Diagsheet

2020 Tesla Model Y · symptom sheet

Adaptive cruise or lane keeping misbehaves

  • 51owner reports
  • 3,500median miles
  • $2,666median quote
  • 1involved a crash

Newest report Feb 25, 2025 · checked Sep 9, 2026

135 of the 275 complaints on this car are about collision avoidance. 51 of those describe driver assist, which makes it the most reported problem on the 2020 Model Y.

Tick what matches of 51 reports

5
6
9
36
15

What got replaced

Owners who name the part that was replaced mention the software (15 reports) and the camera (9 reports).

Recalls and investigations

2 recalls on collision avoidance cover the 2020 model year. A recall on the same system isn't always the same failure, so read the defect text.

24V-153Feb 27, 2024
Forward Collision Avoidance: Warnings:External/Pedestrian Alert

Tesla, Inc. (Tesla) is recalling certain 2013, 2018-2021 Model S, 2020-2021 Model X, 2018-2022 Model 3, and 2020-2022 Model Y vehicles. A factory reset muted the Pedestrian Warning System (PWS) sounds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 141, "Minimum Sound Requirements for Hybrid and Electric Vehicles."

Risk and remedy
Risk: Pedestrians may be unaware of an approaching vehicle if the PWS sounds are muted, increasing the risk of a crash.
Remedy: Tesla released an over-the-air (OTA) software update, release 2023.44.30.14, free of charge. Owner notification letters were mailed April 27, 2024. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-24-00-006.
21V-846Oct 29, 2021
Forward Collision Avoidance: Sensing System: Camera

Tesla, Inc. (Tesla) is recalling certain 2017-2021 Model S, Model 3, Model X, and 2020-2021 Model Y vehicles operating software version 2021.36.5.2. A communication error may cause false forward-collision warning (FCW) or unexpected activation of the automatic emergency brake (AEB) system.

Risk and remedy
Risk: Unexpected activation of the AEB system may cause the car to stop suddenly, increasing the risk of a crash.
Remedy: Tesla Service has released an over-the-air (OTA) software update, free of charge. The recall began October 25, 2021. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-21-00-004.

NHTSA investigations into collision avoidance on the Model Y

DP23-002opened Jun 29, 2023
Speed control · model years 2019 to 2023

Sudden unintended acceleration. Open.

NHTSA summary
The Office of Defects Investigation (ODI) received a petition requesting that ODI reevaluate its decision to deny DP20-001 on the basis that intermittent high electrical current demands on the vehicles' 12VDC systems may have caused some or all of the incidents examined by ODI in DP20-001. The petitioner bases this information on a review of open-source research and the DP20-001 denial. The petition and related materials can be reviewed at NHTSA.gov under the following ODI number: 11528471.
PE22-002opened Feb 16, 2022
Collision avoidance · model years 2021 to 2024

Unexpected brake activation. Closed jun 29, 2026.

NHTSA summary
On February 16, 2022, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE22002) to investigate reports of unexpected deceleration while driving with the adaptive cruise control system engaged in Model Year (MY) 2021 – 2022 Model 3 and Model Y vehicles manufactured by Tesla. The subject systems include Autopilot (all versions), Full Self-Driving (FSD) and Traffic Aware Cruise Control (TACC). These complaints have been colloquially referred to as “phantom braking”. ODI opened PE22002 to determine the scope and severity of the potential problem and to assess any resulting safety issues in the subject vehicles. The alleged defect is an unexpected and unrequested vehicle deceleration triggered by the subject system during subject system engagement. The alleged defect does not occur when the subject system is not in use and is separate and distinct from Automated Emergency Braking (AEB). During vehicle operation, AEB is actively monitoring in the subject vehicles regardless of subject system and its intervention is accompanied by audible and visual collision warnings. A Vehicle Owners Questionnaire (VOQ) trend originating in November 2021 prompted ODI to open PE22002. VOQ narratives reported unexpected brake activation while using TACC, Autopilot or FSD. The trend grew from 99 by the end of 2021 to 314 by February 16, 2022, when PE22002 was opened. ODI sent Information Request (IR) Letters to Tesla on May 4, 2022, and July 11, 2024, to request salien

What owners paid

5 of the 51 reports quote a price. Each dot is one quote. The middle half runs $2,400 to $3,000.

$2,400$2,666$3,000
$0k$2k$4k$6k$8k

When it happens

The middle half of failures fell between 3,000 and 20,000 miles, from the 9 reports that gave a mileage.

320
121
2322
1623
624
225

What owners wrote

“Have had several issues with phantom braking. When in cruise control or auto drive there are times nothing is in the roadway but the vehicle will brake in middle of hwy. very dangerous”

Filed Feb 15, 2023

“While driving on highway using cruise control, the vehicle (without the driver's assistance) applied brakes to quickly slow the rate of speed. This occurred three times in the span of ten minutes. The weather was sunny and no other vehicles or objects were in the vicinity of my vehicle. After the third occurrence, I stopped using cruise control for the remainder of the trip.”

Filed Dec 3, 2022

“While on cruise control at @72mph the car has been “phantom” braking. The last time there were flurries, but the first several times there was nothing impeding the car nor were any vehicles within camera range. This is a very unsettling feeling. No, no and no. There have been reports to your site with this regard. tyvm”

Filed Oct 25, 2022

“With car in cruise control on freeway, sudden and hard application of brakes by vehicle, no human input.”

Filed Jun 30, 2022

Should you keep driving it?

This page can't tell you that. 1 of 51 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation.

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