Diagsheet

2019 Tesla Model 3 · symptom sheet

Brakes on its own (automatic emergency braking)

  • 77owner reports
  • 21,100median miles
  • 3involved a crash

Newest report Apr 3, 2026 · checked Sep 9, 2026

230 of the 610 complaints on this car are about collision avoidance. 77 of those describe phantom braking.

Tick what matches of 77 reports

22
44
19
25
4

What got replaced

Owners who name the part that was replaced mention the software (5 reports) and the radar or camera sensor (4 reports).

Recalls and investigations

3 recalls on collision avoidance cover the 2019 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.
21V-387May 25, 2021
Service Brakes, Hydraulic:Foundation Components:Disc:Caliper

Tesla, Inc. (Tesla) is recalling certain 2019-2021 Model 3 and 2020-2021 Model Y vehicles. The brake caliper bolts may be loose, allowing the brake caliper to separate and contact the wheel rim.

Risk and remedy
Risk: Contact with the rim may cause a loss of tire pressure, increasing the risk of a crash.
Remedy: Tesla Service will inspect and tighten, or replace the caliper bolts as necessary, free of charge. Owner notification letters were mailed July 23, 2021. Owners may contact Tesla customer service online by visiting www.tesla.com/support/contact or by calling 1-877-79-TESLA (or 1-877-798-3752). Tesla's number for this recall is SB-21-33-002.

NHTSA investigations into collision avoidance on the Model 3

DP23-002opened Jun 29, 2023
Speed control · model years 2017 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 2018 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

When it happens

The middle half of failures fell between 8,500 and 41,000 miles, from the 18 reports that gave a mileage.

119
720
321
3122
2523
424
525
126

What owners wrote

“Phantom braking. During Basic autopilot (steering, braking in one lane) at times system applies brakes for no reason, which could cause rear-end collision with the following car. Usually happens at freeway speeds, with NO cars around the vehicle and the road is unevenly sightly with small grades or going past the crest of a large grade roadway happens when the vehicle peaks grade and descends down.”

Filed Jun 6, 2022

“Car will break "phantom breaking" slowing down +20mph very quickly with nothing on the highway in front or behind. It typically happens before bridges, major shadows on highway. There are 2 places in Little Rock Arkansas on the highway that it does it every single day in the same spot with nothing around! Has nearly caused people to crash into me from behind. I stopped driving with the autopilot.”

Filed Jun 5, 2022

“While driving along the interstate on my commute at freeway speeds 60-70 miles per hour, the emergency braking system will suddenly engage, and the car will issue a collision warning. During these incidents there is no car at risk for striking my vehicle or slowing down in front of my car. My commute usually occurs in the evening and early in the morning. This typically happens at least once during my work week.”

Filed Mar 3, 2022

“going down the highway (I75) and at a certain exit north of Sarasota FL the car just randomly and unexpectedly brakes (phantom braking) No cars around, just straight highway Has happened several times in this spot and also other spots”

Filed Feb 23, 2022

Should you keep driving it?

This page can't tell you that. 3 of 77 reports involved a crash and 2 people were hurt. 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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