Experienced Issues with Cybertruck: User Reports Brake Overheating and Performance Reduction After Descent from Mt. Baldy, Prompting Immediate Service Visit
In a recent road trip, a brand-new 2025 Tesla Cybertruck faced some unexpected challenges while descending Mount Baldy near Los Angeles. The owner, Gary, noticed that the regenerative braking system may not have been functioning properly, leading to potential issues with brake overheating.
Halfway down the mountain, a "Brakes Too Hot - Braking Performance Reduced" warning flashed on the vehicle's instrument panel, indicating that the friction brakes were overheating due to heavy and prolonged use. In such situations, drivers are advised to reduce speed, allow the brakes to cool down, and consider using lower gears or a lower speed setting on autopilot to minimize brake usage.
During the descent, the regenerative braking queue was grey, not green, suggesting that the regenerative braking was indeed limited. This meant that the conventional brakes had to dissipate all the kinetic energy as heat without assistance, potentially leading to brake fade, reduced braking performance, and potential damage or failure of the brake system.
Gary took the Cybertruck to the Tesla Service Center for inspection. Interestingly, the battery percentage did not increase during the trip down from Mount Baldy, despite the expectation that regenerative braking would recharge the battery on the way down.
Tesla recommends that Cybertruck owners have their brake fluid checked and potentially replaced more frequently than other models, especially if they frequently tow, drive in mountainous areas, or engage in performance driving, particularly in hot and humid environments. The company also suggests that drivers can choose to have the regular braking system automatically engage whenever regenerative braking is limited, to maintain consistent deceleration.
However, the "Apply Brakes When Regenerative Braking is Limited" feature may not operate if the brakes are extremely hot. Some Tesla Cybertruck owners have reported experiencing the same "Brakes Too Hot - Braking Performance Reduced" warning while descending steep grades.
Gary concluded that the issue with the brakes may be either software- or hardware-related. He is currently working with Tesla to diagnose and resolve the problem, ensuring a safe and enjoyable driving experience with his new Cybertruck.
Regenerative brakes are a key feature in Tesla vehicles, including the Cybertruck, as they slow the vehicle down by converting kinetic energy into electrical energy stored in the battery. However, it is crucial for drivers to be aware of potential issues and take necessary precautions, especially when driving in challenging conditions.
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