Smart Fortwo Key Replacement Guide
Last updated: September 2026 · Verified against OEM part numbers
Quick answer — Smart Fortwo
The Smart Fortwo (2008-2017) uses the KR55WK45144 remote head key — 315 MHz — verified against the original OEM part number. See every compatible option in the table below.
- OEM part number: KR55WK45144
- Frequency: 315 MHz
- Key type: Remote Head Key
- Years covered: 2008-2017
- Wholesale: MOQ 5 units per SKU, models mixable in one order
Which Smart Fortwo key fits your vehicle?
💬 Ask on WhatsAppCompatible keys for Smart Fortwo
| Years | Photo | Key |
|---|---|---|
| 2008-2017 | | KR55WK45144 315MHz 46 Chip 3 Button Remote Head Key for Smart Fortwo |
| 2008-2017 | — | EZRF 433MHz 46 Chip 3+Panic Button Remote Head Key for Smart Fortwo |
| 2008-2017 | | EZRF A4518203497 433MHz 46 Chip 3 Button Remote Head Key for Smart Fortwo |
| 2008-2017 | | KR55WK45144 315MHz 46 Chip 3+1 Button Remote Head Key for Smart Fortwo |
Before you order
- Match the year range — Smart changed key systems across model years. Check your registration year.
- Check your current key — the OEM number printed on your key matches the table above.
- Programming — smart keys need a compatible programmer (Xhorse, VVDI, Autel). We can advise which one works for each key.
Frequently asked questions
What frequency is the Smart Fortwo key?
The Smart Fortwo key operates on 315 MHz. Frequency is fixed in the key hardware and cannot be reprogrammed — a key bought on the wrong frequency will not lock, unlock or start the car.
Which key fits my Smart Fortwo?
The Smart Fortwo (2008-2017) uses the KR55WK45144 315MHz 46 Chip 3 Button Remote Head Key for Smart Fortwo. Check the table above for all compatible options, verified against OEM part numbers.
Do you supply Smart Fortwo keys wholesale?
Yes. We supply locksmiths and key distributors at wholesale prices with MOQ from 5 units. Message us on WhatsApp for today's price list.
Can a Smart Fortwo key be programmed without the dealer?
In most cases yes, using tools like Xhorse, VVDI or Autel. We can advise the right programmer for each key SKU.
Ready to order a Smart Fortwo key?
💬 Ask on WhatsAppRelated: All Smart keys · All guides · Key Finder
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