Tesla's Cybertruck Faces Melting Adhesive Issues in Scorching Desert Conditions - Driver Complains: "Even at 114°F, Tesla Seems Overly Dependent on Glue"
In the world of electric vehicles, the Tesla Cybertruck continues to make headlines, but not always for the right reasons. Tinsae Aregay, a writer following Tesla and the EV space, has been covering the latest developments, including the ongoing issue with the Cybertruck's lightbars.
Duncan, a California resident and Cybertruck owner, has reported that the lightbar on his vehicle, held in place with glue, is beginning to fall off after exposure to desert heat. This incident occurred during a period when the outside temperature reached 114 degrees Fahrenheit (46°C). The light fixture started to come apart during hand-washing, not from any car wash machinery. The remaining adhesive material forms a slight U shape, possibly due to overheating.
This issue is not unique to Duncan. Many Cybertruck owners on the forum agree that they're unhappy with Tesla's heavy reliance on glue when assembling the Cybertruck. A third Cybertruck owner from Dallas, Texas, acknowledges multiple reports of adhesive failures on the Cybertruck.
The picture Duncan posted on the Cybertruck Owners Club forum shows the top of his Cybertruck windshield, with the light bar completely detached, leaving only a small section connected for electronics. Black residue from the adhesive materials used by Tesla to fix the light bar to the windshield is visible.
Despite the concerns, Tesla has not officially addressed the issue. There is no indication that Tesla has provided a permanent fix such as installing proper brackets instead of relying on glue.
Some Cybertruck owners have suggested that Tesla should collaborate with aftermarket manufacturers to develop sturdier mounting brackets for the lightbars rather than sticking them directly to the glass with adhesive. Aftermarket suppliers like Unplugged Performance offer plug-and-play double-row LED lightbars designed for the Cybertruck with bracket mounting options, which may provide a more robust alternative.
However, these are third-party products and not Tesla-issued solutions. Some owners, like Jay from Texas, have expressed interest in purchasing Duncan's detached lightbar to fabricate a bracket mount. Tesla may replace the lightbar for owners experiencing issues, but a permanent fix remains elusive.
Chris, a Cybertruck owner from Maryland, proposes a potential market for a bracket-mounted lightbar instead of the current adhesive method. He suggests Tesla should consider better-designed options from the aftermarket and open the API to third-party suppliers.
As the summer heat continues to test the resilience of the Cybertruck, some owners are left hoping for a permanent fix to the adhesive issue. Follow Tinsae Aregay on Twitter for daily Tesla news at @TinsaeAregay.
[1] Cybertruck Owners Club forum post by Duncan, August 2025. [2] Unplugged Performance Cybertruck lightbar product page. [3] Tesla Cybertruck forum discussion on lightbar mounting solutions. [4] Tesla's official statement on the Cybertruck's assembly methods, as of August 2025.
- The troublesome issue with the Cybertruck's lightbars, reported by Duncan and other owners, is disheartening for many, as they wish for Tesla to address the use of glue in assembling the vehicle and provide a more permanent solution such as installing proper brackets.
- As the summer heat poses a challenge to the resilience of the Cybertruck, owners are eagerly seeking alternative solutions from aftermarket manufacturers, such as bracket-mounted lightbars from Unplugged Performance, in hopes of a more robust and long-lasting fit.
