This "!" just lit up on my dash and made a beeping noise. Does anyone know what this means?

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I think that is your low tire pressure sensor.
Syko

I'm pretty sure that it isn't the tire pressure warning system because I believe if yur tire pressure is low it tells via the navigation on the dash you might try looking at the first few pages of the manual, I hav that light on my loner g 35 but I just ignore.

I recieved the "!" on the NAV when the glass hatch was not closed properly.

YES, it is the tire pressure light. Mine just came on after a MONTH of driving around WITHOUT the sensors! :eek: I took them out when I put my new rims on.