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process of opening.
If no operable anti-trap mechanism is detected as the result of defective Hall sensors, the
window can only be operated in jolts. The power window is in emergency mode and
must be reinitialized. A Check Control message will be displayed.
Panic Mode
Panic mode is triggered by overpulling - releasing- overpulling (overpulling = pulling
beyond limit stop) the power window switches.
It is necessary to release and overpull the switch again as the anti-trap mechanism is still
active the first time the switch is overpulled.
Overpulling the power window switch the second time within 4 seconds closes the win-
dow with maximum force.
Note: The indirect anti-trap mechanism is no longer active in this case. The
window closes at the maximum closing force and does not reverse.
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E70 Power Windows
Load Shut-Down, Terminal 50
To protect the battery, operation of the power windows is interrupted during the vehicle
start procedure.
The Car Access System 3 revokes the enable for power window operation in order to
interrupt current operation of the power windows. The signal is received by the footwell
module and junction box control unit via the K-CAN.
The power window switches must be pressed again following an interruption in opera-
tion. The corresponding function is not executed if the power windows are operated dur-
ing the start procedure.
The enable for operation of the power windows is not issued until the start procedure has
been completed.
Thermal Protection
The footwell module and the junction box control unit monitor the motor temperature.
The motor temperature is determined based on the outside temperature, motor running
time and the time the motor is stationary (not operative).
Each motor can be switched off individually to prevent the power window motors over-
heating during operation of the power windows). The motor is then deactivated for a
defined period of time. The thermal protection facility does not prevent the windows
being opened in the case of trapping. Once started, a power window function is not inter-
rupted by the thermal protection facility.
In panic mode the window can still be closed even when the thermal protection function
is active.
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E70 Power Windows
Service Information
Initialization
The front and rear power windows can be initialized via the power window switches or
the BMW diagnosis system.
Via Window Switches
The following procedure must be performed to initialize the system:
" Completely close window by pulling the power window switch beyond the limit
stop.
" Briefly interrupt pulling the power window switch and then pull the switch upwards
again for approximately. 1 second.
Via the BMW Diagnosis Equipment
The power windows can be initialized as part of an initialization job using the diagnosis
system. A detailed description of the initialization procedure is provided in the BMW
diagnosis system.
Note: The power windows can only be moved in jolts if not initialized.
15
E70 Power Windows
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