Late last month, Tesla initiated yet another recall for its highly-publicized Cybertruck, and the reason is concerning: pieces are falling off.
This time, the recall, affecting 6,197 Cybertrucks, stems from a faulty installation of the optional, dealer-installed off-road lightbar. According to Tesla, the use of an incorrect surface primer drastically increased the risk of the lightbar becoming unattached.
As you can imagine, a lightbar separating from the vehicle at speed essentially transforms into a dangerous projectile, posing a significant risk to the Cybertruck’s occupants and those around it.
The Off-Road Promise Meets a Sticky Problem
The Cybertruck has been marketed heavily as a rugged and fairly capable off-roader since its inception. While features like electronic locking differentials and various off-road modes are included, it’s not truly designed to compete with dedicated performance trucks like the Ford F-150 Raptor or Ram TRX.
To enhance visibility for those using the vehicle off-road, Tesla offered an optional, dealer-installed lightbar. While the option isn’t readily visible in the current Cybertruck configurator, it is listed in the online service portal.
The lightbar is designed to be glued to the top section of the windshield.
The Adhesion Failure: A Closer Look at Primer
The root of this latest recall is a failure in the bonding process.
According to the Cybertruck’s service manual, Tesla specifies the use of a primer to prep the underside of the lightbar for proper adhesion. In applications outside the automotive industry, such as joining PVC pipe joints, primer is critical for achieving a strong, permanent bond.
- Primer’s Function: Primer is generally used to ensure better-than-surface-level adhesion between two objects.
- The Chemical Process: For instance, in PVC assembly, a purple primer is applied first to clean and chemically soften the material, initiating a reaction that slightly melts the outer layer. A solvent cement is then applied to further melt the material, completing the bond. This process is more akin to soldering than welding.
The use of the wrong primer in the Cybertruck lightbar installation means this critical chemical process failed to happen correctly, leading to a bond that isn’t strong enough to withstand driving conditions.
If you own a Cybertruck with the off-road lightbar installed, it’s highly recommended you contact Tesla service immediately to confirm if your vehicle is included in this recall.
What are your thoughts on this latest Cybertruck recall? Share your comments below!
