Check the spare?
Pull the bulb, or fuse, if it is a dedicated fuse?

 

Dealer swapped out the old instrumentation for a new one. Immediately noticed that the Tire Pressure light came on.

Rubber valve stems (in the winter tires) are a clue. Are you sure your trim level has TPMS sensors? Is it possible the new gauges came from a different model/year and the light is on because sensor signals can't be found? The low pressure light 'should' have come on every time you started the car (pre gauge swap) so you'd have noticed it.

Your owner's manual should tell you where the reset button is located (usually on the dash below the steering wheel or in the glove box). If you never had TPMS sensors just remove the light bulb.

If you know you have sensors in your summer wheels there's a pretty good chance after 11 years the batteries are dead. Try re-registering them using Techstream (or have the dealer/tire shop do it). If they don't show up in the program they're dead and need replacement. Again, just remove the light bulb.

Cheers!

 

Rubber valve stems (in the winter tires) are a clue. Are you sure your trim level has TPMS sensors? Is it possible the new gauges came from a different model/year and the light is on because sensor signals can't be found?

I think this is the heart of the issue. I found a 2008 Matrix manual online that showed where the TPMS reset switch should be, if I had one (see attached image). But I don't have the re-set switch. The four slots on the dash to the left of the steering wheel are:

Glass (to open the back hatch glass)
A coin holder
Security light
Blank

I guess that means my car is not equipped with the tire pressure sensors, because if it was so equipped then the car would have the re-set button.

Your observation that the new gauges came from a different model/year is the most logical explanation. Thanks for your thoughts.

Thanks to all who replied on this thread, but I think I am going to use the Red Green technique of using duct tape to cover up the light. I'm not a car guy, so the thought of trying to remove the bulb or do something via the fuse panel seems way beyond my abilities. I'll cover up the light, and do what I've done every couple of months over 11 years of ownership of the car: check the tire pressure with a manual tire pressure gauge.

 

Check air pressure.

Reset :

Hold tpms button while stopped.

Light will flash 3x and go out.

I don't think the tpms is tied to the spare tire doesn't hurt to check though.

 

My '08 Tacoma had a sensor in the spare. I think they did that from '07-'09.

Rubber valve stems (in the winter tires) are a clue.

A clue, but no longer definitive. I had my sensors replaced when I put on a new set of tires, the replacements have rubber stems.

Check the spare?
Pull the bulb, or fuse, if it is a dedicated fuse?

Must harder to squelch the light than that. Some models can be disabled by applying a ground to one of the pins on the TPMS module, some require a TTL +5v. Pull the fuse or unplug the TPMS box and the ECU will hold the light. The dash light is an LED.
Easier to put a picture of one of the kids over the light.


Honestly... I never had any luck using the reset procedure on my Tacoma. I bought it used from a GM dealer and the light was on from day-1. I took it to America's Tire and they took care of it at no charge in 15 minutes. Apparently, one of the sensors had become unregistered.
But on an '08 Matrix, that's 10 years on the batteries in the sensors if they are OEM. I'd put $5 on one or more of them being dead.

Repeated flashing for a minute or so after startup followed by a steady light indicates a problem with the sensor(s) or TPMS module itself. Steady-On after startup indicates a low tire.

 

Wife's '04 Rav4 had that type of reset switch.
That is an indirect TPMS that reads from the ABS sensors. Hers was horrible... would never reset.

If you don't have that button, look under the edge of the dash. My Tacoma had one near the column, '16 Corolla and '15 Rav it's in the glove box.

 

My 98 Sienna has a TPMS, does it also determine the pressure by comparing the wheel rotations versus transponders in the wheels (which I friggin hate). Heck my wife is a TPMS, I swear she can tell 2 PSI difference in tire pressure. I especially hate the systems that tell you there is TO MUCH pressure in your tires, since I like to lower my rolling resistance as much as practical by inflating my tires to sidewall max (all I'll admit).

 

I'm not sure if the spare tire has a TPMS sensor, but it does need to be inflated to 60 psi cold.

 

I would ask America's tire to inspect the sensors. They can reprogram them to your vehicle.

 

Where is this 2008 toyota matrix tire pressure TPMS location ?? Please.

 

If you have to Red Green it after all else fails..............black electrical tape is the best assuming a black background!!

 

this might be too late but on the right side of the driver’s seat, by the right knee, there should be a button just past the plastic lip. I have a 2009 Matrix XR AWD in Canada.