Tire Pressure Monitor TSB

T

toto

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A new TSB just came out that explains the Tire Pressure Monitoring System (TPMS) on all Toyota products, and also talks about how to troubleshoot the system.
It's PG004-06, dated 11/28/2006.

http://www.alldata.com/tsb/Toyota/1164700800000_1165824000000_PG004-06/index.html

Note that the 4Runner got the short end of the stick on page 5. It appears that the 4Runner is the only vehicle that doesn't have a "SET" button that allows you to set the pressure at which the light comes on. We're stuck with the default of 27 psi! Also note that the Land Cruiser allows two settings for two sets of wheels! I've seen the folks on ClubLexus talking about the SET button - now I know what they mean.
 
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Thanks for posting the TSB. As a new owner I am still unsure about tire rotations even after reading the TSB. If I do a 4 tire rotation, just swapping fronts and rears, are the sensors supposed to be reprogrammed? If I leave all 4 tires about the same pressure, sounds like I would not have any problems with the TPS. Or would I? Thanks in advance.
 
Rotating the tires doesn't affect the TPMS. Toyota's system doesn't actually know which tire is mounted where.

You have 5 sensors - the spare has one too.

If the light were to come on and stay on solid, then one of the 5 tires has fallen below 27 psi.

If the light keeps blinking, there's some other problem with the system.

So you'll be fine as long as you keep the pressure above 27 psi.
And keep in mind that in the winter, the cold air outside will make the pressure fall. So if you've got 30 psi in a nice warm garage, they might drop enough to turn the light on after they've been outside for a while.
 
Very informative posts.

The reason I found this thread is because my 1-month-old 2007 4Runner suddenly started showing a *blinking* tire pressure warning light tonight.

All tire pressures checked out normal, so this appears to be some sort of malfunction in the monitoring system itself???

Do I need to take it back to the dealer?

As a side note, the dealer exchanged tires on the vehicle (switched Bridgestones for Michelins) prior to my purchase but the pressure warning light has not come on or blinked for over 1200 miles -- until now.

Any comments or advice would be appreciated. Thanks.

Al
 
The TPMS will register a trouble code when the light blinks. Your dealer can diagnose it very quickly, or you might even be able to find out what it is if you can get your hands on an OBD II code reader. Your local auto parts store might read it for free if you ask. The TPMS codes are C21xx. If you get a code, post it here and I'll look it up.

One of the reasons the light will blink is if the system stops receiving data from one of the transmitters. Maybe something happened to one when the tires were changed. But here's a horrible thought - make sure your spare is still there! The TPMS doubles as a spare tire theft detector.

If you've got 5 wheels, then the next best thing to do is check the trouble code.
 
Does anyone know if the sensors can be swapped between vehicle models? For example, could a Sequoia sensor be used in a 4r? Alternatively, if a wheel/tire combo with sensors were installed into a 4r, from a different vehicle model, would the sensors work? I cant find a p/n for sensors at partznet other than for 4r's.
 
Doing some searching on the 'net, I've found that Toyota has multiple part numbers for the sensor. You have to have the right one for your kind of wheel (steel vs. alloy), and also the correct angle on the valve stem (20 degrees, 40 degrees, etc.) So the sensor is physically matched to the wheel.

I can't find anything definitive about whether or not a set of wheels and sensors sold with one vehicle model would work on another model, but I'd be surprised if they didn't work. It would be silly for Toyota to make them different, but then again, cars don't have to make sense!
 
Yes, my friend asked me to help her with her tire pressure sensor monitor in her Lexus. There's a short procedure in the owner's manual to set the tire pressure level and enable the system.

What I really like is that you can turn the system off if you don't want to use it. Seems much easier than pulling apart the instrument cluster to remove the bulb (or LED, if that's what they're using now)
 
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