AUTONET TV

Differential Essential (Differential Fluid Exchange)

What's the dif? To an automotive technician, it's the differential, a part of your vehicle that helps direct power from the engine to the wheels.  The differential is a gearbox that enables the drive wheels to turn at different speeds (they do that when you turn).  

Inside the differential is a fluid that makes sure those gears and other parts are lubricated since there are a lot of metal moving parts in there.  (Your vehicle may have more than one differential in it depending on the drivetrain.) 

As you can imagine, it's important that the lubricant in those differentials do its job.  Otherwise, the gears may be damaged by heat and friction. The more you drive your vehicle, the more likely it is for that lubricating fluid to break down.

So, it's important to have the differential fluid exchanged every so often.  Your vehicle's manufacturer recommends how often your model should have that done, but a common interval is every 30,000-60,000 miles/50,000 km-100,000km.  Regular exchange of differential fluid can reduce premature wear of the gears inside.

Scheduled maintenance goes a long way to preventing differential problems, but sometimes when they begin to fail, you may hear the vehicle sounding a little louder than usual where the differentials are located.  

When it comes to changing the differential fluid, some have a drain plug in them. Others require the entire cover to be removed to drain the fluid.  There are often gaskets that must be changed at the same time to make sure there are no leaks.
Now when someone asks you, "What's the dif?" You’ll know how essential the differential is and how to keep it running in top shape.

Franklin Auto Service
32725 Franklin Rd
Franklin, MI 48025
248-626-2080
http://www.franklinautoservice.net

In That Case? (Transfer Case Exchange)

Ever wonder how all-wheel-drive or 4-wheel-drive vehicles get the power from the engine to the front and rear wheels? The magic happens in what's called a transfer case.  In some all-wheel-drive vehicles, it's sometime called a power take-off unit, or PTU.

Inside the transfer case is a set of gears.  And to keep those gears meshing smoothly, they have to be lubricated and kept cool.  What does that is called transfer case fluid. Depending on your vehicle's type of transfer case, it is filled with either an automatic transmission fluid, a gear oil that's a bit thicker or transfer case fluid designed to be use for your transfer case.

As happens with all lubricating fluids, the transfer case fluid has things in it that break down the older they get.  They have corrosion inhibitors, detergents and anti-foaming agents that keep the lubricant from getting air bubbles in it. Transfer cases don't have filters in them to clean out impurities.

If you don't have your transfer case fluid exchanged for fresh, you risk damage to the case, and that can run into thousands of dollars.  So the wise driver makes sure the fluid is changed according to the manufacturer's recommendations.  For many vehicles, that is every 30,000 mi/50,000 km, but some require it more frequently.   Your vehicle service facility can advise you on what your vehicle's optimal interval is.

During the fluid exchange, any metal filings that may have come off are cleaned off of the drain and fill plugs that are usually magnetized to catch the stray metal pieces.

If you hear grinding noises coming from under your vehicle or if it is having trouble shifting gears or going in and out of 4-wheel-drive, those could be signs your transfer case needs service. In that case, have our technicians check it out.  The best plan of action?  Keep your transfer case fluid maintained and it should keep you heading down the road for years to come.

Franklin Auto Service
32725 Franklin Rd
Franklin, MI 48025
248-626-2080
http://www.franklinautoservice.net

Always on Guard (TMPS)

One of the most important things you can do to keep your vehicle running safely is to make sure your tires are properly inflated.  If one or more is vastly over- or underinflated, that has the potential to cause major handling problems and may result in a dangerous accident.

All vehicles in recent years are equipped with Tire Pressure Monitoring Systems, or TPMS.  One system uses small sensors in the tires that continually check the pressure in each tire.  That sensor sends a signal to computers in your vehicle which turns on an instrument panel light warning of low pressure when at least one is very low. Or it may update a numeric reading on your instrument panel which gives you an approximation of how many PSI (pounds per square inch) of air is in each tire. 

Another system works with your antilock brake system to measure the size of your vehicle’s tires.  When one wheel is going faster than another, it will spin faster. A computer sees that and alerts you that tire’s diameter is smaller than the others and therefore must be underinflated.

