What Causes the Large Gap in the Window Trim of the New Mondeo?
4 Answers
Loose regulator screws, damaged window regulator, or damaged motor gear can cause a large gap in the window trim of the New Mondeo. Loose Regulator Screws: Inspect the regulator of the glass door. Frequent opening and closing of the glass door can cause the regulator screws to loosen over time. Damaged Window Regulator: If the window regulator is worn or damaged, the inability to manually operate the window indicates a faulty regulator. Damaged Motor Gear: For electronically controlled glass doors, damaged motor gears or poor circuit contact can prevent the door from closing tightly, resulting in an increased gap. Solutions for the Large Gap in the New Mondeo Window Trim: Tighten the screws if they are loose, replace the window regulator if it is damaged, and repair or replace the motor gear if it is faulty. Correct Method for Installing Window Trim: Clean the installation area with automotive cleaner or alcohol. After determining the correct position, peel back about 3 cm of the 3M adhesive at both ends of the trim. Avoid touching the adhesive surface with fingers. Align the trim and slowly peel off the red adhesive strips on both sides. Ensure the trim is firmly attached by pressing it down firmly with a towel.
I just bought a new Mondeo recently, and after driving it for a week, I noticed that the seams of the window trim strips are a bit too wide. It’s probably due to poor tolerance control during production, and the assembly might have been a bit sloppy. For a brand-new car, such flaws are quite noticeable. I suspect thermal expansion and contraction of the materials also play a role—metal strips expand in the summer heat and shrink back in winter, causing the gaps to vary in size. If the seams are too wide, rainwater or dust can easily get into the door, potentially leading to rust or strange noises over time. My personal suggestion is to visit a 4S shop for an inspection as soon as possible. They can use professional tools to adjust the fixing clips, and minor issues like this can usually be fixed. Don’t wait until the warranty expires to address it. After all, window trim strips aren’t just for aesthetics—they also serve a sealing function. If the gaps are too wide, not only does it affect the car’s appearance, but wind noise at high speeds also becomes louder, compromising driving comfort.
I've loved tinkering with cars since childhood and have studied the issue of large gaps in the window trim on the new Mondeo. There are quite a few reasons for this. It could be misalignment during installation, where workers were careless with positioning; or material deformation itself, like plastic strips expanding at different rates when heated, naturally widening the gaps. Loose tolerances in design are also a common factor, such as inaccurate cutting or assembly before the adhesive fully dried. I recommend checking if the clips are loose yourself and trying to reattach them with soft adhesive as a simple fix. However, if it's still under warranty, it's better to have it professionally repaired to avoid damaging other parts during disassembly. Additionally, overly large gaps can trap dirt, so regular cleaning can reduce wear and extend the lifespan.
I pay close attention to automotive details, and this issue is commonly seen in the manufacturing process. The excessive gap in the window trim of the new Mondeo may stem from loose design tolerances, imprecise assembly procedures, or quality control lapses in materials. Plastic or aluminum alloy exhibits significant thermal expansion and contraction, causing gaps to widen in hot weather and shrink back in cold conditions. Long-term vibration may also enlarge the gaps. It's recommended that users measure the gap width with a ruler and compare it to the manual's standards. If it exceeds the limit, visit the dealership promptly for tightening and adjustment. Minor issues are easy to fix, but delays can affect sealing and wind noise performance. Don't panic if you encounter this with a new car—most cases can be resolved easily.
