BMW 545i 2004 smg Won't Start - Resolved Description

Here is the full list of check codes we get:
-Transmission malfunction
-Active Steering malfunction
-Cruise Control malfunction
-Drive control system! Drive moderately
-Restraint system malfunction


What was the issue?
Checked power input to the IVS, and found it to be 12.5V while output was only 7V maximum across all ECM power supply fuses.

How to fix!
After giving in, took to a local repair shop and they discovered it was the Integrated Supply Module also called - IVM module unit (black and green relay box). Part #12527510638. Compare to $117.31 Shop price.
12 volts was going in and only 7 volts coming out. Be sure to check the relay output plugs. Once this unit was replaced the car started right up.
There are some companies that you can send this unit to for fixing or they are decently priced online.

I hope this helps someone!