Audi A4 / S4 / RS4 2005 Unlock Code⚡

B6 | Instant Retrieval | 24/7 Service

Audi A4 / S4 / RS4 2005 car photo
Dealer price $120 92% Off!
Our price: only $9.99
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100% Money-back guarantee if the code doesn't work

Your code becomes available immediately after processing your purchase and is emailed to your email additionally. We're available round the clock.

Code fails? You're protected by our Complete Satisfaction Guarantee. Just send us a video that shows both the code entry and serial number together. No questions asked.

View our complete Refund Policy.

Once you have your code:
1. Turn on your Audi A4 / S4 / RS4 2005
2. Your radio will display "Enter Code" or "CODE"
3. Use preset buttons to enter each digit
4. Press and hold button 6 to confirm
5. Your radio unlocks immediately!
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How to get your Audi A4 / S4 / RS4 2005 radio code?

1. Find the serial number on your radio. Hold down preset buttons 1 & 6 for a few seconds. Serial number will appear on screen. VIN not needed!

2. Enter your serial number in the field on the left

3. Proceed to checkout to instantly receive your unlock code

Compatible Radio Types:

  • Audi OEM
  • Blaupunkt
  • Siemens

Serial Number Patterns:

Your radio serial may start with: AUZ, BP

Serial Number Examples:

AUZBZ7A1234567 (AUZ)

About 2005 Audi A4 / S4 / RS4 (B6)

Your 2005 Audi A4 / S4 / RS4 (B6) came equipped with OEM radio units that need unlock codes when battery is replaced. Our service provides fast radio code retrieval for all 2005 Audi A4 / S4 / RS4 trim levels.

Common Reasons for Radio Lock:

  • Battery change or removal
  • Electrical maintenance in your 2005 A4 / S4 / RS4
  • Radio replacement
  • Fuse replacement
  • Boosting after dead battery
  • Purchased second-hand vehicle without code card

Why Our Service is Better:

⚡ Instant vs Days of Waiting
Dealer: 2-5 business days
Our service: Seconds

💰 $9.99 vs $120+ Dealer Price
Dealer: $120-$200
Our service: $9.99

No VIN required - just your radio serial number! Works for all 2005 Audi A4 / S4 / RS4 trim levels and radio variants.