Unlocking vehicle with remote control key, function

P80.20-0419-09

A26/1 Left front door IR receiver
A26/2 Right front door IR receiver
A37 PSE control module (combined)
CAN Controller area network
E22/1 Left auxiliary turn signal lamp
E22/2 Right auxiliary turn signal lamp
E3/e1 Turn signal lamp
E4/e1 Turn signal lamp
E6/1 Left turn signal lamp
E6/2 Right turn signal lamp

2 Antenna
3 Pneumatic actuator in driver's door
4 Pneumatic actuator in passenger door

5 Pneumatic actuator in left rear door

6 Pneumatic actuator in right rear door

7 Pneumatic actuator for tank flap

Illustrated on model 210

N10/1 Driver-side signal acquisition and
actuation module (SAM)
N69/1 Front driver-side door control module

N69/2 Front passenger-side door control module

N70 Overhead control panel control module

N73 Electronic ignition switch (EIS) control modul

1 Remote control key

Remote control key set to "selective unlocking"
When the "unlock vehicle" button is pressed the remote
control key sends a radio frequency and infrared signal to
the corresponding receivers in the vehicle. These receive
the signal and transfer the contents to the electronic ignition switch (EIS) control module (N73) via the CAN bus. The EIS checks the code for access authorization. If the check indicates that
the code is valid, the EIS transfers the command for pneumatic unlocking to the PSE control module (combined) (A37) via
the CAN bus.

If the vehicle was locked previously the PSE performs selective unlocking, i.e. it unlocks only the driver's door and tank flap.

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If the driver's door and tank flap are already unlocked and another request to unlock is received, the PSE then performs global unlocking so that all of the remaining locking points are also unlocked.

Remote control key set to "global unlocking"
When the "unlock vehicle" button is pressed the remote control key sends the radio frequency and IR signals to the corresponding receiver in the vehicle twice immediately after one another. The result is the same as if the "unlock" button was pressed twice with the remote control key set to "selective unlocking".

Following global and selective unlocking with the remote control key the interior switches are released.

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