ACC, ESC, collision avoidance system fail

[UncaBuddha]

2020 1500 Ecodiesel Limited with 41,000 miles. Today, after about 3 hours of freeway driving in the rain at around 70mph, stopped for lunch. When I came back and started the truck, I had several yellow caution symbols on the dash. Advanced Cruise control inop., front and back collision avoidance inop, electronic stab ctrl inop, 4x4 fault. Shutdown and restarted, no cure. Drove in the lot, restarted, no cure. The 2WD light is out. Nothing hot so I don't suspect a dragging wheel. I rarely drive in 4WD. Drove home and made an appointment for tomorrow morning at 9am. EST. Any ideas? I hate to think of going to the dealer with NO IDEA of what's wrong...
Thanks!

 

[jkm312]

Try rinsing the sensors out with a little water and a damp rag. They can get full of dirt.

 

[UncaBuddha]

Try rinsing the sensors out with a little water and a damp rag. They can get full of dirt.

What sensors? The radars on the bumpers? I did that in the parking lot...

 

[jkm312]

What sensors? The radars on the bumpers? I did that in the parking lot...

Both the RAM and our Maxima do this once in awhile running in snow, muddy and sometime juicy bug spatter conditions. I just knock off the build up on the sensors in the bumpers and so far it has solved the problems for us.

What did you find out from the dealer?

 

[UncaBuddha]

Both the RAM and our Maxima do this once in awhile running in snow, muddy and sometime juicy bug spatter conditions. I just knock off the build up on the sensors in the bumpers and so far it has solved the problems for us.

What did you find out from the dealer?

I wiped down all the sensors when it first happened. I don't know why the sensors would cause a "check 4WD" light!
They had the truck all day "for analysis" and don't know yet... uh oh...

 

[UncaBuddha]

Dealer says the "front axle disconnect need to be replaced". $1156
what do you guys think?

 

[UncaBuddha]

I messaged the rep and asked if this was under warranty and she said OOOPS! So they are going to fix it. Is there anything I need to check when I go to pick the truck up?