2007 - Air Pressure Light On

'Ello--

I have a 2007 Tacoma TRD SR5 Off-Road. I have after market wheels and tires on it. Recently, the tire pressure light came on, so I swung into a quickstop and checked the pressure; 30-35PSI on 50PSI tires. I filled them up to 45PSI all the way around, and used the switch in the truck to reset the pressure system. Still on, all tires have the same PSI, but the system won't go off.

I have 35k miles on the truck. If this is broken, can I get a warranty repair? Should I try 50PSI all the way around and see if it works?

-Will

 

What is the tire recommending on the pressure?

I would run it at that and if it's not going off, take it to the dealer.

 

Did you swap out the sensors when you got the aftermarkets?

Also the spare has a sensor up until the 09's so don't forget to check it

 

Check your spare. 2007s had a sensor in there too. I had this issue with my 08. Make sure all 5 tires are the same pressure (mine are at 32 psi), if the light doesn't go off, use the reset button under the steering column.

 

And when you take your spare out to check it, flip it over when you put it back, so next time you don't have to drop it down.

 

My after markets state to have them at 50PSI. For winter driving, should I drop that down? Also, if my spare is stock, and at 32PSI, but my after markets are at 50PSI, will that throw off the sensors and cause the light in the dash to pop?

I did use the reset button, no change, the light blinks and then it stays on.

 

All 5 of your tire pressures need to be the same or the light will come on. Toyota wised up last year and took the spare tire sensor out to avoid this problem in 09s and up. AFTER all of your pressures are set, the light should go out in a few minutes. If it does not, then try the reset button. If that doesn't work, you may have a bad sensor. Sometimes the sensors get damaged during installation of new tires. Needless to say, I hate tire pressure monitoring systems.

 

check the spare...thats what my issue was...

 

^^what he said

 

Thanks for the correction. Air pressure adjustment to the spare should fix the op's problem.

 

my light has been on solid for about 1 month now and ive tried everything. I checked all my tires and the spare. All have the same PSI and ive even gone through using the reset button. Any thoughts on whats keeping the light on? or a way besides the black tape mod to get the light to go out?

 

What size tires are you running?

35-36 psi is probably the top end of what you should be running unless you're hauling a lot of stuff (the 50 psi indicated by the tires is most likely an absolute max inflation for the rears on a fully loaded (approx 1600-1800 lb cargo in the bed) 1-ton truck. For driving on snow you'd probably want to back it off to more like 29-32 psi, although some of this would depend on your truck configuration and tire size. Running 45-50 psi in snow is pretty much lunacy unless you're close to max GVW (and if you're running that heavy on ice be very careful about stopping distances).

The 2010 manual reccomends 30 psi in the front and 29 psi in the back and should be the same for the 2007s (confirm this with the sticker on the door pillar), so the TPMS light probably shouldn't come on until around 25-27 psi on the low side. Some TPMS systems are set to warn when pressure is too high as well as too low. Definitely check the pressure on the spare and make sure your sensors are installed in the aftermarket rims.

 

Toyota refers to this problem in the manual, and suggests causes and RX; one possible problem is cold temperatures. Don't know about Oregon, but up here in Canada it can be a problem. I drove from coastal BC up through the Rockies to Calgary, Alberta, in early November. Bloody cold, I thought, with extreme snow/icy road conditions; light came on on the way up into the alpine region and didn't go off until I returned to the coast, reset the tire pressures and reset the system. Later, I switched back to reular tires and repeated the operation; still later, with first snow here, in December, I switched back to snow tires and did it all again. It has worked as per instructions, each time.