Tesla Cybertruck's Adhesives Fail in Desert Heat; Owner Claims: "I Drove My Cybertruck at 114°F, Yet Tesla Appears to Overly Rely on Glue"
In the realm of electric vehicles, the Tesla Cybertruck continues to make headlines, but not always for the right reasons. A growing number of owners have expressed dissatisfaction over a peculiar issue involving the lightbar on their vehicles.
Duncan, a California resident and Cybertruck owner, shared his concerns on the Cybertruck Owners Club forum. During a desert trip where the outside temperature reached an astonishing 114 degrees Fahrenheit (46°C), the lightbar on his Cybertruck started to come loose. This issue was noticed upon hand-washing the vehicle, with no automatic car wash involved. The light bar is now completely detached from the windshield, with only a small section connected, as shown in a picture Duncan provided.
Duncan's Cybertruck is not the only one affected. A third owner from Dallas, Texas, has voiced similar concerns over multiple reports of adhesive failures on the Cybertruck. The remaining adhesive material forms a slight U shape, suggesting overheating. Black residue from adhesive materials is visible all over Duncan's Cybertruck.
Despite these concerns, as of August 2025, Tesla has not publicly addressed the issue of the lightbar adhesion on Cybertrucks deteriorating after exposure to extreme heat. The company's service documentation available covers general repair and removal procedures but does not mention addressing any adhesive failures related to extreme heat on this component.
A fellow Cybertruck owner, Chris from Maryland, has proposed a potential solution. He suggests that Tesla should embrace better-designed options from the aftermarket and open the API to third-party suppliers. Chris suggests a collaboration between Tesla and aftermarket manufacturers to develop a bracket for mounting the off-road light bar on the Cybertruck's windshield.
Another Cybertruck owner, Jay, has expressed interest in purchasing the detached lightbar from Duncan for the purpose of creating an aftermarket bracket mount. Jay's hope, like Duncan's, is for a permanent fix to the adhesive issue on the Cybertruck.
Tesla enthusiast Tinsae Aregay, who can be found on Twitter at @TinsaeAregay for daily Tesla news, covers the story of the detached Cybertruck lightbar. As the Cybertruck community waits for a response from Tesla, owners continue to share their experiences and hope for a resolution to this unusual issue.
[1] Cybertruck Owners Club forum: https://www.cybertruckownersclub.com/forum/ [2] Tesla service documentation: https://www.tesla.com/support/service [3] Tesla service documentation: https://www.tesla.com/support/service/repairmanual
- The lightbar adhesion on the Cybertruck seem to deteriorate after exposure to extreme heat, as evidenced by several Cybertruck owners' experiences.
- Chris from Maryland suggests that Tesla could collaborate with aftermarket manufacturers to develop a bracket for mounting the off-road light bar on the Cybertruck's windshield, as a potential solution to the adhesive issue.
