2021 Tesla Model Y forward collision avoidance problems

What owners report

• “On June 7, 2026, my 2021 Tesla Model Y with approximately 37,131 miles became completely unresponsive and could not be driven. Tesla Mobile Service replaced the 12V low-voltage battery on June 11, 2026. The official repair notes stated that the battery was replaced, proper operation was verified…”

  filed Aug 2, 2026

• “My car is having issues with downloading the software and installing it. It usually happens during the summer. 2025 summer i booked an appointment and visited the Tesla Service center. They diagnosed and told me the ECU is having trouble and need to replace same. Its cost around USD 4K. My car…”

  filed Jul 20, 2026

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

Related recalls

• A factory reset muted the Pedestrian Warning System (PWS) sounds
  Campaign 24V153000 · Feb 27, 2024
• Fisheye and narrow camera cable terminals were incorrectly installed in the cable harness…
  Campaign 22V317000 · May 9, 2022
• Boombox function allows sounds to be played through an external speaker while the vehicle…
  Campaign 22V235000 · Apr 12, 2022
• Boombox function allows sounds to be played through an external speaker while the vehicle…
  Campaign 22V063000 · Feb 4, 2022
• A communication error may cause false forward-collision warning (FCW) or unexpected…
  Campaign 21V846000 · Oct 29, 2021

Forward Collision Avoidance problems in other Model Y years

Other reported problem areas on the 2021 Tesla Model Y