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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.

Currently unavailable
Please contact your local Audi dealership for assistance.
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Excellent 4.5 stars 22,253 reviews on Trustpilot
Trustpilot 4.5 out of 5 stars on Trustpilot TrustScore  4.5 | 22,253 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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Cannot believe I have finally got the…

Cannot believe I have finally got the code for my stereo.I’ve had the car 2 years and the radio has never worked because of the code.Anyway spoke to someone …

Lorraine Dyer · GB
5 stars
5 hours ago Trustpilot

Sehr schnell einen Code erhalten

Sehr schnell einen Code erhaltenleider aber zunächst einen 4-stelligen - aber typenbedingt (Erstausstattervariante Kfz-Marke) erforderte das Gerät einen 5-st…

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I was very pleased with the service would highly recommend

Karen Goozee · GB
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20 hours ago Trustpilot

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Dan Taylor · GB
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1 day ago Trustpilot

Excelente

Excelente, el código es el correcto! Son una empresa muy seria y confiable!Muchas gracias!

Roberto San · AR
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1 day ago Trustpilot

Very helpful had code in no time would…

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Desmond Hall · GB
5 stars
1 day ago Trustpilot

servizio rapido ed efficace

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Massimo De Nardis · IT
5 stars
1 day ago Trustpilot

It took a day longer but it works!

It took a day longer, but I actually received the code in my email and it works. So I'm very happy, thank you.

RAPA Projekty · CZ
4 stars
1 day ago Trustpilot

Had to email and chase up for code

Had to email and chase up for code, but once received code it was correct and got my radio unlocked! So Thankyou so much for that!!(:

Steph · NZ
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Nice and easy service and got my code…

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1 day ago Trustpilot

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EMMA collins · GB
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