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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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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
5 hours ago Trustpilot

Lost my radio code due to a recent…

Lost my radio code due to a recent battery change. Requested my radio code and received it the very next day and it worked. All back up and running. Fantast…

Andrea Marsden · GB
4 stars
5 hours ago Trustpilot

A fairly easy website to use.

A fairly easy website to use.I’m well over 80 and got my code from you and installed my car radio in minutes.

Shelagh · GB
5 stars
6 hours ago Trustpilot

Quick and simple way to get the correct…

Quick and simple way to get the correct code which worked first time. Did try a cheaper website but they could not find the code so best to go straight to th…

Gareth Dyer · GB
5 stars
8 hours ago Trustpilot

Everything was quick and accurate

Everything was quick and accurate. I will use them again if needed. Highly recommend ....

Rev Rob · US
5 stars
9 hours ago Trustpilot

Code reçu rapidement

Code reçu rapidement ! Tout est parfait !

Christophe · FR
5 stars
10 hours ago Trustpilot

Straight forward easy service

Straight forward easy service , Very happy.Code worked , so Happy Happy Happy

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Paid for service at 9 o clock on a…

Paid for service at 9 o clock on a Monday night had my code within 20 minutes

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11 hours ago Trustpilot

Got my code within 24 hours and it…

Got my code within 24 hours and it worked

kim lake · AU
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1 day ago Trustpilot

Might take a couple of days but great service!

First code didn’t work and had me worried, but as soon as I sent an email they replied asking for more information. A day and a half later they sent me a new…

dd bb · IL
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1 day ago Trustpilot

They gave me the code in 3 1/2 hours…

They gave me the code in 3 1/2 hours which isnt too bad considering it was a sunday. The code worked!

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1 day ago Trustpilot

Very quick and easy service and a great…

Very quick and easy service and a great price

Alan Bull · GB
5 stars
1 day ago Trustpilot

Hi there thankyou so much from my deep…

Hi there thankyou so much from my deep heart as i put in radio code radio start working .thankyou so much very good and honest service i will say to public i…

MR YASER SHAFIQ · GB
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