Mercedes Benz Key

Can I Get a Key Coded for My Mercedes-Benz?

Short answer: Yes — but here’s the important detail: Cardoc Diagnostics codes FBS3 keys only. If your Mercedes uses the FBS3 system, we can cut and program a working key or spare. If your vehicle uses a newer FBS4 or FBS5 system, we’ll guide you to the correct next step.

What is FBS3?

FBS stands for Fahrberechtigungssystem — German for “drive authorization system.” It’s Mercedes’ immobiliser/key security technology.

  • FBS2: mid-1990s – early 2000s

  • FBS3: around 2004 – 2015 (our specialty)

  • FBS4: from 2015 onward

  • FBS5: newest generation in current models

That means most Mercedes built between 2004 and 2015 run on FBS3, making them eligible for our coding service. Some models held onto FBS3 longer (e.g. Sprinter vans), while high-end models switched to FBS4 earlier. The best way to be sure is to send us your VIN.

Spare key pricing (FBS3 only)

  • Spare key coding starts at R2380.

  • Exact price depends on key type (flip key / fob / basic transponder) and whether you already have a working key.

  • If no working keys exist, extra steps may be required and the price will increase.

Send your VIN, model, year, and whether you have a working key for a firm quote.

How to confirm if your Mercedes is FBS3

  • Send us your VIN → fastest and most accurate check.

  • Provide your model & year → we can usually tell if it falls into the FBS3 range.

  • Show us your key/fob → some part numbers clearly indicate the key generation.

If your car is FBS3, we can code it. If it’s FBS4 or newer, we’ll explain your options (usually dealer-level programming).

What we can do for FBS3 keys

If your Mercedes qualifies:

  1. Verify ownership 

  2. Cut the physical key blade (if needed).

  3. Fit the correct transponder/fob.

  4. Program/code the key to your immobiliser and central locking.

  5. Test all functions (lock, unlock, start).

If your Mercedes isn’t FBS3

  • Dealer programming: often required for FBS4/FBS5.

What to bring

  • Your ID

  • Vehicle registration/logbook

  • Any existing or damaged keys

  • The car itself (if required for programming)

  • Ensure the battery is charged

Quick FAQ

Q: What years are FBS3 keys?
A: Roughly 2003–2015. Send your VIN for exact confirmation.

Q: Do you code FBS4 or FBS5 keys?
A: No. We only code FBS3 keys. For newer systems, we’ll direct you to the correct solution.

Q: How much does a spare key cost?
A: Spare key coding starts at R2380. Exact quote depends on key type and whether a working key exists.

Q: Can I buy a key online and bring it?
A: Many online keys are wrong or non-programmable. Always check compatibility with your VIN before buying.

Bottom line

If your Mercedes was built between 2003 and 2015, there’s a strong chance it’s FBS3 — and we can code a key for it starting at R2380. Outside those years, your vehicle probably uses FBS4 or newer, and we’ll guide you to the right specialist.

📞 072 704 4258