Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Towing Recognition Control Module, Data Bus On Board Diagnostic Interface
J345
Towing Recognition Control Module
J533
Data Bus on Board Diagnostic Interface
T2nr
2-Pin Connector, Black
T2ns
2-Pin Connector, Black
T7c
7-Pin Connector
T10at
10-Pin Connector, Black
T24a
24-Pin Connector, Black
T54a
54-Pin Connector, Black
TAHKV
Electric Trailer Brake Coupling Point
U10
Trailer Socket
VX15
Trailer Hitch
730
Ground Connection 1 on Right Rear Wheel Housing
B397
Comfort System CAN Bus High Connection 1 (in Main Wiring Harness)
B398
Comfort System CAN Bus High Connection 2 (in Main Wiring Harness)
B406
Comfort System CAN Bus Low Connection 1 (in Main Wiring Harness)
B407
Comfort System CAN Bus Low Connection 2 (in Main Wiring Harness)
*
Not Included in the Preparation
*2
For Vehicles with Trailer Setup
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.