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Frequently asked questions about cars and motorcycles

How to Unlock the Smart Radio?

Model: Smart Smart 450 - Years 1998-2007
Part: Car stereo

To unlock the Smart radio, you need to disassemble the device to read the serial number written on the sticker inside: once you have the serial number, you must enter it into specific applications to obtain the unlock code. This code should be entered by pressing the number 1 as many times as the first digit, the number 2 as many times as the second digit, and so on. After all the numbers have been entered, press the CD button located on the left side of the radio to confirm the entry and unlock the device.

Updated on 10 August 2026 by ScegliAuto

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How to Replace the Remote Battery for the Volvo XC40?

In this tutorial, you will see how to replace the battery in the remote for the Volvo XC40, a very simple and quick operation. For this, you will need a replacement battery of type CR2032 and possibly a small flathead screwdriver. First, remove the front cover by pressing the button on the metal ring, then locate the second button, press it as well, and remove the opposite cover. Next, open the circular cap, take out the old battery, and insert the new one in the opposite direction. Finally, reassemble everything.

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