2025 Tesla Model Y: lane keeping assist jerks the wheel

Filed Jan 26, 2026 · Driver assistance, Electrical · FL

All safety and most computer related features in the vehicle have failed. Cruise control, backup cameras, all other cameras, the navigation (assuming this is also impacting the projection of remaining battery life as my car always thinks it is at my home), warning signals for approaching obstacles/dangers, cruise control of any kind does now work, lane departure warning has failed, and automatic windshield wipers do not work. This happened without warning and was not related to an update. On January 13, 2026, the car worked in the morning and then all of these issues started happening. I made a Tesla service appointment, but they are not able to see me until February 3, 2026.

Filed Dec 2, 2025 · Brakes, Driver assistance · NJ

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

Filed Sep 15, 2025 · Driver assistance · TX

Vehicle Autopilot settings with default settings, 1) traveling marked highway speed of 75 mph, vehicle detects something in either the lane to the right or left will slam on the brakes possibly causing a rear end collision, 2) traveling at marked highway speed of 75 mph, vehicle detects curve signs either to the right or left will slam on the brakes possibly causing a rear end collision, 3) traveling in town at marked speed of 40 mph, vehicle detects a vehicle turning at a safe distance for the speed either right or left will slam on the brakes possibly causing a rear end collision. Vehicle Autopilot settings: Forward Collision Warning “OFF”, Lane Departure Avoidance “OFF”. Emergency Lane Departure Avoidance “OFF”, Automatic Emergency Braking “OFF”, Obstacle-Aware Acceleration “OFF”, will remain set for the current drive without any of the above safety issues. Next drive the Automatic Emergency Braking “ON” and the above safety issues can happen. Tesla must make immediate software improvements in the Automatic Emergency Braking system and/or allow continual “OFF” setting disabling of the Automatic Emergency Braking system.

Filed Jan 6, 2025 · Driver assistance, Visibility · NJ

Vehicle Information: • Make: Tesla • Model: Model Y • Year: 2025 Description of the Problem: After a software update pushed by Tesla, the AP4 computer in my 2024 Tesla Model Y shorted out, causing a complete failure of all systems controlled by this computer. The following safety-critical and driver-assist features have become non-functional: Cruise Control (adaptive or otherwise) Forward Collision Warning Lane Departure Warning Lane Keeping Assistance Blind Spot Warning Parking Collision Warning Full Self-Driving and Auto Park features Cameras required for Autopilot functionality Additionally, because the GPS system has failed, the vehicle’s Navigation system is inoperable. This impacts Tesla’s unique route planning feature that sets up Supercharger stops during long journeys. Without a functioning navigation system, I cannot properly plan my travel or locate charging stations, which severely affects the usability of the vehicle. Safety Concerns: The failure of these systems, especially safety features like forward collision warning, lane keeping assistance, and blind spot monitoring, puts both the driver and others on the road at risk. Losing access to safety-critical functions after an update is unacceptable and poses a serious danger to vehicle occupants and surrounding traffic. Incident Details: • The issue occurred immediately following a software update. • Tesla pushed the update remotely without providing any warning or indication of potential risks. • The failure appears to be related to a hardware short in the AP4 computer, directly caused or exacerbated by the update. Desired Outcome: • A thorough investigation into Tesla’s software update process and its effect on vehicle hardware and safety systems. • A resolution that prevents similar failures in other vehicles and ensures system updates do not compromise vehicle safety or critical functionality.

Filed Dec 20, 2024 · Driver assistance · OH

Computer system failure causing all cameras to fail, mirrors to stay darkened even in daylight, navigation system not updating, collision and lane departure feature failure. Issues were reported to Tesla and an AP 4 computer replacement were scheduled, however service has been delayed for several weeks ( now 9 Jan 2025). The car does not feel sufficiently safe to drive with the impaired mirror visibility couples with the lack of any cameras or safety features working.

