I was driving today from Atlanta to Mississippi. My average speed was about 80-85 mph. The trip took about 3 1/2 hours with no stops. Anyways, when I got home, I noticed that my cruise, ect snow, and ABS lights were flashing constantly. Also, my multi-information display said 'Diag Tire 21'. Has anyone had this problem before?

 

Check your tire pressures manually, for starters. I have no idea what statement "Diag Tire 21" means, however.

 

diag probably mean diagnostic. tire pressure = 21psi ???

 

I've never seen it display the actual pressure.

In fact one criticism of the Lexus TPMS system is that all it ever does is tell you "One tire is low, not saying which, or by how much"

versus even the cheapest GM cars that say exactly what the PSI in each wheel is in the display on demand.

 

I don't know what that means but the new HS250 I was drivin had each tires pressure showin on the nav screen..