What are the reasons for the sunroof leakage in the new Mondeo?
2 Answers
The reasons for the sunroof leakage in the new Mondeo are as follows: Aging of the sealing strip: Without long-term maintenance, the sunroof sealing strip will age. Deformation of the sliding rail: Driving on bumpy roads with the sunroof fully open can cause significant vibration between the sunroof and the sliding rail, leading to component deformation. Blockage: Clogged drainage pipes. The methods to address sunroof leakage are as follows: Replace the sealing strip: Replace the sunroof sealing strip. Clean the drainage channel: Remove small sand particles and dust from the sunroof drainage channel and ensure the sunroof is properly closed. Unclog the pipes: Clear the drainage pipes. The function of a car sunroof is to provide ventilation.
I also experienced a similar issue with my new Mondeo's sunroof leaking. Later, I went to a repair shop to check the cause. It was mainly due to clogged drainage holes. The car was parked under a tree for a whole summer, accumulating a lot of leaves and small dust, which blocked the drainage pipe. With nowhere to go, rainwater seeped in through the gaps in the sunroof. The sunroof is designed with soft rubber sealing strips around it, but if the installation was not properly done or slightly misaligned during the factory assembly, water could leak in. I learned that the sunroof needs regular cleaning—at least every quarter, use compressed air to blow out the drainage holes or manually clear them with a thin string. Ignoring leaks can be troublesome, as water can flow under the car's carpet, damaging electronic equipment or causing moldy odors, which can even pose safety hazards while driving. During the new car warranty period, you can get it checked and fixed for free, so don’t worry about small issues turning into big ones.
