Fogged-up windows are a common occurrence when driving, especially during the damp and cold seasons. Normally, modern air conditioning and ventilation systems are able to resolve the problem very quickly. However, this seems to be different with some Teslas.
The problem: Tesla windows constantly fog up
Tesla drivers have reported instances where they had to contend with fogged-up or even dripping wet windows for hours on longer journeys. Sometimes this condition only occurred after some time of driving, even though visibility was initially clear.
In these cases, even at maximum power, the air conditioning was often unable to provide any improvement, or only for a short time. What could be the reason for this?
Possible causes for fogged-up Tesla windows
If the ventilation system itself is not defective, but air is clearly blowing from the desired vents, the first step is to rule out moisture in the intake system. For this, it is recommended to change the cabin air filters, which you should do regularly anyway for clean cabin air.
If the filters are damp or even wet, there is most likely water in the intake system and the problem has been located. If, however, the filters are dry, the search for the cause continues. Here you will find our antibacterial filters Teslab's cabin air filter, which reliably protect you from fine dust and allergens thanks to activated carbon technology.
However, moisture is not only found in the ventilation system, but can also penetrate the interior from other points. This often manifests itself in wet carpets from which water can be squeezed out.
Finally, it can also happen that control flaps in the ventilation system become blocked, for example by leaves and other foreign objects, but also due to wear and tear or other malfunctions. Tesla's software diagnoses such problems and displays them in the service menu – which is generally a good diagnostic tool.
Here you can read more about Tesla Service Mode, which can also be of great help to you with this problem.
Problem found? Head to the service center.
All of the aforementioned causes have one thing in common: they are not usually fixable by the owner. Once a possible cause has been identified, the next step is to visit a service center. Of course, a software problem in the climate control system can never be ruled out with Tesla – but this usually resolves itself with the next updates.
Are you also suffering from fogged-up windows? Feel free to leave a comment!
