3 Series E91 330xi (N52) TOUR
Measures if the windscreen threatens to mist over:
•
Open defrost flaps further
•
Switch from air recirculation/AUC/automatic air-recirculation mode
to partial fresh-air mode
•
Switch from partially fresh air in air-recirculation/AUC/automatic air-recirculation mode to fresh air
•
Increase air volume with the blower
•
Reduce air volume for the footwell
•
Increase desired temperature value
Central kinematics actuation (IHR, IHKR only)
The air distribution flap motor has the task of setting the air distribution over a cam disc. The air distribution flap
motor has no way of recognising the actual position. To allow the cam disc to be unambiguously positioned
despite this, there are two cams of different widths on the cam disc. The microswitch signals to the IHR/IHKR
control unit when the cams pass. This mechanism ensures that the cam disc is reliably and promptly positioned.
Convertible program (E93 only)
The convertible program is activated in the factory. (this factory setting can be deactivated in the "Personal
Profile".)
Switch-on conditions:
•
Terminal 15 ON
•
Convertible top open
The convertible program comprises the following functions:
•
The condensation sensor is switched off
•
The blower speed increases with increasing road speed
•
Air distribution is switched to the upper body and head, airflow to the footwell is throttled.
•
Dynamic pressure compensation is changed, i.e. as road speed increases, the volume of air fed into the
vehicle through the fresh air grille increases.
•
Solar sensor control variables are changed
When the convertible top is open, the solar sensor evaluates the surrounding brightness (darkness to
intense sunshine) more strongly. For this reason, the solar sensor has a stronger effect on the IHKA
controls when the convertible top is open.
In the convertible program, the blower speed can be changed manually at the IHKA controls. The automatic flap
control remains active (no change to flap position).
If the convertible program is active and the flap positions are changed with the CID and controller, the
convertible program will be deactivated. This means that manual settings will be assumed, unchanged settings
will revert to those that the air-conditioning system had before the convertible top was closed.
The convertible program can be completely reactivated by pressing the AUTO button.
Independent heater (option 536)
The independent heating function is activated either via the Central Information Display (CID) or via Telestart
(through the Car Access System (CAS)). There are 2 ways of switching the system on via the CID:
Direct operation or programming using the timer.
[for further information, please refer to SI Technology (SBT) 64 01 05 135]
SBT Integrated heating control and air-conditioning system E70, E81, E82, E87, E90,
BMW AG - TIS
22.02.2013 02:05
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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