TPM lights up yellow on all 4's

Yesterday the TPM indicator lit yellow for the left front tire on my 2010 Li. Then last last night all 4 indicators lit up. I'm in NY and it was around 15 degrees at the time. I stopped using the car until I can take it back for a service call. It's kind of odd that after 2K mi it would have 1-4 flat tires. Anyone know why this is happening?

Originally Posted by b7series

Yesterday the TPM indicator lit yellow for the left front tire on my 2010 Li. Then last last night all 4 indicators lit up. I'm in NY and it was around 15 degrees at the time. I stopped using the car until I can take it back for a service call. It's kind of odd that after 2K mi it would have 1-4 flat tires. Anyone know why this is happening?

According to the TireRack, tire pressure will drop 1 PSI for each drop of 10 degrees Fahrenheit. If that 15 degree temperature is a lot lower than when the TPMS was set, that could account for the TPMS warning light coming on.

http://www.tirerack.com/tires/tirete....jsp?techid=73

Originally Posted by b7series

Yesterday the TPM indicator lit yellow for the left front tire on my 2010 Li. Then last last night all 4 indicators lit up. I'm in NY and it was around 15 degrees at the time. I stopped using the car until I can take it back for a service call. It's kind of odd that after 2K mi it would have 1-4 flat tires. Anyone know why this is happening?

Get a pressure gauge and check your pressure. A yellow light doesn't have to mean a flat tire. It's probably just indicating low tire pressure because of the temperature as already stated.

dj

thanks. It's probably not possible to look at the tire to tell whether there's a flat or not?

Its very hard to tell a flat on runflat tires. Its probably just the presure dropping form the cold. Get a pressure gauge and check your pressure