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.
Data Bus On Board Diagnostic Interface, Drivetrain Control Module, Driver Assistance Systems Control Module
J533
Data Bus on Board Diagnostic Interface
J775
Drivetrain Control Module
J1121
Driver Assistance Systems Control Module
T40a
40-Pin Connector, Black
T54c
54-Pin Connector, Black
T81a
81-Pin Connector, Black
T81b
81-Pin Connector, Black
*
For Vehicles with Level Control System
*2
For Vehicles with Electromechanical Power Steering
*3
For Vehicles Without Level Control System
*4
For Vehicles with Active Steering
*5
For Driver Assistance System
*6
Optional Equipment
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.