Has anybody had any issues with the reverse sensors in the cold weather? Every once in a while when I put it in reverse I get a solid tone from it, as if I'm backed right up to something. It's not a build up of road salt or anything, as I've wiped off the sensors and it will still do it. Only seems to happen in the extreme cold.

Another thing thta happens in the very cold weather (although it doesn't happen that much) is the thermometer above the odometer will not read the temperature, instead it will just say CAL. Anyone else dealt with these issues in the cold weather?

 

im having the same problems with my 08 i believe the sensors will get some water in them and freeze up. mine just done the cal thing yesterday and today it went away, its no big deal you dont need to calibrate your compass or anything it will go away on its own.

 

I figured it was something like that. God I hate the cold. Love the snow but hate the sub freezing temps that like to screw with vehicles systems!

 

My truck hasn't been exposed to sub freezing yet thanks to a garage, but I have had mine go solid in very heavy rain.

Maybe the cold weather causes the sensors to misbehave somehow, I'm not familiar with how they work but maybe they're frozen and can't generate whatever sound or signal they use to figure out how close you are?

 

I think that I have read on here before that one bad sensor could be the problem. Do a search and you might come up with some more information.

 

Yeah, already searched. The other people having problems were dealing with the sensor being off and not being able to turn it on. Mine turns on and off, but sometimes goes into solid tone mode when in reverse despite not having anything behind it. As far as how it works I12AV82, it's basically a radar or sonar signal not positive which, and yes marwilli1, I believe ice is freezing up in the sensor and causing the radar or sonar to refract and set the alert off. I'll have to check it out when we get a few days above freezing up here to see it it's the freezing issue or some other problem.

 

its the condensating exhaust over the sensors...the exhaust fogs them up and causes the false tone... in really cold temps that condensation freezes (read -40 F in Bozeman, mt)

 

I get that too I figured it's just the frost on the lens.

 

i have the same issue.
its frost/ice/frozen snow left on the bumper.

oaw

 

I think I'll stay here in the sunny south

 

So you all think it's the frost on the lens? Even after I've completely wiped them down? I was thinking condesation in the actual housing behind the lense...

What would cause the thermometer to read CAL sometimes? Extreme cold and the thermometer trying to get an accurate reading?

 

I had the same issue. Took the truck to a car wash as it was covered in salt. It was quite cold out at the time. Later that night when in reverse I would get a solid tone from the sensors. When I went out in the morning the problem had gone away. There was no visible snow or ice on the sensors when this issue occured.

No problem since then. It was about 1-2 weeks ago now.

 

I had the rear sensors and had problems with rain and snow. A thin film of ice or some water may cover the sensor and give you the constant tone. Also the immediate area surrounding the bumper might need to be cleaned as well so as to not reflect the signal back. I ended up removing the sensors because it seemed more of a hassle than really how many times I backed up. Unfortunately it may be something you have to live with during these types of conditions. Kinda like satelite reception during poor weather.

 

the temp shows up in the same location as the data for the compass... CAL represents the need for the compass to be calibrated (you held the trip button down for a bit too long)- there is a process outlined in the manual describing how to calibrated the compass to your location...---

think of it this way, you huff on your glasses lens to clean them- that fog goes away in a few seconds, but if another warm moist breath hits it, they fog right back up again- same thing is going on on the reverse sensors- you wiped them off, they're clear for a minute, next time the exhaust flows in the path of the sensors they will fog right back up...