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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 22,137 reviews on Trustpilot
Trustpilot 4.5 out of 5 stars on Trustpilot TrustScore  4.5 | 22,137 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. If you have another Audi, our main Audi radio code page lists every model we cover.
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
2 hours ago Trustpilot

Fast and as advertised

Process was seamless and code came through in around 30 seconds and worked correctly.

Richard Gaertner · GB
5 stars
3 hours ago Trustpilot

El código funcionó perfecto

El código funcionó perfecto. Me tardo unas 12h en fin de semana, que no sé si tendrá algo que ver, pero es bastante rápido y efectivo.

Daniel Maestre Marín · ES
5 stars
4 hours ago Trustpilot

Turned a potential concern into a…

Turned a potential concern into a solution.

Bryan Vickers · US
5 stars
5 hours ago Trustpilot

Ha funcionado correctamente

Ha funcionado correctamente, el email me llegó en la carpeta “promociones” de mi cuenta de Gmail y no lo había visto pero no tardó mucho en llegar a pesar de…

Marina Juan Calvo · ES
5 stars
9 hours ago Trustpilot

Super

Code commander et reçu très vite je recommande tout et bon

Christopher Fosseux · FR
5 stars
22 hours ago Trustpilot

Thank You so much Fast and correct…

Thank You so much Fast and correct service .

Ivaylo Mutafchiev · ES
4 stars
23 hours ago Trustpilot

Very good and quick to use got code in…

Very good and quick to use got code in seconds

ian howes · GB
5 stars
1 day ago Trustpilot

Very good service and I received the…

Very good service and I received the sterio code fastI’m happy with service

Gazmend Sahiti · GB
5 stars
1 day ago Trustpilot

Very simple service

Very simple service, had correct code delivered by the next day.All workingThank you,

craig r · GB
5 stars
1 day ago Trustpilot

Radio up and working within seconds

Radio up and working within seconds. Great service.

Garrick Ward · GB
5 stars
1 day ago Trustpilot

Perfecto

Perfecto, tardo un poco en llegar el código. Pero funciona perfecto.

manuel fernandez alfaro · ES
5 stars
1 day ago Trustpilot

Estoy sorprendido con la rapidez y…

Estoy sorprendido con la rapidez y eficacia, me mandaron el código en menos de 3 horas

rigoberto hernandez · MX
See our 22,137 reviews on Trustpilot

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Online Radio Codes is an independent radio code service and is not affiliated with, authorised by, or connected to Audi AG or any of its subsidiaries or affiliated companies. All manufacturer names, model names and trademarks are the property of their respective owners and are used solely for identification and reference purposes.
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