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.
Control Module
The task of the Power Operated Tailgate Module (POT) is to control the hydraulic opening and closing of the tailgate. The control module monitors the movement at closing and opening, and can cancel the movement.
Vehicles manufactured up to and incl. structure week 200947 also have pinch sensors in the moldings, so that Power Operated Tailgate Module (POT) can cancel if something is trapped.
The Power Operated Tailgate Module (POT) is located to the left in the tailgate, inside the tailgate's panel where it is connected to the hydraulic pump and hydraulic tank.
Power Operated Tailgate Module (POT) communicates via the CAN-net with Central electronic module (CEM) and Keyless Vehicle Module (KVM).
The control module checks activations and input and output signals via an integrated diagnostic system.
A diagnostic trouble code (DTC) is stored if the control module detects an error. In certain cases the control module replaces the faulty signal with a substitute value.
Any diagnostic trouble codes (DTCs) are stored in the control module memory. This information can be read off using the diagnostic tool via the data link connector (DLC) in the vehicle.
For further information, also see SIGNALS .
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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.