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Audi Audi · Radio Codes
Est. 24 Hours

Audi A4 Radio Codes

Audi A4 radio code by serial number. Covers all Concert, Chorus, Symphony, and navigation units fitted across A4 B5, B6, B7, and B8. Enter your AUZ serial from the unit label.

Enter your serial number
Over 1 million codes delivered worldwide.
Not sure which serial to enter? See examples
Est. 24 Hours Money back guarantee Secure checkout
Excellent 4.5 stars 22,092 reviews on Trustpilot
Trustpilot 4.5 out of 5 stars on Trustpilot TrustScore  4.5 | 22,092 reviews

Step 1 of 3

How to find your Audi serial number

The guide below will show you exactly where to find your Audi radio serial number.

Remove the radio to find your serial
Audi Chorus / Concert
Remove the radio to find your serial
Insert the four radio release keys into the corner holes of the fascia and apply gentle outward pressure. The unit slides forward. You do not need to disconnect any wires.

The serial is on the label on the back of the casing, starts with AUZ, 14 characters (for example, AUZ2Z3C1420538).
Remove the radio to find your serial
Audi Symphony
Remove the radio to find your serial
Insert the four release keys into the corner holes and slide the unit forward. The serial is on the label on the back of the casing, starts with AUZ, 14 characters (for example, AUZ1Z4H7755256).
Find your serial on screen
Audi RNS-E Navigation
Find your serial on screen
You do not need to remove the unit. Power it on and look at the bottom of the display, the serial number appears along the bottom edge of the screen.

It starts with AUZ, is 14 characters long, and the sixth character is always 7 (for example, AUZBZ7H7145296).
What your Audi serial looks like
AUZ-Series AUZ1Z1F6412082
AUZ-Series AUZBZ7E0902434
Can't find it? Contact us. We'll help you locate your serial before you pay a penny.

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FAQ

Frequently asked questions

Why is my Audi A4 radio asking for a code?
Power was cut to the unit, a flat battery or a battery change being the usual cause, and the anti-theft lock activated. Enter the correct code once and it will not ask again until the next time power is lost.
Which radios were fitted to the A4?
Mostly the Concert, Symphony and Chorus units, plus the RNS-E navigation on higher specs. All carry a 14-character AUZ serial and all are covered. The RNS-E can also show its serial on screen, which saves removing it.
Where is the serial on an A4 radio?
On the label on the casing, a 14-character number starting AUZ. Slide the unit out with release keys to read it, no wires need to be disconnected. RNS-E owners can use the on-screen route instead.
How do I enter the code on an A4?
With the ignition on the display shows SAFE, then 1000. Set each digit with the preset buttons, then confirm. If the radio shows 2 SAFE it has had too many wrong attempts, leave it switched on for about an hour and it will accept entries again.
I have had the car years and never needed a code before. Why now?
The code only comes into play when the radio loses power. Many owners never see it until the first battery change. Nothing has gone wrong with the unit, it just needs its code once.

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5 stars
8 hours ago Trustpilot

Literally 10 minutes start to finish to…

Literally 10 minutes start to finish to get the code highly recommended

Steve Grainger · IM
5 stars
18 hours ago Trustpilot

Aucun problème très facile à…

Aucun problème très facile à utiliser,juste trouver le numéro de série sur la carte grise.

Alain Deu · FR
5 stars
1 day ago Trustpilot

Fast and Easy Experience

I had an amazing experience using OnlineRadioCodes.co.uk....I paid the fee and received my code in seconds. I didn't want to wait to talk to the dealership t…

Kat · US
5 stars
1 day ago Trustpilot

Me funciono ya lo mandaron gracias

Me funciono ya lo mandaron gracias

Gerardo Dominguez · MX
5 stars
1 day ago Trustpilot

Muy confiable fue exactamente el código…

Muy confiable fue exactamente el código q me brindaron 10 de 10

Sergio Daniel Melian · AR
4 stars
1 day ago Trustpilot

it takes to long to get my radio code…

it takes to long to get my radio code but other then that is ok thank you

Javier Zarazua · US
5 stars
1 day ago Trustpilot

Fast and accurate delivery of the code

Fast and accurate delivery of the code, I was abit sceptical about them being able to find the code in my 18 year old car but they came through.

Geoffrey · GB
5 stars
2 days ago Trustpilot

Perfect

In a few words, just so quick and excellent service. I received the code in a matter of seconds using the vehicle VIN. So easy to use.

Colin · GB
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