Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Program the Key of a Smart 454 After Replacing the Battery?

Model: Smart Smart Fourfour1, 454 - Years: 2004, 2005, 2006
Part: Key

See other generations:
Video tutorial

When the battery of the Smart 454 ignition key runs low and needs replacing, it may be necessary to program its code; otherwise, the ECU will not recognise it, preventing you from starting the engine or unlocking the car. This video shows the procedure using the Obdstar program, connected directly via cable to the vehicle's OBD port.

By following the guided steps of the software, you will reach the programming stage, which can be confirmed by starting the engine.


Updated on 19 August 2026 by ScegliAuto


Related tutorials

Where is the OBD Port on the Smart Forfour 454
Where is the OBD Port on the Smart Forfour 454
Smart (2004-2006 / Fourfour1, 454) If you intend to perform a detailed analysis on the ECU of your Smart Forfour 454 but do not know where the OBD port is located, just read the follow…
Where is the OBD port located on the Smart 454?
Where is the OBD port located on the Smart 454?
Smart (2004-2006 / Fourfour1, 454) In the following guide addressed to those of you who own a Smart 454, we will help you easily find the OBD port located in the cabin. First, reach th…
Replacing the Headlight Bulb on the Smart Forfour 454
Replacing the Headlight Bulb on the Smart Forfour 454
Smart (2004-2006 / Fourfour1, 454) In this video, we will see how to remove and replace the dipped beam xenon bulb of the Smart Forfour 454 with the headlight removed. First, remove th…

Other guides you may be interested in

    Frequently Asked Questions

    • Smart 1998-2007 - What to do if the key gets stuck in the Smart? Read answer

How to Open the Fuel Filler Flap in the Hyundai i30?

In this tutorial, you will learn how to open the fuel filler flap in the Hyundai i30, a very simple operation that follows the typical procedure of most vehicles. First, unlock the locks using the designated button on the remote, then open the driver's door, locate the release lever on the left side of the seat, and operate it. Next, move to the fuel filler flap, open it completely, unscrew the cap, and refuel as needed. To close the flap, simply press it gently.

Watch the video!


by ScegliAuto

More videos