AUTONET TV

A Honking Big Jam (Stuck Horn)

At one time or another, most drivers honk their horn at someone who might be texting at a stoplight or not paying attention when they're driving.  But what happens when you tap on your horn and all of a sudden it won't quit? Everyone's looking at you like you're an angry jerk and all you want to do is turn it off!

It helps to know the basics of what's happening when you honk your horn.  There's a switch in the steering wheel, of course, and when you press on it, it sends power to a relay which then energizes the horn.  Bingo.  Sound.  When the horn sticks on, one of these parts or the wiring has developed a problem. 

With the ear-splitting noise inside your cabin, it may be hard to keep your cool, but do your best to stay calm.  Try pushing the horn several times; it may un-stick the switch if you're lucky.  If not, there are a couple of things you can try.

First, if you can, pull your vehicle off the road and into a spot where you're not disrupting traffic.  If you feel comfortable rummaging around in your vehicle's fuse box, you might be able to pull the fuse that manages the circuit for your horn system.  A hint: the fuse boxes sometimes have a label inside showing which fuse goes to which part of the vehicle. Find the fuse that goes to the horn and pull it out (sometimes there's a fuse-pulling tool inside the fuse box).

But many people don't feel like tackling that.  Yes, you can drive over to a service facility with the horn blaring (not the best idea).  Or call your service facility and see if they might be able to send someone over to where you are so they can shut off the horn.

At the shop, a technician can check wiring, switches, relays and other components to find out what's wrong.  This is something that should be left to a professional for a couple of reasons.  First, repairs around the steering wheel can involve airbags.  Second, some horn components may be part of a vehicle's alarm system. 

The bad news is that your horn may not give you any warning before it starts blaring uncontrollably.  But the good news is that a horn doesn't malfunction all that often, and now you have a plan if it does.    

A.G. Automotive & Diagnosis
19735 Sherman Way Suite 2
Winnetka, CA 91306
(818) 438-9608
http://www.agautodiagnosis.com

Using Proper Fluids in Your vehicle

Today, A.G. Automotive & Diagnosis is writing about the proper fluids for your vehicle. It's become more complicated with changes in automotive design and manufacturing. It's not that people in Winnetka are confused as much as they don't realize how much things have changed in recent years.

If you have questions about the fluids in your vehicle, please don't hesitate to stop by A.G. Automotive & Diagnosis. You can find us on 19735 Sherman Way Suite 2 in Winnetka, CA 91306.
Just give us a call at (818) 438-9608.

Let's take engine oil. Twenty or 30 years ago, there were just a handful of different weights of oil. The weight of an oil is a scientific measure of its properties, particularly its viscosity or thickness.

It was common in those days to use a lighter weight oil in the winter when it's cold outside. That way the oil would be able to splash around inside the engine and protect the parts before it was fully warmed up. And a heavier weight oil would be used in the summer. The thicker oil wouldn't thin out too much in the summer heat and vaporize in the engine.

Modern valve trains have become very complicated with more moving parts and small passages than ever before. The valve train is in the top of the engine, so when the vehicle has been turned off for a while, the oil tends to run down to lower areas.  That means the valve train parts are vulnerable at start-up, before the oil starts circulating.

So new weights of oil have been introduced to meet the engineering specifications of these newer engines.

Manufacturers are recommending specific weights of oil. The recommendation is often printed on the oil fill cap. It's certainly in the owner's manual. Of course, A.G. Automotive & Diagnosis in Winnetka can look it up for you.

It's more important than ever to have the correct weight of oil. The wrong weight could actually harm the engine.

Other fluids are also becoming more sophisticated. In the last few years new types of transmission, power brake fluid and coolant have all been introduced for some of the same reasons as for engine oil.

In addition, vehicle manufacturers are now using a wider variety of materials in these systems. Looking at the cooling system as an example, it used to be that the parts were all made out of steel or iron and the hoses were rubber. Now, some parts are plastic, aluminum or other materials.

So the anti-corrosion additives contained in the coolant, or anti-freeze, need to be different in order to protect the different materials used to make the cooling system. If you use the wrong coolant that wasn't formulated to protect your plastic cooling system parts, they could become corroded and fail. And if you're using the wrong coolant, your cooling system won't be covered under warranty. So it's important to use the right coolant and to not mix different types.

