Parksmart

You will need a tech to read truck ecm to see what the fault is.. mine was a ecu replacement 4 k bill total. PS it works amazing after repair . I’m good to minus25 and plus 90 ish comfortably now . PS my company wasn’t changing the filter inside enough now that they did all the trucks guys are using it again due to better performance.

 

Was yours doing the same as mine in the video ?

 

Yes but it will do that for a variety of faults apparently.