1 Series E81 118i (N46T) 3-door
The function indicator lamp in the button is off during pulsing.
•
2nd heating period
After the 1st heating period has expired, each subsequent time the button is pressed will cause the heated
rear window to be switched on for a further 30 minutes (defrosting phase).
After the 2nd heating period has expired, output is again pulsed.
OFF
The IHR/IHKR/IHKA control panel is switched off when the blower speed is set to 0 (The control panel/control
unit continues to run in the background.)
Air-recirculation mode
In recirculated-air mode, the flow of outside air can be stopped to prevent pollution from entering the vehicle,
e.g. in traffic congestion. Air inside the vehicle is continually recirculated.
To make sure that there is a sufficient supply of fresh air, air-recirculation mode is only available for a limited
time (30 minutes air recirculation -> 30 seconds partial fresh air -> 30 minutes air recirculation -> etc.)
Automatic air recirculation control
> E81, E82, E87, E90, E91, E92, E93 only IHKA
> E70: IHKA High only
If the AUC sensor detects an increased level of pollutants in the environment from spark-ignition and diesel
engines, the IHKA control unit will automatically switch to air-recirculation mode.
To make sure there is still an adequate supply of fresh air, air recirculation is only available for a limited time:
•
At ambient temperatures less than 0
°
C:
2 minute recirculated air mode -> 1 minute fresh air mode (from 03/2005: 20 seconds) -> 2 minute
recirculated air mode -> etc.
•
At ambient temperatures from 0
°
C to 6
°
C:
3 minutes air recirculation mode -> 1 minute fresh air mode (from 03/2005: 20 seconds) -> 3 minutes air
recirculation mode -> etc.
•
Operation without air-conditioning function at ambient temperatures greater than 6
°
C:
4 minutes air recirculation mode -> 1 minute fresh air mode (from 03/2005: 20 seconds) -> 4 minutes air
recirculation mode -> etc.
•
Operation with air-conditioning function at ambient temperatures greater than 6
°
C:
12 minutes air recirculation mode -> 1 minute fresh air mode (from 03/2005: 20 seconds) -> 12 minutes air
recirculation mode -> etc.
When the engine is started and the AUC function activated, fresh-air mode is always selected for
approx. 40 seconds due to the warming phase of the AUC sensor.
Program for preventing condensation on the window surfaces (IHKA only)
The following conditions must be satisfied for measures against condensation on the windscreen to be effected:
•
Engine running
and
•
The IHKA must be in automatic mode
The IHKA control unit evaluates condensation sensor signal (humidity). If condensation on the windscreen is
imminent, the following measures are initiated in sequence to prevent condensation from forming.
If a measure proves to be ineffective, the next measure is initiated.
Once successful, the measures previously performed are reversed step-by-step in reverse order.
SBT Integrated heating control and air-conditioning system E70, E81, E82, E87, E90,
BMW AG - TIS
19.01.2013 06:33
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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