Stop ventilation mode function

Manual seat ventilation cutout

The seat ventilation can be switched off manually by operating the left front seat ventilation switch (N72/1s13) or the right front seat ventilation switch (N72/1s14); all LEDs in the left front seat ventilation switch (N72/1s13) or the right front seat ventilation switch (N72/1s14) have to have gone out.

The seat ventilation is also switched off if the following criteria, which are listed in descending priority, apply:

Switching off as under terminal 15R OFF

After cutting out circuit 15R, the seat ventilation is cut out as well (load output and function indicator). However, the internal timer control continues running for only 5 more minutes, while circuit 15C is ON. If now circuit 15R or circuit 15 is switched on again, then the seat ventilation is also switched on again in accordance with the timer control setting.

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Switching off in the event of undervoltage

When falling below the undervoltage threshold, the seat ventilation (only load output) is cut out. It can only be cut in again, after a permissible voltage was present for 20 seconds. If undervoltage is detected, the LEDs of the left front seat ventilation switch (N72/1s13) or the right front seat ventilation switch (N72/1s14) that are active flash on and off synchronously with approx. 1.5 Hz.

If overvoltage is recognized, the seat ventilation is not cut out.
If an output short circuit is present, the upper control panel control unit (N72/1) stores no error in the diagnostic trouble code memory.

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Switching off during starting procedure

During the starting procedure the seat ventilation (only load output) is cut out. However, the internal timer control continues running for 5 minutes during the starting procedure. After the starting procedure has occurred, the seat ventilation is switched on again with a delay of 2 seconds, according to its active stage. The status of the function indicator remains set during the starting procedure.