I have a 2009 LS460 which continues to have nuisance alerts on the TPMS. I have judicially monitored tire pressue and always maintain them within spec. The Dash Display for the TPMS never shows an accurate tire pressure. I have had this to a dealer several times and emailed other dealers for opinion. The first response is always to try and sell me a nitrogen tire fill for a bunch of bucks and try to convince me this will solve the problem. This makes no sense to me. The last time I took the car in they claimed they recalibrated the computer and assured me I would not have any alerts unless the pressurs dropped below 31psi. Well that lasted about two weeks then started getting alerts again. The actual tire pressure on all tires was at 34 to 36 psi. I filled all tires to 35 and the spare to 37 and still get alerts on three of the tires. Any suggestions?
Thanks
Don
