The weather has turned colder.As a result, tire pressure decreases. Check your pressure - use your owner's manual to determine the correct pressure, and check the pressure when the tires are 'cold' (i.e. not after having been driven).

 

thanks Pat's dad!

 

Started my car and the dreaded tire symbol & bong came on - got out, looked around (nothing looked flat), checked the pressure and all were down to 26lb from normal 35. We'd gone from 76º the day before to 32º that night. Luckily I have a small compressor .