General

Activation of the Pneumatic System Equipment (PSE):
The remote trunk release switch (N72s15) (RTR) is connected via the CAN data line to the PSE control module (A37). The radio signal is sent from the IR transmitter key to the roof control panel control module (N70). The roof control panel control module then sends a signal via CAN data line to the electronic ignition lock control module (N73). If a valid signal is recognized by the electronic ignition lock control module, the PSE control module is activated via the CAN data line.

The infrared signal from the IR transmitter key is sent via the left/right door IR receiver (A26/1, A26/2) to the individual front driver-side/passenger-side door control modules (N69/1, N69/2). The receivers send the signal via the CAN data line to the electronic ignition lock control module (N73). If a valid signal is recognized, the PSE control module (A37) is activated via the CAN data line.

When the trunk lid is unlocked, the LED in the remote trunk release switch is activated (illuminated) by the PSE control module, via the CAN data line.

Particular notes regarding Model 208.465 (Cabriolet):
RTR function via the RCL transmitter key is not possible.
The power soft top control module (N52) "signals" via CAN interior databus if the power soft top is unlocked or locked, or if the power soft top switch (S84) has been activated. As a result, as long as the CAN message (signal) is:
"Power soft top switch (S84) activated" or "Power soft top unlocked" the RTR unlocking function is not possible.