Did anyone find out how to turn off the TPMS? or maybe cut off the wire??

There were a few posts out there about disabling the TPMS system, but last I saw there was no simple solution. I took a quick look at the TPMS myself. If you unplug the TPMS module (in the center console above the radio), the TPMS dashboard warning light will flash continuously.

Cutting the wire will not work, and could mess up the CAN network the car uses to communicate between the different systems. You would be better off unplugging the TPMS module.

One person suggested cutting the connection to the TPMS indicator light in the dashboard gauge, but it still may beep at you anyway.

My guess is there may be a way to reprogram the dashboard to not flash the warning light and beep, but I don't know if even the dealer can do that.

The only other option would be to create a replacement TPMS module that sends out the "I'm OK" message every few seconds so that the dashboard does not light the TPMS error indicator or beep. (I was able to simulate this solution with my laptop and a OBD2 CAN interface, but that is not a viable, or cheap solution.)

Regards.

As of now it blinks continuously when I hit a bump, it wont stop til I shut the car off. I think cutting the indicator light would work hmmm I just hope I cut the right one grrr

i don't have my tpms installed, the light is on, but it's a solid light, it doesn't bother me anymore than the light from having my headlights on.

I dont have my tpms installed either but when I hit a bump thats when it comes on. It doesnt really bother me but I would want it off.

weird. mine doesn't do anything besides light up, and stay lit up. it doesn't flash or do anything else.

Mine flashes after I drive x amount of miles.
I don't even notice it anymore.

I'm thinking this is possible..The dealer would need to inhale the info from the PCM and re-enter the as built as TPMS disabled..

There is a MRI addressing the issue that the TPMS is a forced entry to the PCM.

I gotta find a cool dealer..

:o

......I gotta find a cool dealer..

:o

Find one that won't be phased by the NHTSA enforcement and tire failure related lawsuit WARNING at the top of page 6: http://www.finishlineperformance.com/rx8/docs/02-004-04.html

I know..I know

It was a sad attempt at being sarcastic..

I'm just telling you it is possible to fool the car..

there is an easy fix.

black tape. ;)

there is an easy fix.

black tape. ;)

Some may consider that to be a tacky fix :).

i agree - i would never do that myself - I had heard someone on this board doing that though.

can someone get a schematic of the sensor?

Mazda Repair Information

--------------------------------------------------------------------------------

TPMS MODULES REQUIRE FORCED AS-BUILT ENTRY ON PMI
Applicable Models
Model Starting S/N Ending S/N
2004 MAZDA3 00000000 ZZZZZZZZ
2004 RX8 00000000 ZZZZZZZZ

WDS will not perform normal PMI (inhale/exhale) of configuration data on TPMS modules. When performing PMI during replacement of a TPMS moduleyou will be forced to enter as-built data into the new module. Model Module Forced As-built? (as of WDS B31) __________________________________________________ ______________________Mazda 6 IC/HEC NO ABS NO RX-8 IC/HEC NO TPMS YES RKE NO DSC/ABS NO RCM NO Mazda 3 IC/HEC NO TPMS YES EHPAS NO RCM NO (Vin Entry Screen also with As-built) ABS NO (Vin Entry Screen also with As-built) PJB NO (Vin Entry Screen also with As-built) __________________________________________________ ______________________

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The way I read this..if the dealer inhales the data from the PCM then forgets to re-enter the TPMS data the light should stay off, and the system will not see it as missing.

anyone want to bet the dealerships don't want the liability of disabling safety equipment? :)

The way I read this..if the dealer inhales the data from the PCM then forgets to re-enter the TPMS data the light should stay off, and the system will not see it as missing.Now THAT is interesting! I wonder if there is any dealership with a WDS that'd be willing to try this. Also wonder if the headlight on indicator could be turned off in a similar way....?

so can anyone get a schematic of the sensor?

All I have access to is a functional schematic of the system..not the internals of the transmitter itself.

ahh... if anyone wants to throw one away, give it to me and i'll see if i can figure it out.

why would you want to disable the tpms??

Some members have wheel and tire packages that will not accept the TPMS sensors.

This results in a constant TPMS light on the dash.

Not to mention the fact that the damn things are too sensitive to temperature fluctuations.

I've put my TPMS in my new chrome rims and have them in the garage now for the winter. I have my winter rims on now without TPMS and the light doesn't come on. Kinda wierd but im wondering if it senses the other rims on start up since they are close and since they never give a "hey im bad signal" it stays off. Just an observation I've had.

Whoa..have you ever had you car in the shop for a PCM issue?

The sensors are supposed to send a constant RF signal to the module.

Nope never had it in shop for issue...and the TPMS work cause one of the valve stems was leaking and the light came on on my other rims.

:confused: Oh...ok

I'm sure the range on the TPMS transmitters covers the start up question.

How can your TPMS light come on with no sensors in the winter set?

The light came on with my chromed set. But in theory it should come on in my winter set if it is malfunctioning ( aka there not there ) and it doesn't. But im not worried im perfectly happy with the light not showing.

I would love to hook the WDS to your car..

You're in Indy?

Might be time for a road trip..

i know this is silly but what is tpms? anyone please

Tire pressure monitoring system.

Actually im in lafayette snap-on and I'd be up for testing stuff.

:confused: Oh...ok

I'm sure the range on the TPMS transmitters covers the start up question.

How can your TPMS light come on with no sensors in the winter set?

I dont have sensors on my after market wheels/tires and still the TPMS lights comes on. I think its becuz the internal sensor senses that the sensors are gone so thats why it does it.

I guess I wrote that incorrectly..

What I intended to write was... how can his light NOT come on since he has his winter wheel/tire combo.

You can't switch the TPMS off by modifying the as-built data. A Mazda engineer in the factory in Hiroshima with special equipment can, but you cannot do it in the field unfortunately (not easily, if you have lots of time and programming skill though, go for it!). If Mazda decided that they wanted to make this a programmable feature, then it is sometimes possible for them to add a 'programmable parameter'. These are things like wheel/brake size, that change depending on the spec of the vehicle. But for TPMS, which is a regulated item, I doubt that this will happen.

I would think your best bet would be to suppress the signal from the TPMS module to the warning light. If someone could find which wire from the module sends what type of signal to the warning lamp, maybe we can figure a way of blocking that signal. An oscilloscope shot of the signal when the warning lamp is on (and off, for comparison) would be useful.

Cheers.

Not to mention the fact that the damn things are too sensitive to temperature fluctuations.

Too sensitive - how so?

My TPMS light has never come on in 14+ months of owning the car and I have two sets of sensor. The TPMS warning light is supposed to come on if pressure is less than 26 PSI or greater than 49 PSI.

I understand that Mazda can adjust the range - so if your sensors are out of whack, see what the dealer can do.

Would this be possible to fabricate, a TPMS transmitter? The TPMS system works by transmitting a low level radio frequency to the main unit in the dash right? Can something be made that uses the cigarette lighter as a power source that transmits four “ the tires are at 34 PSI” dummy signals?

Would this be possible to fabricate, a TPMS transmitter? The TPMS system works by transmitting a low level radio frequency to the main unit in the dash right? Can something be made that uses the cigarette lighter as a power source that transmits four “ the tires are at 34 PSI” dummy signals?

I was thinking the same thing until I read that the sensors measure and transmit info on tire pressure/temp AND accelleration. ( although I can't tell if the module just looks for a difference in the 4)

Following your thought maybe we need to find a way pick up the RF and try to duplicate it.

FYI the pressure is not simply a pass/fail scenario, the wds actually displays the pressure in each tire.