NHTSA complaint #11702617

Owner complaint summary

SUMMARY OF SAFETY DEFECT: Multiple critical safety systems randomly disengage without warning while the vehicle is in operation, creating an immediate crash hazard. DETAILED DESCRIPTION: For approximately one month, my vehicle has experienced intermittent, unpredictable failures of multiple safety-critical systems while driving. These failures occur randomly during operation and include: Regenerative Braking System Failure (PRIMARY SAFETY CONCERN) Lane Departure Warning System Failure Automatic Vehicle Hold System Failure Traction Control System Failure Automatic Emergency Braking System Failure Electronic Stability Control System Failure SAFETY HAZARD ANALYSIS: The sudden disengagement of regenerative braking while driving poses an acute collision risk. Tesla vehicles are designed with regenerative braking as the primary deceleration method when releasing the accelerator. Drivers develop muscle memory and expectations based on consistent vehicle behavior. When regenerative braking unexpectedly disengages mid-drive, the vehicle's deceleration characteristics change dramatically and without warning, creating a dangerous situation where: The driver expects normal deceleration upon releasing the accelerator The vehicle instead continues at speed, requiring sudden brake application Reaction time is insufficient to compensate for the unexpected behavior change Rear-end collisions or other crashes become likely, particularly in traffic Similarly, the Automatic Vehicle Hold feature unexpectedly disengaging means the vehicle may roll when the driver expects it to remain stationary at traffic lights or stop signs. PATTERN AND FREQUENCY: These system failures occur randomly and unpredictably while driving. The issues sometimes resolve after: Restarting the vehicle Restarting the cent However, the failures recur without warning during subsequent driving. MANUFACTURER RESPONSE: Service Visit Date: November 28, 2024 Diagnosis: Tesla Service Center acknowledged this as a