Do it yourself
Frequently asked questions about cars and motorcycles

The Reason Why Condensation Forms in Headlamps; What to Know When Buying a Used Car

Model: (Various brands) Various
Part: Headlight

Video tutorial

In this video, you can discover why older vehicles often develop condensation inside the headlamp, especially in the front one. It is very unlikely to be a defect of the optical unit, as all components are well sealed and it is difficult for water to enter.

Therefore, it is likely that the reason is that the vehicle has been in an accident, causing the plastic part to flex slightly and create micro-leaks that allow water to enter.

Thus, the issue is not so much the headlamp itself, which can be easily replaced at a low cost, but rather what has happened beforehand.


Updated on 27 September 2026 by ScegliAuto


Related tutorials

(Various brands) Various What does it mean when we open the oil cap and find a disgusting sludge inside? It is a bad sign, because it could indicate a crack in the cylinder h…
(Various brands) Various In this video, we can see what causes the oil in our vehicle to emulsify, forming the so-called "mayonnaise", a slimy whitish emulsion that, from its…
(Various brands) Various Condensation on the windows forms due to humidity and temperature differences inside and outside the cabin. When the cabin is warm, humidity condense…

How to Open the Fuel Flap on a Volkswagen Tiguan?

To open the fuel flap on a Volkswagen Tiguan, first unlock the car using the appropriate button on the remote. This will open the car and unlock the mechanism that controls the fuel flap. At this point, apply light pressure to the left side of the flap to open it and access the cap underneath. Once this is unscrewed, you can refuel and then close everything.

Watch the video!


by ScegliAuto

More videos