Heating and air conditioning system -> Troubleshooting for Your Volkswagen Jetta 4 Door Seventh Generation (2019-2025)

turns off.  
Steering wheel heating switches on automatically  
If you start the engine again within approximately ten minutes, the last heating level set is automatically switched on.  
Saving the heating level  
1. Switch on the steering wheel heating and set the desired heating level.  
2. To save the current heating level, press and hold the  
button for approximately one second.  
The heating level is saved and the steering wheel heating is switched off.  
3. To switch the steering wheel heating back on at the most recently saved heating level, press and hold the  
approximately one second.  
button for  
Steering wheel heating switches off automatically  
If one of the following conditions applies, the steering wheel heating switches off automatically:  
If the energy use is too high.  
If the steering wheel heating system is malfunctioning.  
Rear window defroster  
The rear window defroster works when the engine is running.  
Switch the rear window defroster on and off in the Air conditioner menu or climate control bar.  
The rear window defroster switches off automatically after a maximum of around ten minutes.  
NOTICE  
Stickers that are placed on the inside of the rear window over the heat conductors of the rear window defroster, or objects  
that rest against the inside of the rear window may damage the rear window defroster.  
Do not affix any stickers over the heat conductors of the rear window defroster.  
Do not load the luggage compartment to a height where objects rest against the rear window.  
In order to save fuel, switch off the rear window defroster as soon as possible.  
Automatic supplementary heating function  
Switching the automatic supplementary heater function on and off  
The availability of the automatic supplementary heater function depends on the vehicle equipment. An additional heating  
component can help to heat the vehicle interior more quickly.  
1. Open the Air conditioner menu in the Infotainment system.  
2. To open the Climate control settings submenu, tap  
3. Tap Automatic supplementary heater.  
.
The heating component will switch on automatically depending on the outside temperature and will switch off again  
automatically after a while.  
Troubleshooting  
161  
The cooling mode  
or heating cannot be switched on or the function is limited  
The cooling mode only works when the engine is running and at ambient temperatures above +3 °C (+38 °F).  
The heating and defrost function operates better when the engine is warm.  
If the engine is very hot or if the outside temperature is extremely high, the function of the cooling mode  
the defrost may be restricted.  
, the heating an  
Switch on the fan.  
Check the safeguard on the air conditioning system Replacing fuses.  
Change active combination filters Service.  
If the malfunction persists, contact a suitably qualified professional. Volkswagen recommends contacting an authorized  
Volkswagen dealer or authorized Volkswagen Service Facility.  
NOTICE  
If the air conditioner is not working and is operated further, that can cause subsequent damage.  
If the air conditioner is not cooling or warming the air, switch it off immediately.  
Have the air conditioner checked by suitably qualified professionals. Volkswagen recommends contacting an  
authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
The windows are fogged up  
The door windows fog up if they are colder than the ambient temperature and the air is damp. Cold air does not absorb as  
much moisture as warm air which is why windows fog up more frequently during cold seasons.  
1. To improve the heating and cooling output, keep the air intake in front of the windshield free of ice, snow, and leaves  
Vehicle care.  
2. Leave the air duct in the rear section of the luggage compartment uncovered so that air can flow through the vehicle from  
front to back.  
3. Switch on the defrost function Defrost function.  
The temperature unit has changed  
You can change the unit for all temperature displays in the vehicle using the Infotainment system.  
1. Open the Settings menu.  
2. Select the Units menu item.  
Water or water vapor under the vehicle  
In the case of high outside humidity and temperatures, condensation can drip from the air conditioning system evaporator and  
pool under the vehicle. This is normal and does not mean there is a leak in the system.  
162