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Audi Audi · Radio Codes
Est. 3–6 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 4.6 stars 22,862 reviews on Trustpilot
Trustpilot 4.6 out of 5 stars on Trustpilot TrustScore  4.6 | 22,862 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 and you do not need to disconnect any wires.

The serial is on the label on the back of the casing. It starts with AUZ and is 14 characters long (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. It starts with AUZ and is 14 characters long (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 along the bottom edge of the display, where the serial number appears.

It starts with AUZ, is 14 characters long, and the sixth character is always 7 (for example AUZBZ7H7145296).

Not every RNS-E shows its serial. If yours is missing, cut short or replaced by question marks, slide the unit out with radio release keys and read the AUZ serial from the label on the casing.
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.
My Audi screen says component protection is active. Will a radio code clear it?
No. Component protection is a different lock from the radio code. Newer Audi systems use it, MMI included. It is tied to the car's own systems, so no radio code clears it. A radio code is for a radio that shows SAFE or asks for a four digit code. If that is what yours does, enter its serial above and we will retrieve your code.

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5 stars
2 hours ago Trustpilot

Super zufrieden! Wenn man alle Daten korrekt eingibt und den Anweisungen folgt, ist der Radiocode innerhalb weniger Sekunden da. Die Eingabe hat problemlos …

Sandra MÜLLER · DE
5 stars
5 hours ago Trustpilot

This company made a difficult job much…

This company made a difficult job much easier and much less expensive. Did exactly what they promise. In today's market, this is not always true.

customer · US
5 stars
10 hours ago Trustpilot

Very impressed good price fast service…

Very impressed good price fast service even though there was further information had to be found other than the radio serial number I definitely use them again

Stuart Mccutcheon · GB
5 stars
10 hours ago Trustpilot

Don't use any other sites besides this one !!

I went to another company first for the radio code and wasted my money.. after three days, they still could not provide me with the correct code.. i came he…

Ian Leftwich · US
5 stars
11 hours ago Trustpilot

DISPONIBILI RISPOSTA IMMEDIATA CODICE…

DISPONIBILI RISPOSTA IMMEDIATA CODICE INVIATO CORRETTO

Luigi Ravazzani · IT
5 stars
12 hours ago Trustpilot

Great service and if you make a mistake…

Great service and if you make a mistake they communicate back and help you so they have the correct information thank you so much

Frank Campos · US
5 stars
1 day ago Trustpilot

Cool and efficace, très professionnel

Le suivi était parfait et le travail a été fait.Les contacts ont été rapide et efficace.

Pascale Robert · FR
4 stars
1 day ago Trustpilot

Al final bien

En un primer momento todo fue fatal. Hice el pago y me salia que en una hora me darian el codigo. Pasado este tiempo no obtuve respuesta. Deje pasar hasta la…

Chris Belmonte · ES
5 stars
1 day ago Trustpilot

Brilliant service

Simple service, easy to use. Uploaded the radio barcode No, paid the small fee and in less than a minute I had the code and the radio was unlocked.

Colin P · GB
5 stars
2 days ago Trustpilot

Hung

15 minutes after payment the code came on e-mail .I ordered the service from hungary , the code worked on vw golf 2006 gt .Thanks for the service .

Gerő Molnár · HU · VW
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