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      12-18-2013, 08:23 PM   #1
jjax3
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Tire pressure warning in snow?

Anyone get the tire pressure warning when driving in heavy snow?

I got it today and chalked it up to the sensors acting wonky in the snow. Haven't checked the actual pressures since, but visibly fine.
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      12-18-2013, 08:34 PM   #2
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When the temperature drops and the pressure is more than 25 percent less that the previous temperature the warning will come on.
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      12-18-2013, 09:14 PM   #3
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Canada uses an indirect TPMS system, which measures differences in wheel rotation speed. Please do check the pressure on all 4 tires. There may be other reasons for differences in wheel rotation speed, but tire pressure is the most obvious.
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      12-18-2013, 11:19 PM   #4
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This happened to me also. This is pretty common in the winter. You can google low tire pressure in cold weather....there's a lot written about it.
Basically I'd recommend testing your tire pressure. I bet one tire is a bit low. When the temps drop, so does the pressure in your tire. If it dips below the TPMS threshold, you will get that alarm. I think they recommend 32 PSI for my tires, so whatever the threshold is (let's say 28 PSI), if it dips below 28, I'll get an alarm. Mine actually told me which tire it was. Once I added air to it, the alarm cleared.
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      12-19-2013, 02:24 AM   #5
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Actually my service adviser told me that i should have 38 psi in the fronts and 44 psi in the rears for the m sport 19 inch rims
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      12-19-2013, 08:25 AM   #6
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Quote:
Originally Posted by jjax3 View Post
Anyone get the tire pressure warning when driving in heavy snow?

I got it today and chalked it up to the sensors acting wonky in the snow. Haven't checked the actual pressures since, but visibly fine.
So every time you get a warning in your car, you blame the sensor?
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      12-19-2013, 10:31 AM   #7
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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.
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      12-19-2013, 12:13 PM   #8
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I had this when I picked up my car. It had 16k and was sitting inside dealership for a few days

Came on after driving for 10 mins. Went back to dealership and the rest sensors. Been fine since.
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      12-19-2013, 07:16 PM   #9
jjax3
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Quote:
Originally Posted by The X Men View Post
So every time you get a warning in your car, you blame the sensor?
Well, I was driving in 6in of snow at 50 km/hr in a blizzard on a highway. Which made me assume.



Checked the pressures, was 2psi lower in one but still within proper levels. So i topped it up and had to reset the warning myself.
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