I know this light means tire pressure is low because I had an 05 Coupe and an 06 M35, but this light turned on right after I got my car back from the dealer for an oil change. I figured ah the tire pressure is just low so I will go stop by a gas station and fill it up. The tires say max of 51psi so I checked all four tires and they are around 40-43psi each so none of them were that low. I just made them all around 43 to even it out but the light still doesnt turn off. Do you guys think maybe the tires just needs more air or should I go to the dealer and see whats going on?

 

sounds strange, but I've heard of this before...make sure you have washer fluid in your washer fluid resevoir. Lisa thought for the longest time her tires were low, until I told her otherwise. just a suggestion.

 

Hmm okay ill check that out in about an hour or so when I get off work.

 

Hope it helps, if not, you may have to go to the factory to get your sensor reset.

 

43 is pretty high - you ought to reset your tire pressure to spec.

 

does it say 33psi??? thats what i remember from chart on the driver side

 

I had a TPM go bad, dealer had to replace it. Same deal - light was on, tire pressure was fine.

 

I had that happening to me twice in a week. I did what you did as well, but I figure it out...the sensor turns out to be VERY sensitive. So, what I did afterwards was to really tighten/screw the caps on, then it has not happened again. That was at least 3/4 months ago.

This is my own opinion...I recommend you to verify the pressure before tightening.

 

Ok tried the windshield fluid didnt work.

Hmm that could be it too.

Okay. I will try retightening the caps. Thanks everyone.

 

It's probably the TPMS because your tires are over inflated, but to be sure which one of these indicators is lit up:

 

The top one.

 

Does the light flash for 1 minute when you start the car? If it does the TPMS might be malfunctioning, otherwise adjust your tires to the recommended pressure of 33psi and make sure the caps are tight. I get the TPMS warning every once in a while on cold mornings (or when there's a screw in my $300 winter tire ).

 

The light doesnt flash it jsut stays on constantly. I will try lowering the pressure and putting the caps on tightly. I know on the m35 and g35coupe the light would turn on if the tire pressure was under 28psi and 26psi or so.

 

I had that same light come on and my tire pressures were at spec...33. When I took my car in for the oil change I told the dealer about this warning light. They said the tire pressure monitors weren't 'registered.' What ever that means. They 'registered' the tire pressure monitors and the warning light went off.

 

Ah okay I guess its back to the dealer then. I have to go for the FOB replacement anyways.