AUTONET TV

Automotive Tips from A.G. Automotive & Diagnosis: Battery Testing

The simple fact is that 70% of car batteries fail within 4 years. They just need to be replaced at A.G. Automotive & Diagnosis when they are no longer able to hold a full charge.

Batteries are a big ticket item for most Winnetka drivers and it’s tempting to put off buying a new one as long as possible. But a battery that cannot hold a full charge requires the alternator to work extra hard, causing it to wear out prematurely.

Your A.G. Automotive & Diagnosis service advisor can test your battery to see if it should be replaced. Testing is a good idea for CA drivers because a battery might still be good, but become dead because of a bad alternator or even a worn serpentine belt and tensioner.

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

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.

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

Emergency Items for Winnetka

Safe CA travel starts with preventive maintenance and good vehicle care at A.G. Automotive & Diagnosis. But there are other things Winnetka residents can do to prepare for emergencies on the road. Here's some auto advice that can help you plan for emergencies, and just may save your life — or someone else's.

First, Winnetka auto owners should consider keeping an auto emergency kit in their vehicle. The kit should contain items that will allow you to deal with common emergencies on the road.

Some items you should carry in your vehicle include jumper cables (or a booster box), flares, a flashlight and some basic hand tools. Other useful items include gloves, two quarts of oil, some antifreeze, water and everything you need to change a tire. You might also consider a can of tire inflator, which is a great temporary fix for minor flats.

But taking care of your vehicle is only part of emergency preparedness. It is to take care of the people in the car, too. For this reason, you should carry a first aid kit, drinkable water and blankets. Other items to consider include high-calorie food items (like energy bars), toilet paper, a towel, a hat and boots. And, of course, when you travel in CA and out-of-state you should always have your cell phone, some emergency cash and a credit card.

Depending on where you live, you may need to add other items to this list. For example, sunscreen, sunglasses and extra water would be good to have on hand in a hot climate. For the cold and snowy CA season, some salt, a hand shovel, emergency blankets and matches might be in order. Also, if your area is prone to severe weather or earthquakes, you should check with your local Red Cross or disaster preparedness office for their recommendations on what to keep on hand in your vehicle for emergencies.

When you travel away from your Winnetka home, you should check the weather forecasts before you leave and pack appropriate emergency supplies. Also, do some research about the areas you will be traveling through so you can be prepared for the climate and terrain. Remember the basics: heat, water, shelter, light and food.

When you travel, it is important to leave your itinerary with a trusted friend or family member. Check in periodically at prearranged checkpoints. That way, if something does happen, someone else will quickly know you are in trouble and will be able to send help. These checkpoints will also help rescuers find you quickly, as they will have a better idea as to where you are.

The automotive professionals at A.G. Automotive & Diagnosis want Winnetka drivers to be safe. Preventive maintenance, proper planning, smart communication: these are the basics of safe travel.

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

Go Big or Go Home: Upsize Your Wheels at A.G. Automotive & Diagnosis

A lot of us Winnetka drivers like our vehicles to reflect our personalities. We're picky about color and body style. We'll customize anything from floor mats to window tints to license plates. One popular way for CA motorists to customize a vehicle is to get new wheels.

Wheels come in thousands of designs. Custom wheels can add personality, style or sass to a vehicle. Many of these customizations involve getting a bigger wheel.

Fifteen or 16-inch wheels used to be the factory standard, but today, because a lot of Winnetka drivers like the look of larger wheels, many vehicles are available with 17 or 18-inch wheels. Optional wheel packages of 20 inches or more are also available in Winnetka.

If you want to upsize the wheels on your current vehicle, however, you should know it's not a do-it-yourself project. There are factors involved in ensuring your wheel change doesn't jeopardize the safety of your vehicle.

First of all, you need to understand rolling diameter. The rolling diameter is the overall height of a tire. If you increase the rolling diameter of your tires when you upsize your wheels, you may have to modify your suspension to make sure the larger tires fit in the space and don't rub in turns or over bumps. If that's more work than you're willing to do or pay for, then you need to maintain rolling diameter when you change your wheels.

It's not as hard as it sounds. Imagine a doughnut. That doughnut represents rolling diameter, so you can't make the doughnut bigger. However, you can increase the size of the doughnut hole. That gives you a bigger wheel. Tires with reduced sidewall on larger wheels will preserve your rolling diameter.

Rolling diameter is important because your wheels and tires still need to fit inside the wheel well. Also, your speedometer, odometer and anti-lock brakes are all programmed to work with a specific rolling diameter. You'll throw off the readings on your speedometer and odometer if you change your rolling diameter. And for your anti-lock brakes to work properly, your rolling diameter has to be within 3% of factory recommendations. While some Winnetka drivers who upsize may not be concerned about meter readings, throwing off the brake system is a serious safety hazard.

Further, many vehicles in Winnetka are now equipped with electronically controlled suspensions. Changing the rolling diameter will negatively affect this system as well, which can lead to a less smooth ride and lower handling performance as well as safety concerns.

Your friendly and knowledgeable A.G. Automotive & Diagnosis tire professional may be able to reprogram your vehicle's computer to adjust for a larger (or smaller) rolling diameter.

So to maintain rolling diameter, you'll need tires with a shorter sidewall. These tires will be designed to give the sidewalls the strength they need to maintain ride quality. Consider that doughnut again. As the wheel (the doughnut hole) gets bigger, the sidewall of the tire (the width of remaining doughnut) gets shorter. That means the tire holds less air. The sidewalls have to be made stiffer to compensate for the decreased air capacity.

To improve their strength, the shorter tires will also be slightly wider than your previous tires. But this means you'll have a larger contact patch, or, in other words, a larger area of tire making contact with the road. This can actually increase your handling performance and decrease braking distances. Many CA auto buffs customize their wheels just for this reason—they want the improved performance rather than looks or style. If you drive a truck or an SUV around Winnetka, you might be interested in the extra control an upsized wheel can provide.

Now, that larger contact patch still has to fit inside your wheel well without rubbing when cornering or when bouncing over bumps or potholes on Winnetka roads. This is termed fitment, and you may need a few adjustments so your new wheels will fit properly. You may need spacers so that your brakes will fit inside the new wheels, as well.

A.G. Automotive & Diagnosis tire professionals are experts at mounting, adjusting and customizing wheels. They can give you a lot of good auto advice about wheels and tires and how they affect driving performance and car care. They can help you select wheels and tires that will suit your driving needs and habits.

For example, if you drive off-road around Winnetka, you should consider a higher profile tire. This type of tire will protect your rims from damage while you're bouncing over rocks. Or, if you tow a trailer or haul heavy loads around CA, you'll want a tire with a load rating equal to your demands. Your friendly and knowledgeable A.G. Automotive & Diagnosis tire professional can help you with these types of concerns.

Once you've got your new wheels, have your service advisor at A.G. Automotive & Diagnosis see if you need an alignment. You don't want those new wheels and your higher performance compromised by poor alignment. Get the most out of your investment by getting the work done right at A.G. Automotive & Diagnosis in Winnetka.

Last but not least, remember tire pressure. With larger wheels, your new tires will hold less air and they'll need slightly higher pressure. You'll need to stay on top of preventive maintenance and keep them properly inflated. Be sure to check their pressure at least once a week. If you don't keep your tires at their correct pressure, they will wear out really fast. It will also affect your braking and handling performance.

So smile and show off your vehicle around CA. Make it all yours. Bumper stickers, vanity license plates, custom wheels — strut your stuff!

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