Function of residual engine heat utilization

Function

Residual engine heat utilization with stationary ventilation allows vehicle to be heated even with ignition OFF. For this, system uses residual heat of engine and leads it via blower into interior.

Residual engine heat utilization is put into operation by pressing

rest button () on control and operating unit.

Heating water recirculation pump maintains water circuit to heater heat exchanger.

Air quantity is automatically adjusted.

Temperature control takes place in accordance with specified temperature pre-selected on control and operating unit of automatic climate control.

Air distribution takes place automatically:

 Defroster nozzles leak air 80%

 Footwell nozzles open 100%

Before switching on, ignition key must be turned to position 1 or 0 or withdrawn.

Automatic switching off takes place

 if key in steering wheel lock is turned to position 2,

 after approx. 30 minutes,

 if battery voltage falls below 11.5 V.