Intake Air Control

WARNING: This page is about a different car, the 2018 Land Rover Discovery and 2017 Land Rover Discovery. However, it is still accessible from the selected car via links, so may be relevant.

The source of inlet air is automatically controlled by the Automatic Temperature Control Module (ATCM). Unless the source is overridden by pressing the recirculation switch on the Integrated Control Panel (ICP) to give timed or latched recirculation. A brief press of the switch illuminates the switch indicator and activates timed recirculation. There is also a pop up on the Touch Screen (TS) informing the user if the system has entered latched or timed recirculation. Pressing and holding the switch causes the switch indicator to flash and then illuminate constantly, indicating that the air inlet is in latched recirculation. A second press of the switch cancels recirculation and the ATCM returns the recirculation door to the fresh air position. Timed recirculation is automatically cancelled after a set time, which varies with ambient air temperature.

During automatic control, the ATCM determines the required position of the recirculation door from comfort algorithms and the pollution sensor. The ATCM is looking for spikes in pollution and attempts to stop the spikes entering the vehicle.

The sensitivity of the pollution sensor can be adjusted on the TS, using the Settings soft key of the Front climate menu. The pollution sensing function can also be switched off by adjusting the sensitivity to the minimum setting. If there is a fault with the pollution sensor, the ATCM disables automatic operation of the recirculation door due to the pollution sensor. The ATCM shall continue automatic operation of the recirculation door due to the comfort algorithms.