5 Series E60 525d (M57TU) SAL
3 seconds ON, 9 seconds OFF).
The function indicator lamp in the button is off during pulsing.
Heated washer jets
The washer jets are heated, depending on the ambient temperature (under 3
°
C). The IHKA control unit
actuates the nozzle heating.
OFF
Press the OFF button to completely switch the IHKA controls off.
Air-recirculation mode
In air-recirculation mode, the flow of outside air can be stopped to prevent pollution from entering the vehicle,
e.g. in traffic congestion. Air from the vehicle interior is continuously circulated.
To prevent the windows from misting over, air recirculation is only available for a limited period of time.
Automatic air recirculation
In automatic mode, the system will automatically switch to air-recirculation mode if an extreme cooling output is
called for. This allows the vehicle interior to be cooled more quickly. Air from the vehicle interior that has already
been cooled is fed through the evaporator again. This reduces the temperature level much faster than it would in
normal operation.
Automatic air-recirculation mode initially runs for 12 minutes in full air-recirculation mode and then
continuously in partially fresh-air mode (fresh-air flap opening angle: approx. 10 %).
Automatic air-recirculation control (IHKA High)
If the AUC sensor detects an excessively high level of emissions in the environment, the IHKA control unit will
automatically switch to air-recirculation mode.
Because of the lack of a fresh-air supply, air-recirculation mode is only available for a limited period of time:
•
In heating mode at ambient temperatures above 6
°
C, air recirculation is limited to 4 minutes. This is
followed by fresh air for 1 minute.
•
In air-conditioning mode at ambient temperatures above 6
°
C, air recirculation is limited to 12 minutes.
This is followed by fresh air for 1 minute.
•
At ambient temperatures between 6
°
C and 0
°
C, air recirculation is limited to 3 minutes.
At ambient temperatures below 0
°
C, air recirculation is limited to 2 minutes.
This is followed by fresh air for 1 minute.
When the engine is started and the AUC function activated, fresh air is always selected for
approx. 40 seconds due to the warming phase of the AUC sensor.
Program for avoiding condensation on the window surfaces (IHKA High only)
Measures to prevent condensation on the windscreen depend on a number of conditions:
•
The engine must be running
•
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 turn until the condensation has been eliminated. 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.
Measures against condensation on windscreen:
•
Open the defrost flaps further (max. 17.5 %)
SBT Integrated automatic heating / air-conditioning system (IHKA), Basic and High E6
BMW AG - TIS
12.02.2013 16:16
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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