E70 X5 35D 4x4 and DSC MALFUNCTION

[Mando0403]

I drive 2012 BMW X5 35D. Issues when turning on the car Dashboard shut off and fuse 134 (dashboard fuse blown 5amp) Wipers would go on non-stop and I would loose all lights. This was my first electrical problem and I was freaking out! Replaced the 5amp fuse then started getting DSC AND 4x4 Chasis Malfuction. Took the vehicle in to local Indy shop was told it needed:
First,
A
#1 new battery, battery was almost four years old and that it needed to be replaced soon. Battery $400 with programingdrove the car few days problem persisted.
#2 was then told needed calibration of angle sensor and software update. Got it done problem persisted.
#3 was told alternator was bad, overcharging unit causing dashboard to shut down and blow fuse 134. Got it replaced $1,000 problem persisted.
By this time I was loosing my mind stressed out wanting to punch the shop owner.
After negotiating some refund (minimal) I Finally decided to go into dealership and get a diagnose 134$.

I was told it was the STEERING ANGLE SENSOR! Which is not sold separately. Steering switch unit part #61-31-9-164-423 price 763+labor and programming $1,200!! Again wanted to
Spoke to service manager (awesome smart dude) vented and was able to get a discount $850 (A deal I think, asked around town 1k+) and was reassured that if that didn't fix the problem he would eat the charge and figure it out. To my surprise...Problem finally fixed!

Hope this helps guys