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.
Coupling Unit And Control Module
The hydraulic section consists of 1-5, the mechanical section consists of 6-10 and the electronic section consists of 11-13.
- Pressure valves
- Accumulator
- Oil filter
- Annular pistons
- Control valve/axial solenoid
- Input shaft
- Inner and outer wet multi-plate clutch
- Inner connection hub with sinusoidal cam disc
- Rollers with annular pistons
- Output shaft
- Electrical feed pump
- Differential electronic module (DEM)
- Oil pressure and temperature sensor.
The differential electronic module (DEM) is integrated in the coupling unit.
The differential electronic module (DEM) communicates with other control modules using controller area network (CAN) communication.
There are internal diagnostics for the control module.
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.
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