Thor Forums

[MEWright]

Week old (to us) 33.3 2015 Palazzo with 16K. Purchased from a dealer, have ext warr, 1/2 tank of diesel through it since purchase and while driving the regen light came on. Was not expecting this so we stopped and engine light came on, read manual, no real help. Called Freight liner. They told us to get back on the road and keep it over 45MPH for the auto regen so thats what we did. 10 miles later (at 60mph) the check engine light went off, 5 +/- more miles and the regen light went off. GREAT.. NOT SO MUCH, next 5-10 miles the regen light came on then went off. GREAT RIGHT.. NOT SO MUCH.. Regen light came on, check engine light came on, then the SHUT OFF MOTOR! warning came on on the dash. We stopped as quickly as safely possible .5 miles or so. Called Freightliner and was walked through doing a forced parked regen. It would not allow it to happen.

Long story short, we unhooked the jeep and drove 3 hours home, the coach is being towed to Freightliner in SA TX, the dealership we purchased it through told us they would cover everything. The code
< SPN 3251 FMI 0 SA 0 > on the dash says (google searched the code) DPF is beyond its limits. No option to clear codes or reset to check if they re-apply, wont REGEN. Freightliner was amazing to speak with, super helpful even once they determined we were not original owner and the coach is out of factory warranty.
Motor never lost power, never got hot. Nothing other than dummy lights.

Has this happened to anyone else? Has anyone had to replace their DPF?

It looks like the DPF (the actual filter) is about 4K for the part. I have heard of old DEF causing issues but have not been able to determine if this is one of those issues. The dealer provided the coach to us at delivery with full everything, doubt the DEF was old.