Update. Changed the front bank O2 sensors and MAP thermostat and cleared those codes. While replacing the MAP noticed some fluid pooled on top of the hydraulic brake pump and when I opened the cap exposing the wire harness is was soaked with fluid! So began to dismantle the pump and undo any harness tape that was not original. Upon doing so (can’t remember if I’ve mentioned the PO installed an after market stereo) found one wire that was frayed, one with a broken connector and one missing the ground wire. These repairs have seemed to clear up many of the electrical issues (brake lights, PDC, check engine) however still no luck with the transmission fail safe....although it took a bit longer to go into that mode today.

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2002 X5 4.6is Black Sapphire Metallic/Black