2020 FREIGHTLINER CASCADIA Electrical System Problems

I have experienced this issue a few times, and so have several acquaintances who drive the same make and model of truck as I do. Whenever it rains or I go through a truck wash, the starter shifter blocked comes on the screen while driving, causing the RPMs to fluctuate and resulting in a complete loss of power to the vehicle. One dealership informed me that this is a common problem, attributed to moisture seeping into a harness located near the transmission. Tried connecting the truck to a computer so see fault codes nothing comes up because it's a glitch and clears out. This situation poses a serious risk, as it could potentially lead to a fatal accident. With no proof of the malfunction.

The contact owns a 2020 Freightliner Cascadia. The contact stated that while driving at various speeds, the low tire pressure alarm sounded at 120 PSI. The contact stated that there was an abnormal buzzing sound detected. The contact stated that the air pressure alert should engage at 60 PSI. The vehicle was taken to the dealer however, the mechanic was unable to duplicate the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 400,000.

WHEN MY TRUCK DRIVING ON THE HIGH WAY WITH 70 MILES PER HOUR. THE CLUTCH FAN KICK IN - CRUISE CONTROL AUTOMATICALLY CANCEL - GEAR IN AND OUT. RPM ROSE UP AND DOWN FAST FROM IDLE TO THE CURRENT SPEED. IT BROUGHT TO DEALER TWICE BUT THEY SAID MY TRUCK IS RUNNING FINE. THERE IS NO LIGHT COME ON. 1ST TIME TOOK TO DEALER AT 54000 MILE, 2ND AT 63000. NOW IT IS 70,000 MILES. *TR