# Tire Pressure Light turns on **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** scion, tc\ **Created:** [May 24, 2010, 1:09am UTC](https://community.cartalk.com/t/tire-pressure-light-turns-on/49285 "2010-05-24T01:09:20Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![denver\_lewis](https://avatars.discourse-cdn.com/v4/letter/d/ee59a6/32.png) [@denver\_lewis](https://community.cartalk.com/u/denver_lewis)\ **Post date:** [May 24, 2010, 1:09am UTC](https://community.cartalk.com/t/tire-pressure-light-turns-on/49285/1 "2010-05-24T01:09:20Z")
Hi, I changed all 4 tires about 2 weeks ago on my 2005 scion tc. A few days later the tire pressure indicator came on as I was driving. I checked the pressure using my pressure gauge, in all four tires and it was fine. Just to be on the safe side I took it in to the store that changed the tires. They checked for nails/leaks etc and said that all was fine and reset the indicator. A day later the indicator has come on again. Any clues as to what must have gone wrong? Thanks. Denver ---
**Author:** ![edb1961](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/edb1961/32/122_2.png) [@edb1961](https://community.cartalk.com/u/edb1961)\ **Post date:** [May 24, 2010, 11:26am UTC](https://community.cartalk.com/t/tire-pressure-light-turns-on/49285/2 "2010-05-24T11:26:14Z")
The TPMS has to be reset after a tire change/rotation on Toyotas. My wife’s 2006 Sienna has a button under the dash to reset the system. Check the Owner’s Manual for the procedure, perhaps the dealer did not reset it correctly. Ed B. ---
**Author:** ![mshugna](https://avatars.discourse-cdn.com/v4/letter/m/ce73a5/32.png) [@mshugna](https://community.cartalk.com/u/mshugna)\ **Post date:** [May 24, 2010, 11:28am UTC](https://community.cartalk.com/t/tire-pressure-light-turns-on/49285/3 "2010-05-24T11:28:44Z")
full sized spare? check it.