Had a flat tire on the highway for the first time in 20 years...
05-07-20, 04:19 PM
#106
Pole Position
Yes, TPMS was around for years before it was required by law, not unlike backup cameras. New technologies, no matter how good, always go through a process before being adopted as law. Manufacturers always resist, and I'm not sure why, as they simply pass the costs down to the consumer. Maybe they feel it's more profitable to have an option they can charge extra for as opposed to building the cost into the base price?
05-07-20, 05:55 PM
#107
Lexus Fanatic
Thread Starter
Are you sure your dads 99 Sienna has TPMS? None of my Toyota products from that period up to 2010 had it.
05-07-20, 06:09 PM
#108
Lexus Fanatic
05-07-20, 06:31 PM
#109
Lexus Fanatic
Thread Starter
You know what it is, it’s because you’re in Canada. My LS400 didn’t have it, nor did the LS430. Nor did my 2003 ES. It debuted here on the 2007 models.
05-07-20, 07:08 PM
#111
Lexus Test Driver
05-07-20, 07:20 PM
#112
Lexus Fanatic
Thread Starter
05-08-20, 06:02 AM
#113
Lexus Champion
My 2006 Scion tC had a pressure warning system, but it was not by sensors in the tires, but rather differences in rolling diameters. Kind of a rudimentary setup, but it worked well enough.
05-08-20, 06:19 AM
#114
Lexus Champion
I had an Audi Q5 and then an A6 and both of them had the same type of system. It worked fine in both vehicles, Not much in the way of details though.
05-08-20, 06:52 AM
#115
Lexus Fanatic
iTrader: (20)
115 posts about a flat tire. 
05-08-20, 07:12 AM
#116
Lexus Fanatic
Thread Starter
Hey, we don't have much else to keep us busy nowadays LOL
05-08-20, 07:29 AM
#117
drives cars
05-08-20, 04:39 PM
#118
Pole Position
My son's 2006 Toyota Matrix has this type of system as well. My hunch is it isn't as good as wheel pressure sensors as it can be fooled by unevenly worn tires. It is integrated into the antilock/antiskid system. I assume the better system, the TPMS, is the only one acceptable to the NHTSA for meeting the requirements of the 2007 law.
05-08-20, 05:11 PM
#119
Lexus Fanatic
05-08-20, 06:57 PM
#120
Lexus Fanatic
Thread Starter
My son's 2006 Toyota Matrix has this type of system as well. My hunch is it isn't as good as wheel pressure sensors as it can be fooled by unevenly worn tires. It is integrated into the antilock/antiskid system. I assume the better system, the TPMS, is the only one acceptable to the NHTSA for meeting the requirements of the 2007 law.
