
The steps to turn on the heating in a Passat are as follows: 1. The base version of the Passat comes with manual air conditioning, while the high-end version features automatic air conditioning. For models with manual air conditioning, simply adjust the air conditioning to the heating mode to activate the warm air. 2. For models with automatic air conditioning, set the desired temperature, and the system will automatically blow warm air. 3. The automatic air conditioning system will adjust itself based on the interior temperature. Below are some key functions related to the Passat's controls: (1) Defogging: There are buttons for front and rear windshield defogging. Press the corresponding button to activate the defogging function for the windshield. (2) Heating: Turn the knob to the high-temperature indicator area to deliver warm air. When using the heating function, make sure to turn off the A/C switch. This is because the A/C compressor is only used for cooling, while the heating is provided by the coolant temperature and the heat from the heating element. (3) AUTO: Press the AUTO button, and the air conditioning system will automatically maintain a stable interior temperature without manual adjustments. Whether cooling or heating, or adjusting the fan speed, the system intelligently makes the necessary adjustments. (4) Recirculation/Fresh Air: Recirculation mode keeps the interior air enclosed, while fresh air mode allows air exchange between the inside and outside of the vehicle. Use recirculation mode in congested areas or environments with poor air quality. However, do not use recirculation mode for more than one hour at a time; switch to fresh air mode to maintain healthy air quality. (5) Temperature Zone Synchronization: With the temperature zone synchronization function, changing the temperature setting for the driver's seat will synchronize the settings for the other zones. Disabling this function allows each zone to be set individually, catering to the preferences of passengers in different seats.

The basic steps for turning on the heater in a Passat are quite simple. After getting in the car, I always start the engine first, as the engine needs to warm up to produce hot air. Then, locate the air conditioning control panel and turn the large temperature knob toward the red direction, setting it above 25°C. Adjust the fan speed button to a higher setting, but avoid maxing it out immediately to prevent excessive noise. For the airflow direction, I prefer directing it toward the windshield and footwell for quick defogging and warmth. Remember to turn off the A/C button since it's only for cooling to save fuel. In winter, it's best to wait a few minutes after a cold start for the coolant temperature gauge to rise before turning on the heater to avoid blowing cold air and freezing yourself. Keeping the cabin air filter clean also ensures fresher air.

As a frequent driver of the Passat, I believe the key to using the heater is practicality and peace of mind. After starting the vehicle, patiently wait until the coolant temperature light goes off or the gauge reaches the middle position. Then turn on the fan to medium speed and rotate the temperature knob to the hot end beyond 22 degrees. If the car has automatic climate control, simply press AUTO and set a high temperature—it will automatically adjust fan speed and temperature. For air distribution, a mixed mode is recommended, such as combining upper body and windshield settings for both comfort and defogging. Remember to turn off the A/C to save energy and reduce carbon emissions. When the heater hasn't been used for a long time, preheating the system prevents blockages, extends its lifespan, and avoids unpleasant odors.

The Passat's heating system relies on the engine coolant circulation for warmth. Here's how I usually operate it: Start the engine and wait until the coolant temperature rises before the fan blows hot air. Then press the air volume button on the AC panel to set it to 1-2 levels, and turn the temperature knob towards the red zone. For automatic AC, simply press AUTO and set a higher target temperature. Turn off the A/C button to reduce power consumption. Adjust the vent direction to central airflow for better comfort. Note: Don't turn on high fan speed immediately after cold starts to avoid excessive engine load – this can save some fuel.


