Cummins12V98 wrote:
"THIS" is a biggie for those with the 3500 rear air when unhitching. If you are slow about unhitching the rear air system will start trying to re level and give you a big startle when un hitching. I read on another forum of a guy thinking it was all the fault of his new to him B&W hitch.
So here is the way to unhitch and hitch if you so choose.
When backed into the spot where you want to unhitch go into "Settings" then select "Suspension" then select "Tire Jack Mode". This will keep the rear from moving while unhooking and hooking. I touch no controls after unhooking then the system goes back to Alt Ride Mode as I had it set. I leave mine in Alt ALL the time.
Hope this helps with someones frustration!
Your technique is good to know. I'm currently using an Andersen ultimate hitch with my 5er, and normally leave the engine running as I disconnect. As a result, the truck starts re-adjusting for load which can be problematic. I didn't think about your method of turning it off, but makes perfect sense.
As for not having heard of issues with the factor rear air on 3500's, mine has been into the shop a couple times for it, and hasn't been fixed. The issue is only in the cold and snow, where after you've towed and unhooked, the next time you start the truck you get a service air suspension fault that goes away by itself after driving a bit. They have re-flashed my truck for it because there is a known problem with the suspension in the cold. It still has the problem though. In looking at my truck when it has done it I think the problem is probably with the Mechanical linkages they use to sense truck suspension height. They get iced up bad with snow and slush that freezes hard when I park. My long term fix is to retire next year so I hopefully can avoid towing in the snow.
