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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 22,206 reviews on Trustpilot
Trustpilot 4.5 out of 5 stars on Trustpilot TrustScore  4.5 | 22,206 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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Misplace your code weeks or even years from now? Just get in touch and we will resend it free of charge, every time. One purchase gives you access for life.

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.

Verified · Trustpilot

Don't just take our word for it

See all reviews on Trustpilot
5 stars
5 hours ago Trustpilot

Mega gut

Mega gut, innerhalb 3-4 Stunden kam mein Code an, hatte von eBay Kleinanzeigen ein VW Radio gekauft, mit Code, wusste das ich den beim Händler kriegen kann, …

Maestro · DE · VW
5 stars
6 hours ago Trustpilot

Code works fine.

I had to wait about five hours, feeling a bit doubtful, but the wait was worth it. The code works, and my Audi A4 has regained its original sound. Thanks fro…

Alberto · ES · Audi
5 stars
8 hours ago Trustpilot

Simple process.

Helpful guides on how to find the radio serial number.Simple process, got my radio code within the hour.

Value Cars · GB
5 stars
9 hours ago Trustpilot

Todo el servicio muy bien

Todo el servicio muy bien, mandaron el codigo a la brevedad y mi radio quedo funcionando correctamente

Jonathan Pastrana Alegre · MX
5 stars
12 hours ago Trustpilot

Le code reçu instantanément après…

Le code reçu instantanément après payement, dans la seconde. Radio blaupunkt de Renault master 2, sans precide, avec numéro vin

Mykola B · FR · Renault
5 stars
12 hours ago Trustpilot

Very fast response

Very fast response after sending first code wrong ,got sorted within the hour .Great service.

customer · IE
5 stars
1 day ago Trustpilot

Efficace

Efficace, rien a dire et très réactif par mail.

ETIEMBLE JULIEN · FR
5 stars
1 day ago Trustpilot

Very quick and sorted in seconds

Very quick and sorted in seconds

barry cook · GB
5 stars
1 day ago Trustpilot

Erstaunlich unkomplizierter Zugang zu…

Erstaunlich unkomplizierter Zugang zu den Codes. Hatte leider keinen Code für meinen Dacia Duster vom Händler erhalten. Nachdem ich die Batterie ersetzen mus…

Udo Schwendt · DE · Dacia
5 stars
1 day ago Trustpilot

Very good experience and radio code…

Very good experience and radio code arrived quckly

Pavlina · GB
5 stars
2 days ago Trustpilot

Excelente y rápida atención

Excelente y rápida atención. Muy conforme

Lala García · AR
See our 22,206 reviews on Trustpilot

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