How to disable TPMS

[Kurt07]

well, if your TPMS light is coming on every time it drops below 50F, it probably means that you need to add more air, because your tire pressure takes a severe hit as it gets cold out. i believe the stock threshold for the TPMS is 27psi, so you're going to need a lot more air in your tires.

Everytime this happens, the front pressure is around 30 psi and the rear is around 29 psi. I understand that the pressure will drop when the temprature does. When I checked my tire pressure yesterday morning (55-60degrees) the pressure was perfectly fine. As stated before, there are leaks in my tires and the TPMS checks out fine. I just can't believe that this worthless system is this sensitive.

If you have your pressure set at least 35 PSI, low temps are not going to drop it 8 PSI. Your tires are too low to begin with.

I set my tires at 34psi and the rear at 32psi. I really don't see a need for the TPMS.

 

[Sacrilicious]

Everytime this happens, the front pressure is around 30 psi and the rear is around 29 psi. I understand that the pressure will drop when the temprature does. When I checked my tire pressure yesterday morning (55-60degrees) the pressure was perfectly fine. As stated before, there are leaks in my tires and the TPMS checks out fine. I just can't believe that this worthless system is this sensitive.



I set my tires at 34psi and the rear at 32psi. I really don't see a need for the TPMS.

ahhh...it sounds like your TPMS threshold is set to 30psi or so. i forget how you reset to another threshold, but i think it's supposedly in our manuals or something (it will require you to lower you tire pressure to whatever you want the threshold to be, set it, then fill them back up to whatever psi you like to run at).

as for why there's a need for TPMS, it's an extra layer of protection which can save you some trouble if used correctly. if you set its threshold down to 27psi or so, it will prevent this annoyance that you have right now and allow you to find out quickly if a leak happens. that and they're required for all 2007+ cars, i think...^^;

 

[dkswim]

my sollution is to drive close to another mazda w tpms sensors installed. when on a 6 hour long trip i was close enough to the other guy and my light went out.

 

[Sacrilicious]

my sollution is to drive close to another mazda w tpms sensors installed. when on a 6 hour long trip i was close enough to the other guy and my light went out.

LOL! (rofl2)

i wonder what the dude was thinking...

 

[Kurt07]

ahhh...it sounds like your TPMS threshold is set to 30psi or so. i forget how you reset to another threshold, but i think it's supposedly in our manuals or something (it will require you to lower you tire pressure to whatever you want the threshold to be, set it, then fill them back up to whatever psi you like to run at).

as for why there's a need for TPMS, it's an extra layer of protection which can save you some trouble if used correctly. if you set its threshold down to 27psi or so, it will prevent this annoyance that you have right now and allow you to find out quickly if a leak happens. that and they're required for all 2007+ cars, i think...^^;

Thanks for the idea. I will look into it.

 

[Sacrilicious]

Thanks for the idea. I will look into it.

np...mine is definitely set to 27psi, and it really helps me out without being annoying. gl!

 

[Kurt07]

So far no luck. There is no fuse for this system. That is odd. Does anyone know where the "brain" for this system is located?

 

[Sacrilicious]

So far no luck. There is no fuse for this system. That is odd. Does anyone know where the "brain" for this system is located?

ok, so what i was thinking about was the "learn new TPMS id" procedure. i had thought that it would also allow you to reset the TPMS threshold, but this may not be true...=/ the procedure is in page 5-30 of our manual. if that doesn't work, then i bet the dealership should know...=/

 

[jjjxlr8]

So far no luck. There is no fuse for this system. That is odd. Does anyone know where the "brain" for this system is located?

You won't be able to easily disable this system. It is now a Federally mandated system and is configured so that it is NOT easily disabled.

If you find away, please share.

Good luck....you'll need it!

 

[Kurt07]

Sorry for the lack of updates. I just haven't had time to dedicate to this little project. I still need to find out where the brain of the TPMS system is located. There has to be some sort of receiver in the car to pick up the signals.

 

[jjjxlr8]

Sorry for the lack of updates. I just haven't had time to dedicate to this little project. I still need to find out where the brain of the TPMS system is located. There has to be some sort of receiver in the car to pick up the signals.

This thread contains some interesting thoughts about fooling the Controller Area Network...good luck.

http://www.rx8club.com/showthread.php?t=18784

 

[kneedragger241]

I figure the light will remind me I'm on winter wheels and not sticky summer shoes.

 

[jjjxlr8]

I figure the light will remind me I'm on winter wheels and not sticky summer shoes.

The additional torque steer will do that!

 

[Noisy Crow]

Sorry for the lack of updates. I just haven't had time to dedicate to this little project. I still need to find out where the brain of the TPMS system is located. There has to be some sort of receiver in the car to pick up the signals.

It is part of the keyless entry module. Talks to the computer in the PJB via a communication link.

 

[nhluhr]

Toyota/Lexus uses Pacific TPMS. These sensors transmit pressure info intermittently and are not triggered but tire rotation. Apparently 1st gen TPMS in Mercedes (made by Seimens) are the same. All the other Japanese (including Mazda) and domestic manufacturers use Schrader TPMS. This system is a triggered system. That's why installing the sensors in a pressured pipe or container will work for Toyotas but not Mazdas.

Schrader is a type of valve. Every production car from the last 30 years has had Schrader valves.

The brand of TPMS in the Mazda and most other cars now are manufactured by Beru, a company that first developed miniaturized sensors for use on F1 cars.

 

[red headz]

anyone got new info yet?

m.

 

[PCspeed3]

accessport or buy TPMS

 

[dkswim]

ummm how is the AP going to solve that???

 

[davens]

If the light bothers any one that much, why not pull the gauge cluster and unplug the bulb? I mean, if there's no way to turn it off or trick the TPMS, remove its means of output/notification.
Yes, its a little ghetto, but it beats tape.

 

[Rotus8]

If the light bothers any one that much, why not pull the gauge cluster and unplug the bulb? I mean, if there's no way to turn it off or trick the TPMS, remove its means of output/notification.
Yes, its a little ghetto, but it beats tape.

It's a surface mount LED soldered to the cluster PCB. Not a simple unplug.