Do it yourself
Frequently asked questions about cars and motorcycles

How to Open the Doors of a Smart Fortwo with a Flat Remote Battery

Model: Smart Smart 451 - Years 2007-2015
Part: Door lock

Here are the instructions to open the doors of the vehicle in case of an emergency with a flat remote battery on a Smart Fortwo. To open the doors, simply insert the physical key into the lock cylinder located under the driver's side door handle, turning it to unlock the doors. Use the same key to start the engine. Then, restore the remote's functionality by opening it and replacing the battery with a new one (with the same specification).

Posted on 5 August 2026 by ScegliAuto

Video tutorial

Related tutorials

Smart (2014-2022 / 453) In this short video, you will learn how to replace the battery in the remote control of the New Smart ForTwo 453. The procedure is very simple; prepa…
Smart (2007-2015 / 451) In this tutorial, you will see how to open the remote for the Smart ForTwo 451, which is necessary if you need to replace the battery or the outer ca…
Smart (2003-2005 / Roadster, 452) In this video, you can see how to replace the remote battery of the Smart ForTwo. For this simple operation, you only need a small flat-head screwdri…

Other guides you may be interested in

How to Reset the Central Locking of the Volkswagen Golf 4?

If the central locking system of the Volkswagen Golf 4 is not working, it is likely necessary to reset the system: to do this, open the driver's door and detach the side panel of the dashboard next to the steering wheel. Under this panel, you will find the fuses, including the one for the central locking, which is indicated in the manual as number 14. To reset the system, remove this fuse from its housing, then reinsert it or replace it with a new one of the same amperage: this will reset the central locking system.

Watch the video!


by ScegliAuto

More videos