A single lock is driven by an electric motor. It consists of one central control unit, two or four door controls, four door locks, and motors and switches for locking the boot lid or tailgate. Other information regarding a single lock is given in the subsection Single lock - general information and vacuum hoses.
Data exchange between control devices takes place via the so-called CAN bus (via switched lines). CAN is an abbreviation for Controlled Area Network and means that control devices are connected to each other in one network. For example, the connection between the central control unit and the door control unit takes place over two wires. Without the CAN bus, communication would be via 14 cables. Thanks to this, the electronic system takes up little space and weighs little.
The door control devices form a unit together with the power window motors. The unit controls the following power window functions:
- Automatic lifting and lowering of door windows.
- Manual control of raising and lowering the door windows while the driver's door switch is pressed.
- Stopping glass movement as soon as the switch is pressed a second time.
- Window glass can be controlled within 10 minutes after the ignition is turned off.
- Locking windows with a door key.
- Pinch protection in the area from 4 to 200 mm below the upper window seal. If the glass encounters an obstacle during its upward movement, such as a hand, the protection mechanism returns the glass to its previous position. The pinch protection consists of a Hall sensor located on the door control board and a ring magnet on the motor axis. The door operator detects a reduction in engine speed via a Hall effect sensor (when there is an obstruction to traffic) and changes the polarity of the voltage on the motor, i.e. includes reverse.
Warning: The anti-pinch protection may be disabled if the power window is turned on twice within 5 seconds after the window has stopped.
After a power failure of the door operator, for example due to a disconnection of the battery, the operator must again memorize the end positions of the glass. Otherwise, automatic operation of the window is impossible, see subsection Removing and installing the battery.
The door control device also performs the functions of controlling the adjustment of the exterior mirror and its heating.
The central control unit is located in the instrument panel unit and performs the following functions:
- Locking the trunk lid with a single lock.
- Trunk lighting power supply.
- Power supply and timed automatic shutdown of interior lighting, reading light and cosmetics lamp.
- Switching off after 30 seconds: if the key was removed from the ignition or the door was opened and closed again.
- Switching off after 10 minutes: if the ignition is switched off and one or more doors are open.
- Switching off after 1 hour: if the interior lighting was switched on manually and the ignition switched off.
- The interior lighting switches on automatically for 10 minutes if a crash signal is received from the airbag control unit.
- Anti-theft alarm.
- Power supply for front and rear turn signals.
- Power supply for heated rear window.
- Remote control.
The remote control has a range of about 7 m, under favorable conditions up to 10 m.
The transmission of data from the transmitter on the key to the receiver in the vehicle is indicated optically by the LED on the key switch. Built-in rechargeable batteries provide about 5,000 clicks.
If the LED does not light up when the switch is pressed, the batteries need to be replaced.
Windows and sunroof sliding panel do not close remotely.
The remote control receiving antenna is located in the A-pillar of the vehicle on the driver's side. The A-pillar is the first body pillar against which the driver's door rests.
Team "opening/closing" remote control is confirmed by the central control unit by flashing briefly. If the single lock is opened via the remote control and the door or boot lid/tailgate are not opened, the vehicle is automatically locked again after 30 seconds.
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