mbr439a

I have a 2004 Lexus LS430 with 109000 miles on it. About 4 months ago my warning light indication I had low tire pressur came on and will not go off despite checking all my tire and spare. All are registering full according to the tire pressure gage. Anyone have any suggestions??

Gronemus

Look at the PDF files posted in post #11 here on how to re-initialize your system...

linky

Jabberwock

If you have the LS430 manual please very carefully read the section that has description and instructions on TPMS initialization and reset.

Also search "TPMS" and "tire pressure warning" on this forum and you should get several threads discussing how the ABS based TPMS works on all LS430s. Hint - it has absolutely nothing to do with air pressure in your spare. In fact you could mount solid rubber wheels with zero air in them and the TPMS in the LS would work just fine.