184002026 - E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING - DESCRIPTION (LOW trim level)
Description
In the case of poor visibility, it is possible to activate demisting of the rear window and the door mirrors.The heating resistances for these components absorb a considerable amount of energy and they are therefore checked and deactivated after a certain period: the defrosting is timed, according to the following logic, managed by the Body Computer:
- ignition ON (INT/A);
- activation signal from the relevant button, located on the climate control system control panel.
The power supply is also cut off under the following conditions:
- ignition in STOP position;
- deactivation signal from the relevant button;
- battery voltage below 8.5 V
- after the first 15 minutes of operation, if the engine speed is below 960 rpm.
Description
The control logic for the climate control system control unit also intervenes for the MAX DEF control in accordance with the logic described previously.The action of the MAX DEF function last 3 minutes starting from when the temperature of the engine exceeds a certain limit. | deactivating the MAX-DEF control only causes the heated rear windscreen to switch off if the command to switch on was given by MAX-DEF; if, on the other hand, the command came from the heated rear windscreen button, it remains on. |