Unlock your Mercedes Citan radio

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Enter your radio's serial number or see the examples.
vehicle radios unlocked

How do I find my Mercedes Citan security code?

When your Mercedes-Benz Citan's radio, stereo or sat nav becomes disconnected from the battery, usually due to a garage service or a low battery, it automatically locks and begins to ask for a radio code. As this is an anti-theft feature it's not possible to unlock a Mercedes radio without this code, but getting hold of your radio code is an easy process that can be done in minutes. Many dealerships and online generators decode the radio code from the VIN number, but this code will be incorrect if the radio has ever been changed in the vehicle's lifetime.

The most accurate way to get your Mercedes-Benz Citan's radio code is by decoding it from the radio's serial number. This will look like one of the following examples:

The last 4 digits of your Citan radio's serial number are known as the security code or precode - we use this to generate the radio code for your Citan radio, also known as the authentication key. Remember that the security code always follows the format A123 (1 letter followed by 3 numbers) so even if it looks like 5123, it's actually S123. There are two methods to find your Citan's security code - a fast one and a slightly slower one.

Method 1: the quick way

On some Mercedes Citan radio or sat nav models it's possible to reveal the serial number on the display without removing your radio. While the radio is asking for a code, hold down buttons 1 and 6 on your radio for up to 10 seconds - if it works this will show the last 4 characters of your serial number on your display. This will always be 1 letter followed by 3 numbers, e.g. A123. If this doesn't work, try holding 2 and 6 instead. If your serial number still doesn't appear on your radio's display, you'll have to remove your radio to reveal the serial number on its label.

Method 2: removing your radio or sat nav

Don't worry – removing your radio is not as hard as it sounds, but it is the hardest part of getting a radio unlock code, which means that once you've done it the rest is easy. First, look carefully around the front of your radio for 2 or 4 radio removal slots.

If your radio removal slots are spaced apart like in image 1, you will need these single-din radio removal keys.

Removing a standard radio with radio removal keys
Image 1

If the slots are spaced wider apart, you will need these double-din removal keys. In a pinch you can also try using everyday items that will fit into the radio removal slots, like thin screwdrivers or barbeque skewers, bearing in mind you'll need one for each slot.

Once you have your radio removal tools, insert them into the slots, pushing until you feel some resistance or hear a click. Finally, start pulling your radio unit out while pushing out on the removal tools - this will give them enough grip to pull out the radio. In most cases you won't need to disconnect any wires - simply take pictures of all the labels on the radio and insert it back into the dash.

If you'd prefer to see this process visually, see this video.

If your Mercedes Citan navigation system looks like the one pictured below, the hardest part will be removing the outer plastic trim or fascia. This is held in place by clips at the back of the radio, as shown by the locations of the arrows (image 1). You should be able to undo these clips by firmly pulling away from the radio with your fingers or a flathead screwdriver - in a pinch you may also be able to use a bread knife. Once you've undone the clips, slowly but firmly pry the plastic trim away from the radio, revealing the 4 screws keeping the radio in place. After unscrewing these using a cheap Torx 20 screwdriver, you will then be able to slide out your radio.

Removing a touchscreen radio
Image 2

In most cases you won't need to disconnect any wires from the back - simply take pictures of all the labels on the radio and insert it back into the dash.

If you'd prefer to see this process visually, see this video.

Identifying your Mercedes Citan's serial number

Your Citan's serial number or security code will always with end with one letter followed by 3 numbers. This will either be at the end of a longer serial number (image 3), or in a separate box labelled Security (image 4).

Label of a Renault Anatel radio
Image 3
Label of a Renault Philips radio
Image 4

If you're still having trouble identifying the security code to enter into our decoder, simply contact us with a picture of your radio's sticker label and we'll help you identify it at no extra cost. Once you have your security code, all that’s left is to decode it using our Mercedes Citan radio decoder and generator at the top of this page.


Always double-check that the serial number you enter matches the serial number on your radio's display or sticker label, as we are usually unable to offer refunds for radio codes decoded from incorrect serial numbers.

Who we are

RapidRadioCodes™ is a small independent business based out of Sheffield, Yorkshire, in the North of the UK. Our mission is to be able to instantly generate radio unlock codes for all cars, vans and trucks, at a single fixed price that's cheaper than both the dealerships and other third-party decoding sites. Since first being established less than a year ago, we've already helped over 5,000 drivers, garages and car dealerships unlock their radios, and received hundreds of 5-star reviews across our TrustPilot and Reviews.io pages. Still have questions? See if we've already answered them in our main FAQ section.