Limp Home mode on Volvo 680

I don't know much but I would also try dropping the air bag manually to be able to listen more closely if you have the tools

 

You might have a false sense of all airbags being inflated, if three are inflated then the 4th would look like it is as well on the tandems. Each and every one needs to be checked individually. I would start there.

 

Is it possible you broke the leveling rod? If all the bags are down you need to check it, if the truck was bouncing up and down when you were trying to get traction it could have snapped off.

Nevermind, I see where you said the bags are inflated still.

 

"Limp home mode", by gar, that means different things to different people. To a drunk, it's the worst part of the night, to me, it's a hose clamp around a duct taped fuel or air line, or that inside dual that's flat, hoping the outside holds. Good luck,pal.

 

i have the Mack Anthem, if i dump the air bags to drop a trailer and forget to flip the switch
back up that is what it does, i flip the switch back up , and it and it goes back to normal,
should be about the same on the Volvo, i do have electrical glitches, with some of the
switches, and warning buzzers, from time to time , especially in conditions you
described, or when it has been raining

 

Check the leveling valve for loose or damaged wiring. Spinning the drives when you got stuck could have thrown ice and/gravel up and hit the wiring harness to the valve.

 

Done this for numerous issues as most problems are related to sensors,,,nothing physically wrong with the truck. I told wife..if I ever on life support unplug me and then plug back in,,see if that works

 

Make sure she doesn't "forget" to plug you right back in.