Retrofitting a hitch on an E70
I need to retrofit a hitch in my 2012 E70 X5 36d and I was hoping someone smarter than me could confirm that I'm on the right track. I have a cable & software and I've confirmed that it is all working. I have the latest daten (thanks to a certain member here).
My plan is to add +AHMU to the VO and FA Write to the CAS and FRM modules. Then I will process CIC, RPDC, CAS and FRM by reading & writing the default settings.
If that all goes well I will attempt to code the CIC MACRO_TRAILER_COUPLING to aktiv and confirm that LAENDERVARIANTE_AHM is set to US.
My only question is if I can do this all with the engine off and no battery charger without running the battery flat.
Any other advice is appreciated.