AUTONET TV

The Byte Stuff (Your Vehicle's Computers)

Nobody has to tell you that computers are a part of so many things in our lives.  Smartphones, kitchen appliances, vacuum cleaners, televisions.  You name it—it has a computer in it.  And your vehicle is no exception.

The earliest cars relied on the technology of their time, and there was no such thing as a computer.  But now, it's not unusual for a vehicle to have as many as 150 computers in it.

They perform a variety of functions. An important one is diagnosing your vehicle's problems.  There are various sensors throughout modern vehicles that measure thousands of data points.  When something is not working correctly, they send a signal to another computer that stores that information. The data can be read by someone who has a special computer that plugs into a port in your car.  It displays certain codes that help technicians track down the culprit. 

But it's not just the diagnostics that are computerized.  Everything from your vehicle's fuel injection to anti-lock brakes is.  Convenience features such as power windows, rain-sensing windshield wipers, a wi-fi-hot spot, streaming video and navigation are all sophisticated computers.  Then there are the safety features; air bags, traction control, automatic emergency braking and a host of others are all dependent on computers.

It is important that those computers work correctly because they interface with many of the other computers on board.  To properly diagnose problems with those computers requires training and special equipment. Your service facility has invested considerable resources into both, and they are equipped to properly evaluate and repair and/or replace malfunctioning components. 

Some lament the days when backyard mechanics could pull out their tools and do their own repairs.  Those days are fast disappearing with the computerization of vehicles.  But look at the bright side.  Your vehicle does so much more, has so many more features and travels far more safely than those past generations drove.  And they're bound to get better and more sophisticated down the road.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

Chilly Warning (Diagnosing a Noise in Cold Vehicle)

When the weather gets colder, sometimes the noises your vehicle makes will change.  For example, you may notice a whining sound when you get going in the morning.  It may go away when the vehicle warms up, but it's best not to ignore that sound because it could be a warning of worse things to come.

Colder temperatures cause different components to behave differently.  Let's take a look at a few of them.  First, the fluids in your vehicle.  Cold temperatures can make them behave a little differently, such as engine oil, transmission fluid and power steering fluid. Those characteristics could change if the fluids are older and full of contaminants.

Belts also can create a whining noise when cold.  Since they turn pulleys that move other things, several factors can create issues.  Increased friction can change proper tensions on belts.  Plus, belts change as they age and may crack, get loose or develop a glazed surface. Belts and pulleys also must be aligned properly to work the way they're designed to.

As you can imagine, it's easier for a technician to diagnose a noise if the vehicle is making it.  And if a vehicle only makes a noise when it's cold, that sound may be gone by the time the vehicle makes it to the repair facility.  That means a driver may have to consider dropping off the vehicle the night before so the technician can be the first to start it the following morning.  Most service facilities can accommodate that with either a drop-off box or other arrangement.  Heed your vehicle's warning when you start to hear unusual noises.  That's a cool idea you should be able to easily warm up to.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

A Squirrely Problem (Animals Nesting in Engine)

If you park your vehicle outside, you are exposing it to all sorts of critters that would love to use it for nesting, food storage and shelter.  There are plenty of pictures online of people who've discovered there was more than an engine under the hood.  In one case, the driver of an SUV started to smell a slight burning odor when she was driving.  Turned out to be 200 walnuts and a lot of grass had been stored there by some industrious squirrels preparing for the upcoming cold weather. 

The SUV owners had their vehicle inspected not long before this happened, but it doesn't take some animals long to set up house in what they think is the ideal spot to make their winter home.   Obviously, that can create problems.  Squirrels, mice, rats and other small animals can chew through hoses and wires.  Plus what they store as food and nesting material may prevent engine parts from moving the way they are supposed to.  Imagine a radiator fan that won't turn because it's laden with heavy walnuts.  Or the fire hazard created by flammable brush on a hot manifold.

