Why the new HV Battery Seal Upgrade is important

Tesla is retrofitting all Model S and Model X vehicles built between January 2021 and September 22, 2022, with an optimized seal for the high-voltage battery at no cost. The update provides better protection for the battery against water ingress during heavy rain or flooding.

Which vehicles are affected?

  • Series: Model S & Model X

  • Production period: 01/2021 – 22.09.2022

  • Regions: USA & Europe (Canada currently excluded)

What is being done to your Tesla?

Old Component New Component Advantage
5 Flood Port Plungers with simple drainage 5 revised plungers with improved water barrier Higher protection against water during flooding

Tesla replaces all five plungers in the battery housing. This takes about 45 minutes and is 100% free of charge , even if your high-voltage warranty has already expired (goodwill policy).

This is how the service works

  1. App notification: Tesla informs you as soon as parts are available at your service center.

  2. Book an appointment: Simply choose your desired date via the Tesla app.

  3. On-site installation: Service technicians replace the plungers – no mobility restriction, as the downtime is short.

Tips for flood situations

  • Park the vehicle higher in time – avoid parking in underground garages.

  • Avoid driving through standing water; even 30 cm of water can endanger the electronics.

  • If your Tesla does submerge deeper, contact service, even if no error is displayed.

Our conclusion

With the free HV battery seal upgrade, Tesla once again demonstrates its proactive service policy: more safety at no additional cost – even outside the factory warranty. Keep an eye on your Tesla app and book the appointment as soon as your parts are available.