Dodge Repair Questions? Ask a Mechanic for Answers ASAP
unfortunately the independents are correct, you need the fault code stored in the DEF computer to diagnose the reason for the warning, it could be anything from faulty DEF fluid ( i just had a customer have an employee put diesel in the DEF tank and ruined the ENTIRE system, to a simple flash update.
this is all work the dealer must perform and ESPECIALLY if you're still under warranty
you will need a dealer WiTech scan tool to clear this type of code and reset the system
depends on the area you're in and their business clientele, the dealer i work for is open on Saturdays for simple maintenance, and some are open full weekends, BUT you have to remember the techs need time off and can't be forced to work 7 days, and unless there is an actual need it makes no economic sense to open a weekend, when i was in florida 24/7 was VERY common but there was a huge amount of work and it justified having 4 shifts, i am back in connecticut and there is no such thing on saturday we are DEAD and only open 4 hours the dealer actually has to pay extra to get a tech to come in, no one requests weekend hours here, each part of the country is different