I have an 07 Tundra SR5 with TRD package (includes alloy wheels) that I purchased in April 07. I've had it almost 14 months and it's been a great truck.
I noticed the tire pressure light on the dash come on. I went to a service station and personally began to test the air pressure and refill as necessary. I got to the right front passenger tire and found the treads on the value stem were cracked. If you try to put air in the tire, it goes out the crack instead of into the tire. I think the tire is a little low, but it's not leaking from the crack.
I just got back from the dealer. The dealer is quoting the part at $105.00, plus tax, and the labor at $143.93. For an unbelievable total of $278.68. It's not covered under the factory warranty which I don't understand since I have never put air in the tires before.
What do y'all think?
Based on a diagram I found on this site, why can't they just change the "valve core"?
A nearby mechanic shop that does our Company's vehicles said they can change it if I buy the parts. However, will the sensor get "re-linked" to the computer, or will I still be screwed and need to go to the dealer?
Thanks for all your comments.
UncleLA

Sparks has them in sets of 4. You might try e-mailing Mark at Sparks and see if they sell just 1 of them.

Sparks Toyota

Supposedly, any TPMS from any tire shop will work with the tundra system. Some of them are cheaper, but I don't know how good they are. ALL TPMS are only rated to last a few years and then they need to be replaced. I want to say 3-5 years if I recall correctly. But no matter what, you have to get the dealer to program the computer in the truck.

If you have someone else install the new TPMS in the wheel, be sure to write down the number on the new sensor BEFORE it goes in the wheel. Then take the old sensor (or at least the numbers off of it) and give both sets of numbers to the service guy at the dealership. They will need to write down the 4 numbers already in the computer before they clear it and then swap out the new number with the number being replaced when they enter all 4 codes again. To change one set of numbers, they have to enter all 4 sensor numbers. If they don't write down the old numbers before it is cleared, then they have to break down the other 3 tires to get the sensor numbers. Maybe the dealer is trying to charge for breaking down all 4 wheels to get all the sensor numbers.

If you want to try to just find the cracked part, you could see if you can find it here:
Conicelli Parts Center

I think it was TundraScout who tried something kinda similar but found it couldn't be done. Not sure I remember what he was trying to do.

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