Free Audi A4 Radio Code

Which radio is in your A4?

Radio names are what is written on the fascia, not the name of the company that built the unit — a “6000 CD” or an “RCD 300” is what you see in the car. Unit fitment varies by market and trim, so treat the list as the usual case and let the serial decide: it is the serial that determines the code, not the model.

About “in our database”. For these units the code is not calculated from the serial — there is no formula, the code lives in the radio's own memory. Every service that answers by serial, ours included, is reading a collected database. Most serials are in ours; when yours is not, we say so on the spot rather than guess at four digits — and there is nothing to pay for a code we do not have.

Audi A4 radio code by year

From 1994 to 2015 the A4 came in 3 generations, and the factory radio — and with it the serial you need — changed along the way. Find your year below.

Audi A4 B5 radio code (1994–2001)

If your A4 is from 1994–2001, it is the B5. The radio fitted was usually one of: Chorus, Concert, Symphony. The serial reads AUZ…; label on the top or side of the unit — pull it out with U-shaped release keys. We look that serial up in our database; most are there, and if yours is not, the page says so before you leave any details — there is nothing to pay for a code we do not have.

Audi A4 B6-B7 radio code (2000–2008)

If your A4 is from 2000–2008, it is the B6-B7. The radio fitted was usually one of: Concert, Symphony, Chorus, RNS-E. The serial reads AUZ…; label on the top or side of the unit. We look that serial up in our database; most are there, and if yours is not, the page says so before you leave any details — there is nothing to pay for a code we do not have.

Audi A4 B8 radio code (2008–2015)

If your A4 is from 2008–2015, it is the B8. The radio fitted was usually one of: Concert, Symphony (single unit) or MMI 3G. The serial reads AUZ…; single-DIN Concert/Symphony carry the AUZ label; MMI systems have no code and are coded to the car. We look that serial up in our database; most are there, and if yours is not, the page says so before you leave any details — there is nothing to pay for a code we do not have.

How to enter the code in your A4

1. Switch on the ignition and the radio. Most units show SAFE, then 1000 by themselves after a few seconds.
2. Older units that stay on SAFE (Gamma and Beta with separate TP and TA keys, Audi Concert, Chorus, Symphony): hold the pair of keys printed for it — TP + TA, FM1 + AM, AS + RDS — until 1000 appears, then let go and don’t press the pair again yet.
3. Presets 1–4 each set one digit: press button 1 until the first digit is right, then 2, 3 and 4.
4. To confirm: older units with the key pair — hold the same pair until SAFE shows again; red-lit Gamma / Beta (Golf IV era) — hold the cassette key or the seek key for more than 2 seconds; RCD 210 / 310 — the button under OK on the display; RCD 300 — the button beside ENTER; Seat Aura — hold PTY until it beeps; Seat Alana — hold SCAN until it beeps; Škoda Swing — press key 6; Škoda Blues — hold key 6.
5. Touchscreens (RCD 510, RNS 315 / 510, Bolero): type the code on the keypad and tap the confirm field.
6. You get two tries, then the unit locks for about an hour: keep the ignition and the radio on for the whole hour.
7. SAFE in the car the radio came from, after a battery change, means it has lost its link to the instrument cluster — tell us before entering anything.

Careful: most units lock for good after about ten wrong attempts. If a code does not take, stop and email us before trying again.

Other Audi models

Audi A4 radio code: questions

Where is the serial number on an Audi A4 radio?

B5 (1994–2001): AUZ…, label on the top or side of the unit — pull it out with U-shaped release keys. B6-B7 (2000–2008): AUZ…, label on the top or side of the unit. B8 (2008–2015): AUZ…, single-DIN Concert/Symphony carry the AUZ label; MMI systems have no code and are coded to the car.

Is the Audi A4 radio code free?

Yes, if your serial is in our database — the page tells you before you leave any details, and a code we do not have costs nothing.

How do I enter the radio code in an Audi A4?

Switch on the ignition and the radio. Most units show SAFE, then 1000 by themselves after a few seconds. Older units that stay on SAFE (Gamma and Beta with separate TP and TA keys, Audi Concert, Chorus, Symphony): hold the pair of keys printed for it — TP + TA, FM1 + AM, AS + RDS — until 1000 appears, then let go and don’t press the pair again yet. Presets 1–4 each set one digit: press button 1 until the first digit is right, then 2, 3 and 4. To confirm: older units with the key pair — hold the same pair until SAFE shows again; red-lit Gamma / Beta (Golf IV era) — hold the cassette key or the seek key for more than 2 seconds; RCD 210 / 310 — the button under OK on the display; RCD 300 — the button beside ENTER; Seat Aura — hold PTY until it beeps; Seat Alana — hold SCAN until it beeps; Škoda Swing — press key 6; Škoda Blues — hold key 6. Touchscreens (RCD 510, RNS 315 / 510, Bolero): type the code on the keypad and tap the confirm field. You get two tries, then the unit locks for about an hour: keep the ignition and the radio on for the whole hour. SAFE in the car the radio came from, after a battery change, means it has lost its link to the instrument cluster — tell us before entering anything.