Filed Dec 18, 2024 · Driver assistance, Electrical · IN

Tesla has told me the AP4 computer has failed in my car which has resulted in them having to replace it. I had this issue start right around December 7, 2024. I scheduled the soonest appointment available for December 24, 2024 however Tesla contacted me and moved my appointment because they stated that the part was unavailable at this time and should be delivered by January 24, 2025. Not offering me a rental or anything on my brand new 2025 Tesla. It has just under 1,000 miles on it and have the car since November 8, 2024. This issue impacts: emergency braking, blind spot detection, lane keep/centering, assisting with parking, automatic high beams and wipers, cruise control/ adaptive cruise control, Vehicles built in GPS to be stuck at one location every time, has made my touchscreen not automatically brighten or dim, my auto dimming mirrors be too dim in most driving conditions, constantly fail to install system improvements and safety updates, and because my vehicle keeps trying to do this, it has caused increased battery drain as well. This has increased the safety risk of my vehicle tremendously. Tesla has not seemed to publicly acknowledge the issue yet either.

Filed Dec 18, 2024 · Driver assistance · NJ

Here is my draft: Vehicle Information: • Make: Tesla • Model: Model Y • Year: 2025 Description of the Problem: After a software update pushed by Tesla, the AP4 computer in my 2024 Tesla Model Y shorted out, causing a complete failure of all systems controlled by this computer. The following safety-critical and driver-assist features have become non-functional: 1.⁠Cruise Control (adaptive or otherwise) 2.⁠Forward Collision Warning 3.⁠Lane Departure Warning 4.⁠Lane Keeping Assistance 5.⁠Blind Spot Warning 6.⁠Parking Collision Warning 7.⁠Full Self-Driving and Auto Park features 8.⁠Cameras required for Autopilot functionality Additionally, because the GPS system has failed, the vehicle’s Navigation system is inoperable. This impacts Tesla’s unique route planning feature that sets up Supercharger stops during long journeys. Without a functioning navigation system, I cannot properly plan my travel or locate charging stations, which severely affects the usability of the vehicle. Safety Concerns: The failure of these systems, especially safety features like forward collision warning, lane keeping assistance, and blind spot monitoring, puts both the driver and others on the road at risk. Losing access to safety-critical functions after an update is unacceptable and poses a serious danger to vehicle occupants and surrounding traffic. Incident Details: • The issue occurred immediately following a software update. • Tesla pushed the update remotely without providing any warning or indication of potential risks. • The failure appears to be related to a hardware short in the AP4 computer, directly caused or exacerbated by the update. Desired Outcome: • A thorough investigation into Tesla’s software update process and its effect on vehicle hardware and safety systems. • A resolution that prevents similar failures in other vehicles and ensures system updates do not compromise vehicle safety or critical functionality. Quality control for Tesla software updat

Filed Dec 17, 2024 · Driver assistance, Electrical · VA

On or around December 1 2024, the **AP4 computer** in my 2025 Tesla Model Y shorted out, causing a **complete failure** of all systems controlled by this computer. The following safety-critical and driver-assist features have become **non-functional**: 1. **Cruise Control** (adaptive or otherwise) 2. **Forward Collision Warning** 3. **Lane Departure Warning** 4. **Lane Keeping Assistance** 5. **Blind Spot Warning** 6. **Parking Collision Warning** 7. **Full Self-Driving** and **Auto Park** features 8. **Cameras** required for Autopilot functionality Additionally, because the **GPS system has failed**, the vehicle’s **Navigation system** is inoperable. This impacts Tesla’s unique route planning feature that **sets up Supercharger stops** during long journeys. Without a functioning navigation system, I cannot properly plan my travel or locate charging stations, which severely affects the usability of the vehicle. **Safety Concerns:** The failure of these systems, especially safety features like forward collision warning, lane keeping assistance, and blind spot monitoring, puts both the driver and others on the road at risk. Losing access to safety-critical functions after an update is unacceptable and poses a serious danger to vehicle occupants and surrounding traffic. **Incident Details:** • The issue occurred **immediately following a software update**. • Tesla pushed the update **remotely** without providing any warning or indication of potential risks. • The failure appears to be related to a hardware short in the **AP4 computer**, directly caused or exacerbated by the update. **Desired Outcome:** • A thorough investigation into Tesla’s software update process and its effect on vehicle hardware and safety systems. • A resolution that prevents similar failures in other vehicles and ensures system updates do not compromise vehicle safety or critical functionality.