Audi · Radio Codes

Est. 24 Hours

Audi A4 Radio Codes

Name: Audi A4 Radio Codes
Brand: Audi
Price: 29.99 GBP
Availability: InStock
Rating: 4.5 (21905 reviews)

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.

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Please contact your local Audi dealership for assistance.

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21,905 reviews on

TrustScore 4.5 | 21,905 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.

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).

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).

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.

Why choose us

The World's Leading Audi Radio Code Service

World's No.1

OnlineRadioCodes.co.uk is the world's leading supplier of car radio codes, with over 1 million codes delivered. Our radio experts are on hand to help you every day.

Instant delivery

Most codes appear on screen the moment payment clears. For brands that require manual lookup, our team typically delivers within the hour during business hours.

Money back guarantee

If your code does not work, we refund you in full. No questions, no hassle. We are one of very few radio code companies to back every order with a complete money back guarantee.

Lifetime retrieval

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.

Verified · Trustpilot

Don't just take our word for it

9 hours ago

Top marks

It was great. I called up gave my car information five minutes later my radio was back up and running thank you

Keith Roberts · GB

10 hours ago

Simple But Slow

The online form was quick and simple and the correct code was supplied.. only annoyance was the time I had to wait but overall great service.

Richard Hepburn · GB

10 hours ago

I waited too long for the code

I waited too long for the code. Everything else is fine.

Vladimirs Pastors · IE

10 hours ago

After contacting a few local…

After contacting a few local dealerships and being given inaccurate information, I contacted these guys! I had my code by the end of the day and my radio is …

Peter · GB

10 hours ago

Very fast and easy efficient service

Marie French · GB

1 day ago

So easy

So easy, worked immediately!

Stephen Warrilow · US

2 days ago

Authentication radio code

Excellent, easy & prompt.

Jenny Lariviere · GB

2 days ago

Fast and efficient service

Fast and efficient service. Got my radio working again. Thank you

Nikki Hellens · GB

3 days ago

Service was very good

David Hughes · GB

3 days ago

Very fast and great service

Michael T Barron · CA

3 days ago

Amazing! Fast and easy!

I received the code in 20 minutes and now I have the radio working just fine.I will definitely recommend the service!

Beatriz Crespo · PT

4 days ago

Every think is good

Every think is good. Counication on email is excelent. Thank you

Tomáš Janíček · CZ

See our 21,905 reviews on

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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Audi A4 Radio Codes

How to find your Audi serial number

The World's Leading Audi Radio Code Service

Don't just take our word for it

Top marks

Simple But Slow

I waited too long for the code

After contacting a few local…

Very fast and easy efficient service

So easy

Authentication radio code

Fast and efficient service

Service was very good

Very fast and great service

Amazing! Fast and easy!

Every think is good

Ready to unlock your Audi radio?