Initialise the Power Windows

Last updated: June 10, 2026

If the one-touch (auto up/down) function on your Tesla Model S (2012–2021) has stopped working — usually after the 12 V battery was disconnected or went flat — the windows just need re-initialising. It’s a quick job with no tools.

When You Need This

• After disconnecting or replacing the 12 V battery.
• If a window only moves while you hold the switch and won’t auto-close or auto-open.

Re-initialising the Windows

1. Close the doors and sit in the driver’s seat with the door closed.
2. Using the window switch, raise the window fully until the motor stops.
3. Lower the window fully until the motor stops.
4. Raise the window fully again until the motor stops — the procedure is complete.

Repeat for any other window that has lost its one-touch function.

If It Still Won’t Work

• Let the motor stop at each end before changing direction.
• Re-seat the 12 V battery connections if you’ve just done battery work.
• A motor or switch fault can store a code — look it up on autodtcs.com.

Frequently Asked Questions

Why did my Model S windows stop auto-closing?

Disconnecting the 12 V battery wipes the window calibration — re-initialise them.

Do I need a tool?

No — the up/down/up cycle with the switch does it.

Do I have to do all the windows?

Do any that have lost one-touch — each is calibrated separately.

What does the up/down/up cycle do?

It teaches the module the full travel, restoring one-touch operation.

If you’ve just reconnected the battery, see our Model S 12V battery guide.