ggreen29

A diagram of the whole car on page 5-23 shows little blocks attached to the valve stems. IF the drawing is accurate AND to scale, the monitoring/sending units look like they're approx 1x1x2inches. Other than that skimpy drawing there's no info on these devices. Perhaps someone can dig up some info from the tech CD.

On the plus side, as these will become mandatory on new cars, they will be standardized. Until then I suspect it'll be a crap shoot.

From pgs 5-26 & 5-27 of the Owner's Manual:

"Each tire pressure sensor has a unique ID signal code. The signal code must be registered with the TPMS before it can work. The easiest way to do it is to have an Authorized Mazda Dealer change your tire and complete ID signal code registration."

"When changing tires yourself
If you or someone else changes tires, you or someone else can also undertake the steps for the TPMS to complete the ID signal code registration.
1. After tires have been changed, turn the ignition switch to the ON position, then turn it back to the ACC or LOCK position.
2. Wait for about 15 minutes.
3. After about 15 minutes, drive the vehicle at a speed of at least 20kph (12mph) for several minutes and the tire pressure sensor ID signal code will be registered automatically."

"If the vehicle is driven within about 15 minutes of changing tires, the [TPMS] warning light will flash because the sensor ID signal code would not have been registered. If this happens, park the vehicle for about 15 minutes, after which the sensor ID signal code will register upon driving the vehicle for several minutes."

"When replacing/repairing the tires or wheels or both, have the work done by an Authorized Mazda Dealer, or the tire pressure sensors may be damaged."

"The wheels equipped on your Mazda are specially designed for installation of the tire pressure sensors. Do not use non-genuine wheels, otherwise it may not be possible to install the tire pressure sensors."

"When having a tire or wheel or both replaced, the following types of tire pressure sensor installation are possible.
--The tire pressure sensor is removed from the old wheel and installed to the new one.
--The same tire pressure sensor is used with the same wheel. Only the tire is replaced.
--A new tire pressure sensor is installed to a new wheel."

mdmaclean

I was at my dealer today, asking about winter tire packages. They told me that the valve stems with pressure sensors (part FE01-37-140A) were $110.09CDN each (about $70USD).

The letter after the "14" in the part number was hard to read, and "0" might not be correct.

This does add to the cost of a winter tire package. It makes me consider Blizzak LM-22 215/45R18's on the existing wheels, and change them spring and fall.

Gord96BRG

Unless, of course, you have a Canadian car which doesn't have the TPMS at all! Yes, the Canadian manual includes all the TPMS info, but has a small * which says "optional on some cars" or something vague like that.

Regards,
Gordon