Audi A4 Car Key – Smart Key, Remote & Replacement | KeyFirst

Audi A4 Car Key – Smart Key, Remote & Replacement | KeyFirst
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Audi A4 Car Keys

🔑 Audi A4 Keys – Smart Key, Remote & Secure Replacement

Lost your Audi A4 key, need a spare, or replacing a worn-out remote? KeyFirst offers a full catalog of new Audi A4 compatible keys, including:

  • ✅ Smart Keys with keyless entry/start (MQB AES)

  • ✅ 2 or 3-button remote keys

  • ✅ Replacement shells

  • ✅ HU66 blades ready to cut

  • ✅ Virgin electronic keys ready for professional OBD programming

All our keys are individually tested, fully compatible with Audi/VAG ECUs, and shipped in 24 to 48 hours.

🚗 Audi A4 – Technical Information by Generation

The Audi A4, produced since 1994, has evolved across multiple generations with increasingly advanced electronic key systems:

Generation Years Key Type Chip Blade
A4 B5 1994 – 2001 2-button remote ID13 / ID48 HU66
A4 B6/B7 2001 – 2008 3-button remote ID48 Megamos / CAN HU66
A4 B8 2008 – 2015 Smart Key (Keyless) ID88 / MQB AES HU66
A4 B9 2015 – present Smart Key (Keyless) MQB AES / ID88 HU66

💡 All Audi A4 generations use the HU66 blade, with chip technology evolving from basic transponders to encrypted MQB AES Smart Keys.

🧰 Available Products for Audi A4

  • 📡 Smart Keys for A4 B8 / B9 (MQB AES)

  • 🔑 2 or 3-button remotes for A4 B5 / B6 / B7

  • 🔄 Replacement shells (no electronics included)

  • 🗝️ HU66 blades ready to be cut

  • ⚙️ Virgin electronic keys for OBD programming

Each product listing specifies:

  • The chip type (ID13, ID48, MQB AES…)

  • Model compatibility by generation

  • HU66 blade format

  • Whether professional programming is required

🛠️ Compatible Programming Tools

Our Audi A4 keys work with leading VAG-compatible diagnostic tools:

  • Autel IM508 / IM608 Pro

  • Xhorse VVDI2 / VVDI Key Tool Plus

  • ODIS VAG (with GeKo login)

  • Lonsdor K518ISE

  • OBDSTAR X300 DP Plus

  • Zed-FULL, SmartPro, Abrites AVDI

📌 For A4 B8 and B9, secured GeKo access is required. MQB AES keys cannot be cloned.

📦 KeyFirst Commitments

  • 🚚 Express 24/48h delivery

  • 🧪 One-by-one quality control

  • ☎️ Free technical support

  • 💼 Pro pricing for garages & locksmiths

  • 🔁 Easy returns under conditions

❓ FAQ – Audi A4 Keys

🔐 What key does my Audi A4 use?

• B5: 2-button remote (ID13/ID48)
• B6/B7: 3-button remote (ID48 CAN)
• B8/B9: Smart Key with AES keyless system

🔧 Can I program an Audi A4 key myself?

❌ Not without a professional device.
✅ Requires a VAG-compatible OBD tool (e.g., Autel, Xhorse).

🗝️ What blade does it use?

All Audi A4 models use the HU66 blade.

🔁 Can I reuse a used Audi key?

No. VAG keys are locked after first use. A new virgin key is required.

🧳 Can I replace only the shell?

✅ Yes, if the internal electronics are working correctly.

🧩 Pro Tips Before Ordering

✔️ Identify your Audi A4 generation (B5, B6, B7, B8, B9)
✔️ Check if your vehicle has keyless entry/start
✔️ Note your OEM reference if possible
📞 Contact our technical team for help verifying compatibility