Fault Codes – Any insight appreciated

[DeutscheAutos]

Thanks for the feedback, the cleared codes are below.

Engine module for N62
No Faults Found

Gearbox control unit
No Faults Found

Gear lever
Current Fault Codes

A83A:
Undervoltage
Error will not cause a warning light
Error is not currently present
Test conditions have been completed
Signal or value below threshold

A83B:
Overvoltage
Error will not cause a warning light
Error is not currently present
Test conditions have been completed
Short circuit or signal interruption

Dynamic stability control - 4 wheel
No Faults Found

Electro-mechanical parking brake
No Faults Found

Active front steering for E70

Active roll stabilization E70
No Faults Found

Tire pressure control module
No Faults Found

Transmission distribution module
Current Fault Codes

53FD:
53FD Clamp 30g voltage supply
Error will not cause a warning light
Error is not currently present
Test conditions have been completed
Short circuit or signal interruption

53FE:
53FE Unexpected Reset
Error will not cause a warning light
Error is not currently present
Test conditions have not been completed
Signal or value below threshold

55C3:
55C3 VGSG-all-wheel-Notlaufregelung activated. No DXC index moment requirement.
Error will not cause a warning light
Error is not currently present
Test conditions have been completed

55D0:
55D0 CAN message: Steering wheel angle, C4
Error will not cause a warning light
Error is not currently present
Test conditions have been completed

1-axle air suspension E70

Advanced crash system management

Airbag Safety Information Module SIM
No Faults Found

Car Access System 3
No Faults Found

Junction box - passenger
No Faults Found

Air conditioning control panel
No Faults Found

Air conditioning - rear
No Faults Found

Light Control (Footwell module)
No Faults Found

Instrument cluster
Current Fault Codes

A3B6:
CAN ID 5C0 Error: CAS answer RDA DATA doesn't exist
Error will not cause a warning light
Error is currently present
Test conditions have been completed

Park distance control

Roof function control center
No Faults Found

Seat module - driver (SMFA)
No Faults Found

Seat module - passenger
No Faults Found

Central control unit (CON)
Rain and light sensor
No Faults Found

Siren / tilt sensor
No Faults Found

Central information display
No Faults Found

Audio / Video control unit

Audio system controller
No Faults Found

MOST/CAN radio gateway CD73/MD73
No Faults Found

Amplifier / Hi-Fi

Tuner / digital satellite radio – USA

Telematic control module

Trailer module (AHM70)
Current Fault Codes

E544:
K-CAN bus: Defect detected
Error will not cause a warning light
Error is currently present
Test conditions have been completed

E547:
K-CAN: Control Module Bus OFF
Error will not cause a warning light
Error is not currently present
Test conditions have been completed

E554:
Message flashing (1F6): failure
Error will not cause a warning light
Error is not currently present
Test conditions have been completed

E557:
Message Mileage / Range (330): Failure
Error will not cause a warning light
Error is not currently present
Test conditions have been completed
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I will try to research a resolution for these fault codes but I will start by replacing the Transfer Case Module (ATC 700) as I am thinking that is the culprit for many of these codes.

Really looking forward to getting this X5 going, I have always adored this body style and will go over it with a fine tooth comb. Many of my other cars have needed tons of TLC as well, so I am prepared for whatever this one can throw my way.