System functions

The power windows comprise the following functions (described as for the E60):

• Opening and closing
• Convenience opening and closing
• Emergency closing and panic mode
• Childproof locks
• Repeat lock
• Anti-trap circuit (not on the rear power windows on the E64)
• Load cut-off

  Opening and closing 

  The power windows may be operated from terminal R ON. When terminal R is OFF the power windows can still be operated for a further minute (encoded in the CAS for deactivation of off-load current violation).

  The power windows cannot be operated if one of the front doors is open (dependent on coding).

  The side windows can be opened and closed using the following control units:

  • Switch block in the driver's door
  • Power window switch in the front-passenger door or in the rear doors
  • Remote control
  • Driver's door lock cylinder

  All the power window switches have two switch levels in either operating direction.

  At the first switch level, the side window is opened or closed all the while the switch is pressed.

  At the second switch level, the side window is opened or closed fully even after the switch has been released (one-touch opening and closing).

  The power window drive runs at higher speed during one-touch opening or closing.

  One-touch opening/closing is only possible with the anti-trap function activated.

  To ensure that the side windows are securely closed, the power window motors are briefly moved to the locked position (mechanical final stop) end in the upper stop.

  Convenience opening and closing 

  This convenience function is controlled by the CAS control unit via the door modules or the body basic module (KBM).

  Convenience opening and can be triggered using the remote control or the driver's door lock cylinder.

  Convenience closing is activated when:

  • The remote control button remains pressed and held after locking/deadlocking,
  • The mechanical key is kept in the "Lock" door lock position.

  Convenience opening is similarly activated via the unlocking button on the remote control or using the mechanical key in the "Unlock" door lock position.

  The sequence for convenience opening is as follows:

  • Both front power windows
  • Both rear power windows after a delay
  • Sliding/tilting sunroof after a time delay

  Convenience closing is performed in the following order:

  • Both rear power windows
  • Both front power windows after a delay
  • Sliding/tilting sunroof after a delay

  The convenience function is stopped if the command is interrupted.

  Emergency closing and panic mode 

  Emergency closing:

  Emergency closing is for intentional closing of the side windows with  the anti-trap function. To do this, the power window switch must be pressed and held. It may be necessary to use this function in the event of an attack from outside or if the side windows are frozen.

  Emergency closing can be activated up to a speed of 16 km/h.

  If something becomes trapped in the window, the selected side window opens just a few millimeters (unlike the normal procedure when something is trapped in the window; see indirect anti-trap function).

  Panic mode:

  The panic mode can only be triggered after emergency closing has been performed.

  If the user releases and then presses and holds the power window switch within 4 seconds, the side window is closed without  the anti-trap function. The side window is then closed with maximum force and speed. If something becomes trapped, the power window motor runs until the overheating protection cuts in.

  It is always possible to open the side windows irrespective of overheating protection.

  Releasing the held power window switch interrupts the emergency closing or panic mode function.

  When the childproof locks are applied, emergency closing for the rear side doors can only be triggered via the switch block in the driver's door.

  If emergency closing is triggered for any side window via the switch block in the driver's door: the closing operation can be stopped by the other power window switches unless the childproof locks have been applied.

  Childproof locks 

  The childproof locks inhibit the function of the rear power window switch. The childproof locks are enabled/disabled through a switch on the switch block in the driver's door.

  When the childproof locks are enabled, the function LED in the button is switched on.

  No opening or closing is triggered when the childproof locks are enabled. Any opening or closing function that is currently in progress (e.g. one-touch closing) is interrupted.

  The childproof locks are deactivated in crash mode.

  Safety functions with the childproof locks enabled and automatic closing function of the rear power windows in progress:

  • The closing operation can be stopped by the relevant local power window switch.
  • The childproof locks can only be disabled if the key is engaged in the ignition lock.

  Anti-repeat circuit 

  An anti-repeat circuit is provided for each motor to prevent the power window motors from overheating. The running time for the power window motor is limited. The motor is switched off for a defined time.

  The anti-repeat circuit permits at least five complete window movements (OPEN/CLOSE).

  The last possible movement is always a closing process.

  If something becomes trapped, the anti-repeat circuit will not prevent opening.

  The anti-trap circuit always reverses the movement of the side window.

  The anti-repeat circuit is integrated in the door modules or in the body basic module.

  Anti-trap circuit (not on the rear power windows on the E64) 

  The anti-trap function is active during the entire window movement in the closing direction. The indirect anti - trap function does not prevent all trapping, but limits the maximum permissible trapping force (closing force limit to maximum of 100 Newtons).

  The anti-trap function is only enabled once the power windows have been successfully initialized and automatic closing (one-touch closing) is possible.

  Initialization of front power windows: 

  During the first operation, only the upper stop on the side window has to be learnt during initialization. To do this, the side window must be moved to the upper stop. No characteristic curve is learnt for the front power windows. The window does not need to move to the lower stop.

  Initialization of rear power windows: 

  During first operation, the characteristic curve must be standardized and learnt during initialization. During standardization, the zero position of the window movement is determined at the upper and lower stops. In addition, during initialization the development of the closing force is measured over the entire closing movement and permanently stored (= learning the characteristic curve).

  The mechanical forces for the closing procedure vary according to the ambient temperature and ageing. Consequently, the closing force is relearnt each time the sunroof closes, so that the anti-trap function can adjust accordingly.

  In each subsequent closure, the closing force currently needed is calculated and compared with the stored value. If the difference between the two force values is over the predefined trigger threshold, the side window opens immediately. The opening procedure can be coded so that it is country-specific.

  The anti-trap function can be disabled in the panic mode (see emergency closing and panic mode).

  If the anti-trap function fails (e.g. faulty Hall sensors), automatic closing is not possible (one-touch closing).

  Load cutoff 

  To protect the battery, the power windows will not operate while the engine is being started (terminal 50). Any current power window operation (e.g. one-touch opening) is stopped.

  If the battery voltage falls below 9 volts, the power window motors are switched off.

National versions 

The following national versions are possible:

• Finland national version

  Operation of the power window and sliding/tilting sunroof is allowed when the driver's or front-passenger door is open. Once the two front doors have been closed, the power windows and the sliding/tilting sunroof are deactivated.

• USA/Canada/Australia national version

  Operation of the power windows and the sliding/tilting sunroof is inhibited if the driver's or front-passenger door is opened. Furthermore, convenience closing is not possible.

• United Kingdom national version

  The reverse opening of the side window when the anti-trap function is activated is greater than on the European version.

Subject to change.