Get Heating and air conditioning system -> Auxiliary heater and auxiliary ventilation Guide for Volkswagen Passat SUV Nineth Generation (2023-2025)

The auxiliary heater and auxiliary ventilation systems allow the vehicle interior to be heated in winter and ventilated in summer. The

auxiliary heater allows ice, condensation or a thin covering of snow to be cleared from the windscreen. The auxiliary heater is

supplied with fuel from the vehicle fuel tank and can be operated when the vehicle is stationary with the ignition switched off. The

auxiliary ventilation system is supplied with power by the 12-volt vehicle battery.

Operating mode of the auxiliary heater

When the auxiliary heater is switched on, the vehicle automatically sets the operating mode Heating or Ventilation depending on the

outside temperature and the temperature set in the Climatronic air conditioning block.

At high outside temperatures, the auxiliary ventilation function supplies fresh air to the vehicle interior and helps prevent a build-up of

heat.

Exhaust system of the auxiliary heater

The emissions generated by the auxiliary heater are removed via an exhaust pipe underneath the vehicle. The exhaust pipe must not be

blocked by snow, mud or any objects.

DANGER

The emissions from the auxiliary heater contain carbon monoxide, which is an odourless and colourless poisonous gas. Carbon

monoxide can cause people to lose consciousness. It can also cause death.

● Never switch on the auxiliary heater and leave the auxiliary heater running if the vehicle is located in enclosed or unventilated

spaces.

● Never program the auxiliary heater so that it is switched on and runs in unventilated or enclosed spaces.

WARNING

Parts of the auxiliary heater’s exhaust system become very hot. This can cause fires.

● Park the vehicle so that no part of the exhaust system can come into contact with any inflammable material underneath the

vehicle, e.g. dry grass.

● Before refuelling, switch off the auxiliary heater.

NOTICE

Foodstuffs, medicines and objects that are sensitive to heat or cold can be damaged or made unusable by the air flowing out of the

vents.

● Never leave food, medicines or other temperature-sensitive objects in front of the vents.

The auxiliary heater can be operated when the ignition is switched on and off.

Opening the Stationary air conditioning menu

Open the Stationary air conditioning menu in the Infotainment system

1. Open the app overview in the Infotainment system.

2. Tap

Switching on the auxiliary heater

Immediate heat function in the Stationary air conditioning menu in the Infotainment system.

Button on the remote control .

You can also switch on the auxiliary heater automatically for a planned departure time (→ Auxiliary heater and auxiliary ventilation).

When the auxiliary heater is switched on, the yellow LED for the auxiliary heater lights up in the instrument cluster.

The auxiliary heater will not switch on if the charge level of the 12-volt vehicle battery is low or the fuel tank is empty.

Switching off the auxiliary heater manually

Immediate heat function in the Stationary air conditioning menu in the Infotainment system.

Button on the remote control .

Auxiliary heater switches off automatically

The auxiliary heater switches itself off automatically if one of the following conditions is met:

— The programmed departure time has been reached or the set operating time has elapsed (→ Auxiliary heater and auxiliary

ventilation).

— The yellow fuel gauge indicator lamp lights up .

— The charge level of the 12-volt vehicle battery is too low.

In order to burn the remaining fuel in the auxiliary heater, the auxiliary heater will continue running for a short time after being

switched off manually or automatically.

When the vehicle is at a standstill, the auxiliary heater can be activated up to three times in succession for the maximum

operating duration.

Operating noises can be heard if the auxiliary heater is switched on.

The 12-volt vehicle battery will discharge if the auxiliary heater or auxiliary ventilation is run several times over an extended

period. Drive the vehicle for an appropriate distance in order to recharge the 12-volt vehicle battery.

If you park on a downhill slope with very little fuel in the tank, just above reserve level, the fuel gauge may be inaccurate and

lead to functional restrictions of the auxiliary heater.

Heating and air conditioning system -> Auxiliary heater and auxiliary ventilation for Your Volkswagen Passat SUV Nineth Generation (2023-2025)

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