No matter what system you have, it’s also helpful for you to know how much pressure each tire is supposed to be inflated to.  You can find that on a label on the driver’s side door sill. In addition, the TPMS system should not be used as a substitute for checking your tires with a tire gauge since the TPMS accuracy usually isn’t quite as precise.  Keep in mind that tire sensors can fail, so each system acts as a backup for the other. 

Since many vehicles these days don’t have spare tires, it’s good to know that your TPMS can warn you if you have a leak in one of your tires.  If you get a low-pressure warning, many systems will tell you which tire is low, so you can do your own visual check.  Often you can see if you’ve picked up a nail or a screw if it’s sticking out of the tread or near the sidewall.

Being able to receive an early warning from your vehicle of abnormal tire pressure may give you a chance to safely drive to a service center before your tire slowly goes completely flat (which can ruin the tire and badly damage the rim). It also may ultimately prevent you from being stranded somewhere with a flat tire or, most importantly, having a sudden blowout on the road. 

Franklin Auto Service
32725 Franklin Rd
Franklin, MI 48025
248-626-2080
http://www.franklinautoservice.net

Stopping "Brake" Downs (Brake Pad Replacement)

If someone tells you to put the brakes on something, you know it means stop.  And stopping is one of the most important safety maneuvers you can do in any vehicle.  That means your brakes have to work properly. 

Let's face it.  You stop dozens of times every time you drive.  And over time, that takes its toll on your brakes.  Friction is what stops your vehicle.  Most newer vehicles have disc brakes, and the parts that wear out the fastest are those that rub against each other every time you stop, the rotors and the pads.

The rotors are discs that rotate with the wheels, and the pads are removable surfaces that make contact with the rotors to slow or stop your vehicle.  Bits of both wear off each time you stop, and when enough of either (or both) lose too much material, your brakes become unable to safely slow or stop your vehicle. 

The pads usually are the parts that wear out first.  Signs that your brakes might be getting worn are:

• You hear grinding, squeaking, or clicking when you apply them
• It takes a longer distance to stop
• Your pedal vibrates when you brake
• The front of your vehicle pulls to one side when you brake

If you notice any of these, bring your car to us so we can have a technician inspect your brakes. Most brake pads have a wear indicator that indicates it's time they should be replaced.  The technician who is checking things out will also look at your rotors for wear, as well as other brake system components.

With regular inspections and maintenance, you'll be sure that when you need to stop, your vehicle will be up to the task.

Franklin Auto Service
32725 Franklin Rd
Franklin, MI 48025
248-626-2080
http://www.franklinautoservice.net

Stopping "Brake" Downs (Brake Pad Replacement)

If someone tells you to put the brakes on something, you know it means stop.  And stopping is one of the most important safety maneuvers you can do in any vehicle.  That means your brakes have to work properly. 

Let's face it.  You stop dozens of times every time you drive.  And over time, that takes its toll on your brakes.  Friction is what stops your vehicle.  Most newer vehicles have disc brakes, and the parts that wear out the fastest are those that rub against each other every time you stop, the rotors and the pads.

The rotors are discs that rotate with the wheels, and the pads are removable surfaces that make contact with the rotors to slow or stop your vehicle.  Bits of both wear off each time you stop, and when enough of either (or both) lose too much material, your brakes become unable to safely slow or stop your vehicle. 

The pads usually are the parts that wear out first.  Signs that your brakes might be getting worn are:

• You hear grinding, squeaking, or clicking when you apply them
• It takes a longer distance to stop
• Your pedal vibrates when you brake
• The front of your vehicle pulls to one side when you brake

If you notice any of these, bring your car to us so we can have a technician inspect your brakes. Most brake pads have a wear indicator that indicates it's time they should be replaced.  The technician who is checking things out will also look at your rotors for wear, as well as other brake system components.

With regular inspections and maintenance, you'll be sure that when you need to stop, your vehicle will be up to the task.

Franklin Auto Service
32725 Franklin Rd
Franklin, MI 48025
248-626-2080
http://www.franklinautoservice.net