Error Codes out the Wazoo!
 

I decided to scan my e53 using ISTA and I wish hadn't. What does this mean??

Description:
DME Misfire cyl 6
No Comm possible with Basic Module, Elect Mobilizer, Traction Cont Sys, Steering Angle Sensor, Heating & a/c Sys, Radio, Instrument panel, AIRBAG, Light Module, Dyn Stability Ctrl.

Looks like a low voltage issue.

Sent from my moto g(7) optimo (XT1952DL) using Tapatalk

The car runs perfectly, but requires about a 3 second pause at key position 2 before it will start.