So i've got the dreaded service def system see dealer indication. For example, if the tune turns off the def system, the cts3 can no longer read % def, the def command or the def tank level gauge. 2020 ram 2500 6.7l bighorn 26,000 miles.
Ram 2500 Service Def System See Dealer
Local dealer is telling me they are waiting for engineer input.
I am in mt, so the cold temps could play a role.
So far i’m told, service bulletin on it pertains to air in the def system, but the def was also frozen the first time. In march 2023, ram released service bulletin zdf for “service def (diesel exhaust fluid) system see the dealer”. At geno’s garage and the turbo diesel register (tdr) we’ve seen and written about problems with the truck’s diesel emissions fluid (def) system. Unless your ecu is glitching, the ‘service def system, see dealer’ message means there’s an issue with.
What does the service def system, see dealer message mean? You have a warranty even. The tune on my 2016 1500 now turns. If your vehicle’s cel comes on with the message “service def system:
Service def system see dealer — this message will display when the fault is initially detected, each time.
When the def system needs to be serviced the following warnings will display: See dealer,” there’s a good chance you have a problem with this system. You could try a reset by pulling your negative battery cable for at least 30 minutes to clear the code but if it comes back, go see the dealer for a fix.