Your owner's manual or service advisor at A.G. Automotive & Diagnosis can make sure you're using the right type. You may have heard of universal coolant. Universal, or global, coolant can be added to other types without harmful reactions. That's OK for an emergency top off, but following your manufacturer's recommendation for your vehicle or other auto type is always a safe bet.

In the area of brake fluid, there are a couple of new formulations. It's important to remember that the new ones aren't better than the old ones. They're just different formulations for different vehicles. So if your vehicle calls for DOT 3, using DOT 4 or DOT 5 is not an upgrade. Use the recommended formula.

There are fluid formulations for vehicles with higher mileage. These are special engine oil, transmission fluid and so on that contain additives to condition and restore seals and gaskets in older engines.

They're fine to use as long as they're a variant of the proper fluid. In other words you can use a high mileage engine oil as long as it's also the correct weight recommended by the manufacturer. Same goes for transmission fluid; as long as it's the right type for your transmission.

A.G. Automotive & Diagnosis
19735 Sherman Way Suite 2
Winnetka, CA 91306
(818) 438-9608
http://www.agautodiagnosis.com

A.G. Automotive & Diagnosis On Your Serpentine Belt

Today we're going to be talking about serpentine belts for our Winnetka, CA, customers. Let's start by talking about the accessories that are driven by the serpentine belt. First is the alternator. That's the device that makes electricity to power the vehicle and recharge the battery. Then there's the air conditioning compressor that makes cool air for you while you're driving around CA in the summer.

The power steering and power brake pumps are driven by the serpentine belt in most Winnetka residents' vehicles. Those pumps provide pressure that assists your steering and braking.

In many vehicles, the water pump is driven by the serpentine belt. The water pump is what circulates the coolant that protects your engine. In some cars around Winnetka, CA, the water pump is driven by the timing belt.

The radiator cooling fans on some vehicles are also driven by the serpentine belt. Some have separate electric motors. That's really a lot of work for one belt.

But modern engine design has a single belt that snakes around the front of the engine and drives most, if not all, of these accessories. Serpentine belts do a lot of work, but they're tough and can last for a long time.

Just how long will they last? That'll vary for each individual car in the Winnetka area. Your owner’s manual will have a recommendation for when it should be changed, but it could need it sooner. The good news is that a visual inspection at A.G. Automotive & Diagnosis can detect a belt that's getting close to failing.

Your friendly and knowledgeable A.G. Automotive & Diagnosis service advisor can look at the belt: if it has more than three or four cracks per inch, it needs to be replaced. A deep crack that's more than half the depth of the belt - replace. Frayed, missing pieces, a shiny glazed look? Toss it. Come see us.

A.G. Automotive & Diagnosis
19735 Sherman Way Suite 2
Winnetka, CA 91306
(818) 438-9608
http://www.agautodiagnosis.com

Slippery When Wet (Driving on Wet Leaves)

When the leaves fall, you might take a sightseeing trip to see them at peak color.  Or you may simply live in a spot where there are a lot of trees.  When those leaves get wet, you'd be surprised to learn just how slippery they can be. 

We all know ice is slippery to drive on.  What causes tires to slip on ice is a thin layer of water that comes between the road and your tires.  Wet leaves can have the same effect.  The surfaces of leaves are super slick when they're dry, even worse when you add a little moisture.  There's one other thing about leaves.  They are smaller than each tire's footprint, so your tread grips the pavement with uneven traction.

One study showed that your stopping distance can more than double on a surface covered with wet leaves when compared to that same road when it's dry.  Double! That can spell trouble.  So if you find yourself heading into an area with wet leaves on the road, slow down before you get into a jam.  If you do start skidding, use the same driving techniques as you would on ice.  Let off the accelerator, resist jamming on the brakes and steer into the skid.  Again, speed can get you into trouble fast on a slippery surface.

One thing that can help is having tires that are appropriate for the way you drive and the places you travel.  Your service advisor can offer suggestions for tires that are right for you.  Have a technician examine your tread depth and the condition of your tires' rubber.  Sun can break down rubber over time, and age can cause tires to fail, even if their tread seems to be deep enough. 

Your tire is the point of traction between your vehicle and the road.  Uncontrolled skids spell trouble and danger.  Slow down when you see wet leaves on the road.  They can make traction disappear before you know it.

A.G. Automotive & Diagnosis
19735 Sherman Way Suite 2
Winnetka, CA 91306
(818) 438-9608
http://www.agautodiagnosis.com