Electrical issues while driving through sand /mud

[Guysrho]

Every time I take my truck on the beach the ecs lights come on the 4x need service lights come on sensors light up the dash and then when I shut it off and restart they all go away and the check engine comes on and back to the dealer I go??

 

[Sascwatch]

I had a connector on the frame rail under the front passenger seat area get damaged and allow water intrusion which caused all sorts of issues. First noticed after driving for over an hour on a half thawed slushy ice road.

Dealer had to replace the connector and related wiring. Doesn’t take much to take the networks down on modern vehicles unfortunately.