The senor light kept. Took the car to several places including the dealer and was told that one of the tires probably had a small leak. Since tires were showing wear, suggested new tires which I purchased less than a month ago (not from the dealer). This morning light was on again and took the car to a body shop near work to have tires checked and was told that all tires were 27 and should be 32. Air was added and light is off again but not confident that the problem is resolved. Could the senor be too sensitive? I am ready to dump the car and get something without all the fancy frills.
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Re: Tire Pressure Sensor
Hi. The car is really making u a favor. For every PSI less is about 0.7 mpg you lose on gas mileage. Besides, it is normal for it to lit at 27 or less. But, you might wanna check the valve stems on the rims. Or repair the tires on your nearest tire center. Usually cost under $10 ea. The vehicle... is just doing what it's supposed to do. Hope this'll help you.
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That is the low tire pressure warning. It can come on for several reasons. It commonly comes on in the fall as temperatures drop, the air in the tires contracts and the pressure drops. Check the air pressure and fill as needed. The tires also all need to be within 4 psi of each other.
Another common cause is that one or more tire sensor needs the battery replaced. This is not generally considered a DYI project because for most cars the tires must be removed from the rims. Finally the sensor can be damaged by hitting a curb or by adding chemicals into the tire used to seal small leaks.
As long as you check your tires visually prior to driving it is usually ok to wait to service the sensor for when you replace or rotate your tires.
Please keep in mind driving on a tire with low pressure can damage the tire, the rim or even cause delamination of the tread and cause an accident. The Firestone recall that involved Ford Explorers several years ago was from driving on tires with low pressure.
tire monitor system has a sensor in each rim. damage to these senors, or replacement of compete rim and wheels without reinstallation of sensors will cause light to come on. if nothing was changed, possible long life battery in tire senors is bad.
When you replace a tire on a vehicle equiped with a tire pressure sensor system, there are several things you need to be aware of. Hopefully the tire company was careful when changing the tire. The valve stem sensor is about $100.00+ to replace on most vehicles equiped with them. On newer vehicles the tires are filled with nitrogen to keep corrosion down on the sensor. When a tire is replaced the sensor system has to be reset a day or two after the replacement, this allows for breaking in of the new tire. All the tires should be checked for proper manufacturer inflation before resetting the system, including the spare if there is an inflated on on the car. Then the internal computer control can be reset. The owners manual should have instructions on how to reset the sensor program, there is usually a small button under the dash that is used for the reset. Once reset, your system should work as before the flat. If it doesn't stay reset, then the tire place didn't do the installation correctly damaging the sensor or the tire is loosing pressure. Check with your car dealer to see what the tires were originally filled with so you don't mix gases when equalizing the pressure. If your owners manual does not have the reset instructions the dealer may have to set it electronically. Regards, rcampsr
Veve713: You probably didn't need new tires unless you had some miles on it. Remember that the spare tire also has a pressure monitor as well. It most likely is causing the low tire pressure light on the dash and only needs to be inflated back to what ever your other tires are set to. I had the same problem on my RX and took it back to the dealership where they told me since the spare is exposed to the same elements (it's under the back of the RX - you have to use the tire iron to let the spare down), it will inevidably lose air.