Probably the best solution is to store your vehicle inside a rodent-tight building, but that's no guarantee.  Unfortunately it doesn't take a very big hole or gap for small mice or other creatures to get in.  Some careful sealing with materials like cement or steel wool can reduce rodent access effectively, but they're always looking for access so you can't let down your guard.

If you're not able to store your vehicle inside, you may try spraying lavender or mint essence around the engine or in the wheel wells.  Rodents don't seem to like those odors very much.  If you drive your vehicle every day, you're less likely to have unwanted residents than if you leave it sit for days.  In either case, if you have experienced animal problems in the past, open your hood and inspect your engine frequently. 

Check with your service adviser for recommendations on how to keep animals out of your vehicle.  You're not the only one whose vehicle looks like the perfect winter apartment to some critters.  Preventing animals from getting to your vehicle is worth some time and expense because damage from gnawing teeth can be very costly and difficult to repair.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

The Puzzling Puddle (Leaks Under Vehicle)

Ever notice a little spot of liquid under your vehicle after you've parked in your driveway or garage? It may have been something as simple as water left from air conditioning condensation.  But then again, it could be a sign that there's trouble brewing in one of your vehicle's systems.

You can help your service facility diagnose the problem by getting a little sample of the drip.  At the same time, you may save yourself a tougher clean up task by preventing the leaky fluid from really messing up the driveway or garage floor.  The first thing is to put something under the vehicle. A flattened out cardboard box will do fine.  You may also want to slip a little disposable aluminum tray or pan under it to catch a bit of the fluid.  Chroma and consistency can help a technician quickly figure out what kind of fluid you're dealing with.  You can take your sample with you when you go to your service facility.

Also note how much of the substance is there over what period of time, when you started to notice it and its location relative to the vehicle.  Is it on the passenger's or driver's side? Front, middle or back? Vehicle's have different designs, so where their equipment is located will depend on make and model. 

The leaky fluid will have a certain look to it and consistency.  If it's blue, it may be windshield washer fluid and a sign that your washer fluid tank has a leak.  If it's green, it could be antifreeze.  Orange may mean rusty water or transmission fluid.  Brown? Might be oil.

There should be no leaks in your powertrain if things are maintained properly.  A small leak may not seem like a big deal, but sometimes they can get much bigger quickly.  A coolant leak, for example, may suddenly go from pinhole to flood, draining your cooling system and putting your engine in danger of overheating. 

It is a really good idea to have a professional check out your leaks as soon as you notice them.  And the more clues you can provide, the happier the technician will be as the search for the problem gets underway.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

In the Hot Seat (Repair and Maintenance of Seat Heaters)

It's chilly outside. You flip on that switch that looks like a picture of a seat with little heat waves rising from it.  You expect soon you'll feel that warmth but… wait! It's not getting warmer.  Oh no, what's wrong with my seat heater? There could be lots of reasons it's not working, and it could be as simple as a fuse or as major as the heating element itself.  But it's something to leave to a pro to diagnose and repair.

Let's say it turns out to be a blown fuse.  Simply replacing the fuse may not fix it because there was a reason the fuse blew in the first place.  It's possible the on-off switch has worn out or corroded.  Perhaps the wiring connection isn't completing the circuit (could be corroded or full of dirt) or the voltage reaching the heating element isn't correct. 

There's a little sensor that keeps track of the seat heater's temperature called the thermistor.  When the seat is hot enough, it will stop the juice from heating it any more.  Sometimes those fail.  But if all of these components are healthy, you may need a new heater element. 

Those seat-heating elements are made up of wires that get sat on.  A lot.  That can put significant strain on them.  Putting something heavy on the seat can break them. Or, if you put your knees on the seat cushion as you're getting something in a rear seat, that can also damage the element.  Sometimes they can be repaired but often they have to be replaced.  And here is where the technician's expertise comes into play.  That heater element is attached to the seat's fabric and replacing it can be tricky.  It also can require disassembling a lot of the seat to access it. 

Seat heaters are a wonderful feature and they make your vehicle oh, so much cozier.  So keep them working and enjoy the warmth!

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886