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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
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Excellent 4.5 stars 22,106 reviews on Trustpilot
Trustpilot 4.5 out of 5 stars on Trustpilot TrustScore  4.5 | 22,106 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
3 hours ago Trustpilot

Perfekt

Hat ca. 6 Stunden gedauert, aber das Warten hat sich gelohnt!!!Die Option per SMS kann ich wärmstens empfehlen!Sogar für mein Alter VW Gamma 5 radio wurde de…

Marcolo · DE · VW
5 stars
5 hours ago Trustpilot

WORKED PERFECT!

This worked! 20 bucks well worth it! I am Shen RC on youtube with the blue VW bug I took my battery out and my radio went into safe mode I could not find the…

SHEN RC YOUTUBE BLUE VW BUG · US · VW
5 stars
7 hours ago Trustpilot

excelente servicio ,me llego casi…

excelente servicio ,me llego casi inmediatamente el codigo, lo puse y la radio anduvo perfecto !! recomiendo

Carlos Bivachi · AR
5 stars
1 day ago Trustpilot

Instant results, worked v well

Needed a code for my Boxster after battery change- quick, efficient and accurate results

jean oosthuizen · CA
5 stars
1 day ago Trustpilot

The first code I was given didn’t work

The first code I was given didn’t work. I replied to the mail and they answered really quickly with a new code that worked. Couldn’t be happier!!

Johan Steenkamp · ZA
4 stars
1 day ago Trustpilot

Very quick service and professional…

Very quick service and professional after care service on the phone sadly a wasted £9:99 as the radio has an internal fault would only let me input zeros

Steve Davis · GB
5 stars
1 day ago Trustpilot

Excellent service quickly delivered

Excellent service quickly delivered, thanks.

Mick · GB
5 stars
1 day ago Trustpilot

Brilliant

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Sheila Crowsley · JE
5 stars
1 day ago Trustpilot

Radio Code given in a matter of hours

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Dusana Merven · GB · Nissan
5 stars
1 day ago Trustpilot

Excellent service

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Kayleigh · GB
5 stars
1 day ago Trustpilot

snel en echt de goeie radio code ik…

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Jeroen · NL
5 stars
1 day ago Trustpilot

Absolut Super

Absolut Super, vielen Dank für die schnelle Code Ermittlung. Das Radio funktioniert jetzt, dafür ist der Preis mehr als gerechtfertigt Der Code der beim Radi…

Martin Hofmann · DE
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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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