Lane Departure Related Problems of the 2021 Tesla Model 3

Table 1 shows three common lane departure related problems of the 2021 Tesla Model 3. The number one most common problem is related to the assist (14 problems). The second most common problem is related to the warning (eleven problems).

Table 1. Lane Departure related problems of Tesla Model 3

Problem Category Number of Problems
Assist problems
14
Warning problems
11
Blind Spot Detection problems
4

Recently reported Lane Departure problems of the 2021 Tesla Model 3

The Assist problem

Tesla full self driving software malfunctioned and turned into oncoming traffic lanes instead of crossing over to the correct opposite side of the roadway. This occurred after getting off a on ramp in ukiah, California around 2am Nov 15, 2025.   Read details...

The Warning problem

On July 1, 2026, the vehicle was serviced by the manufacturer for gps and camera malfunctions, and the vehicle computer was replaced. On the morning of July 2, 2026, during the first use of autopilot after that repair, the vehicle experienced repeated serious driver-assistance malfunctions over a   Read details...

The Blind Spot Detection problem

Component/system failure: total failure of the autopilot ecu (das computer) and the front-end module (fem) wiring harness. Incident description: my 2021 Tesla Model 3 (37,000 miles) experienced a catastrophic and "silent" failure of the entire vehicle vision suite and all active safety   Read details...


Lane Departure related problems in other Tesla Model 3 model year vehicles:



Model 3 Service Bulletins
Model 3 Defect Investigations