and the rotors can have grooves carved into them.

When you start noticing any of these signs, it’s a good idea to have them inspected by a trained technician.  They will measure the rotor thickness, check wear patterns for grooves and heat discoloration, and see how much of the brake pads remain. They will also check to make sure all brake components are moving freely, check your brake fluid, and look for corrosion.

Most vehicle manufacturers require worn or damaged rotors to be replaced, not resurfaced. It’s all part of a complete brake job, replacing pads and the brake hardware parts along with the rotors. It reduces the chance of premature failure.

How often you will need your brakes serviced depends on the manufacturer’s recommendations, your driving habits, and the environment you live in.  Your service facility can recommend the best replacement parts based on those factors. 

Regular maintenance and attention are vital for keeping your brakes performing like they are designed to. Remember, your brakes are your vehicle’s most important safety feature.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com

The Need for Speed (Wheel Speed Sensor Maintenance)

Today's vehicles have some pretty amazing technology in them, including a computerized braking system we all pretty much take for granted these days.  Antilock brake systems (ABS) have been around for years but they help drivers stop in much shorter distances reliably than ever before.  When you see your ABS warning light come on, it's important to find out what's causing the problem. It's a safety issue.

Often the problem when the ABS light comes on is a faulty wheel speed sensor.  (In some cases the traction control light will also come on, perhaps because of a non-working wheel speed sensor.) Your vehicle uses the speed sensors to measure the rotational speed at each wheel. That sensor sends the speed data to a computer that can then adjust braking power and prevent your wheels from locking up. 

If any of the wheel speed sensors isn't working right, the ABS warning light will go on and the vehicle's computer will turn off the antilock brake system.  You'll still have working brakes, but you will lose the functionality of that computerized system.

When your vehicle warns you the ABS has a non-working sensor, you can have a technician check to see what's going on. It could be one of the sensors is dirty and a cleaning will solve the problem.  But it also could be that one or more sensors needs to be replaced. 

A technician will use computerized diagnostic equipment to determine what and where the problem is, replace any bad parts and then check to make sure the system is fully operational. 

Antilock brakes and traction control are significant technologies that help prevent your vehicle from slipping on less-than-perfect road surfaces, especially useful during wintery weather.  Make sure they're helping you drive the way they designed to.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com