The luggage compartment lid is opened or closed automatically when one of the luggage compartment lid buttons is pressed. A basic prerequisite being that there must be no "inhibit condition" present. You will find a description of the inhibit conditions in the "Luggage compartment lid movement inhibit conditions" section of this Product Information.
Automatic Opening Procedure
The following procedure begins with a closed luggage compartment lid.
NOTE: On the US variant, the luggage compartment lid button on the identification transmitter must be released otherwise the luggage compartment lid will not be opened automatically.
The luggage compartment lid is completely opened. If one of the inhibit conditions becomes active during luggage compartment lid movement, this will stop further movement of the luggage compartment lid.
Luggage Compartment Lid Opening with Comfort Access
Vehicles equipped with the Comfort Access option also have a "keyless opening" luggage compartment lid function.
The junction box electronics wake a sleeping vehicle in response to the outer luggage compartment lid button being pressed. The junction box electronics send the request on the K-CAN2. The Car Access System with Comfort Access receives the request and arranges for the identification transmitter to register with the vehicle.
Once the identification transmitter has been successfully verified by the Car Access System, the latter arranges for the luggage compartment lid to be unlocked. The junction box electronics execute the unlocking procedure.
As soon as the status of the luggage compartment lid contact switch changes, the junction box electronics issue a notification on the K-CAN2. The central gateway module implements the signal on the K-CAN. In response, the HKL then executes the automatic opening procedure.