Tire Pressure Sensors

[333]

Originally Posted by wildexcel

Part # 56053030AB

I have new wheels on order and need to get an extra set. Are the sensors located in the valve stem or how are they installed?

[kenm]

Originally Posted by 333

I have new wheels on order and need to get an extra set. Are the sensors located in the valve stem or how are they installed?

Yes, the sensors are an intergal part of the valve stems. The major part of them goes inside the wheel.

[rsmeanie]

How do these work? Are they pre-programmed to work on a specific vehicle? Are they keyed to a specific location? I know there are sensors in the wheelwells but if we rotate the tires, will the EVIC show the correct readings?

[kenm]

Rotating the tire has no effect on the sensors. They use a close distance wireless signal to communicate with the receivers. When I ordered mine they asked for my VIN# to get the right sensors. They may have several different frequencies that they use thus the need for the VIN# to identify the frequencies you car uses.

[jaak]

I had one sensor changed, and the EVIC showed that wheel as 0 when I drove. However it did see the sensor for it. At a traffic light, I turned the car off, opened the door (some of the systems don't shut down until you do that) then closed it and restarted and it took the new sensor in to the EVIC and reported correctly.

Smart system. I have the sensors in both my wheel sets and the new wheels took just fine.

I was told that the sensors are designed to be replaced when the tires are replaced. They are sealed units, so the battery will die eventually and isn't replacable (easily). They are activated when the wheel's spinning at a certain rate. (Saves on battery)

[headbussaboi]

Don't mean to bring this thread back up but how do you know if the sensors will fit the new wheel/tire combo? I mean, how is the manufacturer supposed to know? Is it just a clearance issue inside the tire or is it more than that? I just got my 24's with 275/25/24's mounted and I totally forgot about the sensors.

[DarkFury]

I just bought a set of 4 TPMs off of eBay (brand new) for $100 plus $8 shipping.

They just came in today... and will go into my new wheels. If anyone is interested in the seller, then go check out this eBay listing

[smoove7410]

I am sorry, but I am still a little foggy as to what will happen if I don't run new TPM sensors? Will it just show up as a check engine light, or just not give me the tire pressure? thanks

[kenm]

Originally Posted by smoove7410

I am sorry, but I am still a little foggy as to what will happen if I don't run new TPM sensors? Will it just show up as a check engine light, or just not give me the tire pressure? thanks

You will get a display on your left side of your dash with what kinda looks like the bottom cut away of a tire that is low and a dinging from the dash that you can not disable, not even with a StarScan. If want to see what it is let some air out of your one of your tires below about 27 pounds and take it for a drive and you will see. It is very annoying. When I got my car one of the tires was low from the dealer but just barely, it would ding until I drove for awhile and the tire would heat up ant the pressure would increase and go away until I read the manual and increased the air pressure.

[upstate]

Originally Posted by kenm

You will get a display on your left side of your dash with what kinda looks like the bottom cut away of a tire that is low and a dinging from the dash that you can not disable, not even with a StarScan. If want to see what it is let some air out of your one of your tires below about 27 pounds and take it for a drive and you will see. It is very annoying. When I got my car one of the tires was low from the dealer but just barely, it would ding until I drove for awhile and the tire would heat up ant the pressure would increase and go away until I read the manual and increased the air pressure.

The first half of 2005 production did not have this feature so not all 300C's need to be concerned.