Speedometer Calibration

[Hebbie]

Hello,
I have a 2020 Ram 1500 Laramie purchased from Ram dealer with a Mopar 3.5 lift and 35" tires on the stock 20" rims.
I noticed that the speedometer was off by 6 mph I took it back to the dealer and they calibrated the speedometer but now with the calibration My parking sensors do not work. If they take the calibration off they work fine. Just went today they calibrated at 34" tire but sensors still do not work and speed is off by 1 mph. Any body ever have this issue.

 

[Scram1500]

I believe it is a known issue without a resolution. The Rough Country states that it will not work with park assist, not sure about others but I'd assume they all work the same with similar results

 

[Hebbie]

Thanks Scram, I've been in touch with Chrysler about this so we'll see what happens. My question to Chrysler was if my 1500 with the Mopar lift sits as high as a stock 2500 that has the same features why isn't it working. I guess it's a wait and see issue.

 

[RamCares]

Hello,
I have a 2020 Ram 1500 Laramie purchased from Ram dealer with a Mopar 3.5 lift and 35" tires on the stock 20" rims.
I noticed that the speedometer was off by 6 mph I took it back to the dealer and they calibrated the speedometer but now with the calibration My parking sensors do not work. If they take the calibration off they work fine. Just went today they calibrated at 34" tire but sensors still do not work and speed is off by 1 mph. Any body ever have this issue.View attachment 83978

Hi there, we are sorry for the trouble-- if you would like for our team to look into this further, please feel free to follow up with us privately to provide your VIN. Thank you!

Kathryn
Ram Cares