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First of all stop freaking out. It may be something as simple as a ride height plausibility code (you need to recalibrate).
Either way find someone local who can diagnose the faults in the module with GT1
Did the dealer even reset the faults after replacing struts? They are idiots because they should know that EHC modules store "hard faults" that will remain in the module unless cleared.
In theory, if the error was on the dash and light out on the switch before you went to the dealership, and all they did was R&R the air struts without clearing the faults in the module, your "old fault code" could be stored and preventing the system from working correctly.
If you notice the front is visibly higher and you don't have any faults pointing to other parts having issues, I'm theorizing that clearing the faults with DIS, and recalibrating the ride height should solve your issues.
That is, as long as you didn't have leaking air struts for too long and didn't burn the compressor out of spec in the process. (Ask me how I know)
If that is the case your EHC module will show fault 74, accumulator filling requested pressure remains constant. If you have that fault you will need to repair the air pump, a fix that will cost you under 100 bucks to do.
Either way, dealer incompetence nowadays never surprises me.
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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards
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