- (214) 717-6398
- info@dfwkeys4cars.com
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Audi A8 / S8 Key Replacement
Audi A8 / S8 keys date back to 1997 and span 2 key systems across the model’s generations — transponder; smart key. DFW Keys 4 Cars cuts and programs every one of them at your location anywhere in Dallas–Fort Worth, 24/7 — spares, all-keys-lost, fobs and lockouts. Call (214) 717-6398.
About A8 / S8 Keys
Verified key reference for the Audi A8 / S8 — model years, key types, and the transponder/immobilizer each generation uses. Boundary years can overlap; we confirm the exact part by VIN before dispatching.
| Model / Generation | Years | Key Type | Transponder / Immobilizer | Blade / FCC |
|---|---|---|---|---|
| A8 · S8 | 1997–2003 | Transponder | Megamos Crypto ID48 | HU66 |
| A8 · S8 (D3) | 2004–2009 | Smart key | Philips ID46 (Hitag2 / PCF7946) | HU66 |
| A8 · S8 (D4) | 2010–2017 | Smart key | Hitag-Extended VAG (PCF7945AC) | HU66 |
Security System & Immobilizer
Audi spans Megamos ID48, the 8E era, Hitag-extended precoded keys, and Megamos AES on MLB/MQB platforms.
On the A8 / S8 specifically we see: Megamos Crypto ID48, Philips ID46 (Hitag2 / PCF7946), Hitag-Extended VAG (PCF7945AC). A correctly cut but unprogrammed key turns the locks and never starts the engine — programming is the half of the job that matters.
Which key does your year have?
- 1997–2003: Transponder — Megamos Crypto ID48 (HU66)
- 2004–2009: Smart key — Philips ID46 (Hitag2 / PCF7946) (HU66)
- 2010–2017: Smart key — Hitag-Extended VAG (PCF7945AC) (HU66)
Our A8 / S8 Key Services
- Key replacement — lost, stolen or broken keys cut from code and programmed on-site, including all-keys-lost by VIN
- Spare key duplication — cheap insurance done in one short visit
- Fob & transponder programming — remotes and smart keys paired to the immobilizer
- Lockout service — damage-free entry, 24/7
- Ignition repair — worn cylinders and keys that won’t turn
Audi A8 / S8 Key FAQ
I lost the only key to my A8 / S8. What now?
We come to the vehicle, verify ownership, cut a new key from the VIN, and program it on-site — no tow, no dealer wait.
My A8 / S8 is push-to-start — can you program that outside the dealer?
Yes. Late models (2010–2017) use a proximity smart key on Hitag-Extended VAG (PCF7945AC) — we carry the fobs and the programmer, and we cut the emergency blade.
Do you still stock keys for older A8 / S8s?
Yes — back to the 1997–2003 generation (transponder), and a fresh code-cut key beats any copy of a worn original.
How fast can you reach my A8 / S8 in DFW?
We dispatch the nearest mobile unit metroplex-wide, 24/7 — call (214) 717-6398 for an honest ETA.