What a day today, I had my car stop shifting into Drive, Park, Reverse, then the whole Dash lit up like a Christmas tree lights. I never seen anything like it. It was like what ever symbol that could come up on the dash came up. I managed to get the car to Mercedes dealership safety and finally managed to put it in park after multiple attempts. Then ran major electrical scans on the car and found out that rear electrical harness and rear radar detector was shorting out and send a false signal to the fuse box causing everything to screw up. They disconnected it for now but I am looking for parts 164-40-69-50 Harness for rear sensors and also two radar sensors 000-905-02-10 for my 2012 Mercedes GL350 Blue tec. Can some one help me out where I can find these parts for cheap as I am tight on money. All help is appreciated. Mercedes quoted in the thousands. I said I will find the parts and figure it out on my own.

You could try contacting a place like FCP Euro. They're very helpful and everything they sell is guaranteed for life.

Before you replace the harness... maybe it's just a bare wire that can be easily fixed.