Vehicle Interior at Front Right

An neck heating is offered as optional equipment for the A3 Cabrio. For vehicles with a neck heating, there is an additional vent installed in the seat, and in the Climatronic Control Module -J255- A/C control head, there are additional buttons to switch the neck heating on and off. For additional information HEAD AREA HEATER .

If there is no Humidity Sensor -G355- installed on vehicles with a A/C Control Module -J301- (no sunlight photo sensor), a permissible stop time is currently calculated by characteristic curves which are influenced by the measured outside air temperature, the "recirculated-air mode" function and operating status of the windshield wipers. The calculated time must be greater than 20 seconds so that the stop function is permitted by the A/C Control Module -J301-. The stop time can be shortened at a lower exterior temperature, when the recirculating air mode is active and/or when it is raining to prevent the windshield and door windows from fogging up. If the calculated time for the Stop function is less than approximately 20 seconds, it is prevented.

The Humidity Sensor -G355- is integrated in the Rain/Light Recognition Sensor -G397- and cannot be replaced separately when faulty. Replacing the Rain/Light Recognition Sensor -G397- (with Humidity Sensor -G355-). Refer to OVERVIEW - WINDSHIELD or Windshield Wiper System .

The removal of the Rain/Light Recognition Sensor -G397- (with the Humidity Sensor -G355-) is described in different assembly groups depending on the vehicle.