Since he is in Canada it doesn't have an actual pressure sensor, it uses the ABS sensors to determine low pressure by a difference in rotational speed. It possible that when driving in heavy snow you are getting snow build up on one of your tires making the outside circumference a little larger which would throw off the speed sensor.
__________________
2012 X3 35i | Deep Sea Blue | Oyster |
Packages | Sports | Cold Weather | Cold Weather 2 | Premium | Technology | Premium Sound
|