What to Do If the Dash Cam Keeps Falling Off the Windshield?

[VonDiana]

Solutions for a falling dash cam are as follows: 1. Use 3M adhesive and a bonding promoter to secure the dash cam firmly. 2. Before installing the dash cam, ensure the installation area on the windshield is clean. 3. The adhesive-mounted dash cam should be installed on a dry surface. You can use a hairdryer to heat the adhesive for better bonding. 4. For suction cup-mounted dash cams, apply a small amount of water to the suction cup before attaching it to the windshield for a more stable hold. Installation instructions for dash cams are as follows: (1) Before installing the dash cam, first determine the installation location. It is best to choose a central position, slightly to the right of the rearview mirror, as this provides a straight filming angle and more convincing evidence. Many dash cams are designed in the form of a rearview mirror, allowing direct replacement of the original rearview mirror. (2) After determining the installation location, the owner should plan the wiring route virtually. Once the general wiring path is understood, determine the power cord.

[VanAlivia]

I've also experienced the issue of dash cams constantly falling off, mainly due to three common mistakes. First, the glass surface isn't cleaned properly—dust and grease can cause the adhesive to fail. Remember to thoroughly wipe it down with alcohol pads. Second, choosing the wrong adhesive is crucial; regular double-sided tape simply can't hold up and melts in summer heat. You need industrial-grade VHB tape or 3M dual lock fasteners. Third, temperature matters—use a hairdryer to warm both the glass and adhesive surface before applying, then press firmly for 30 seconds. Pro tip: Adding a silicone spacer between the mount and glass helps relieve thermal expansion stress. If all else fails, switch to a suction cup mount. The newer hidden ETC-style mounts can even integrate dash cam functionality for a two-in-one solution.

[SarahLee]

Veteran driver shares a few reinforcement tips: First, clean thoroughly – after wiping with glass cleaner, use a degreaser for treatment. The key is to use adhesion promoter! A small bottle from an auto parts store will do; apply it on the glass, let it dry, then apply the adhesive. Don’t rush when attaching; after pressing firmly, it’s best to temporarily secure it with tape for 12 hours. If the adhesive has failed once, replace it entirely, and use a fishing line to slowly scrape off any residual adhesive film. For rear windshields with heating wires, avoid these areas when attaching. Lastly, remember that sudden braking can also shake the recorder loose, so try to mount it in the triangular area behind the rearview mirror where vibration is minimal.

[LaZane]

From a tool perspective for solutions: For adhesive removal, Turtle Wax Glass Adhesive Remover is recommended as it won't damage the film. For adhesive replacement, the first choice is 3M VHB tape with 0.8mm thickness, which has five times the load-bearing capacity of ordinary adhesive. As an emergency solution, static cling sheets can be used as a temporary fix, available on Taobao for ten yuan per hundred sheets. The ultimate solution is to modify the bracket by purchasing a suction cup adapter base paired with a silicone anti-slip pad. A reminder: Owners with metal films on their windshields should be especially cautious, as the metal layer can render static cling ineffective, necessitating the use of physical adhesive types. Before application, turn on the electric heating for ten minutes to increase initial adhesion by 50%.