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

Replacing the Key Fob Battery for Smart Fortwo 451

Model: Smart Smart 451 - Years: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
Part: Key

See other generations:
Video tutorial

In this video tutorial, you will learn how to disassemble and replace the battery in the remote key fob of a Smart 450 and 451 in simple steps. To do this, first take your remote and use something flat and thin to open it into two parts, prying at the central section; this will give you access to the circuit board and the battery.

At this point, remove the old battery and replace it with the new one of the correct type; simply insert it the right way round and reassemble the remote, ensuring the two halves fit together as shown in the video!


Updated on 19 April 2026 by ScegliAuto


Related tutorials

Replacing Key Battery on Smart Fortwo 451
Replacing Key Battery on Smart Fortwo 451
Smart (2007-2015 / 451) Today, you will learn how to open the key remote and replace the internal battery of a Smart Fortwo 451; this operation is very simple and does not r…
How to Open the Remote for the Smart ForTwo?
How to Open the Remote for the Smart ForTwo?
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…
Replacing the Key Battery of the Smart Fortwo
Replacing the Key Battery of the Smart Fortwo
Smart (2007-2015 / 451) Today, in this short and simple guide, see how to disassemble and replace the battery of the remote key for the Smart Fortwo. First, take the remote …

    Frequently Asked Questions

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

How to Reset the Tyre Pressure Warning Light on the Jeep Renegade?

To reset the tyre pressure warning light on the Jeep Renegade, inflate the tyres until they reach the recommended pressure: this value is indicated on the sticker attached to the driver’s door pillar. Once the tyres are properly inflated, navigate through the menu that appears on the instrument cluster until you find the tyre pressure option. At this point, press and hold the OK button on the right side of the steering wheel to make the warning light disappear.

Watch the video!


by ScegliAuto

More videos