- (214) 717-6398
- info@dfwkeys4cars.com
- Mon - Fri: 9:00 - 18:30
Smart Key Replacement
DFW Keys 4 Cars – Mobile Smart ForTwo Locksmith
Smart ForTwo keys are an odd corner of the market: dealer support is thin since the brand left the US, and the little three-button remote key (FCC KR55WK45144 on 2008–2015 cars) must be programmed with Mercedes-family equipment. We cut and program Smart keys at your location across DFW. Call (214) 717-6398.
One Important Quirk: Bring Every Key You Own
Smart 451 key programming is a “total write”: the car’s key list is rewritten in one operation, and any key not present during programming stops working. When we schedule your ForTwo, have every working key with the car so they all get re-registered together — it’s the difference between one visit and two.
🔧 Smart Key Types, Model Years & Security
Find your model below, then call (214) 717-6398 and we’ll confirm by VIN before we roll out.
| Model | Years | Key Type | Security System | Notes |
|---|---|---|---|---|
| ForTwo (451) | 2008–2015 | Remote-head/flip key (3+1 btn) | PCF7941 (ID46 family) | FCC KR55WK45144, 315 MHz, VA2 blade |
| ForTwo (453) | 2016–2019 | Remote key | Confirm by VIN | Locksmith programming available |
| ForTwo Electric Drive | 2013–2019 | Per generation above | Confirm by VIN |
The 451 ForTwo Key, Properly Understood
The 2008–2015 ForTwo’s three-button remote key (FCC KR55WK45144, 315 MHz, PCF7941 chip, VA2 blade) is a Mercedes-family design — which means it needs Mercedes-family programming equipment, not the generic OBD dongle a general handyman might try. Our units carry the right tooling, and we cut the VA2 blade to code on-site.
“Total Write”: Why You Must Bring Every Key
Smart’s programming model rewrites the car’s entire key list in one operation. Any key not physically present when we program is dropped from the car — permanently, until it’s re-added in another full write. So when we schedule your ForTwo: gather every working key, valet key, and the one in your ex’s drawer if you can get it. One visit, all keys registered, no surprises. This single quirk causes more Smart-owner frustration than anything else about the car.
453 Cars and the Electric Drive
The 2016–2019 ForTwo (453 generation) moved to a newer remote system that locksmith equipment increasingly supports — we confirm capability by VIN before dispatch, and we’re straight with you if a particular year still needs dealer tooling. Electric Drive cars follow their generation’s key system; the battery being big doesn’t change the key.
Smart Key FAQ
I lost one of my two Smart keys. Do I really need to bring the other?
Yes — absolutely. Because programming is a total write, the surviving key must be present or it stops working too. Bring every key you own.
My fob buttons died but the car starts. Fix or replace?
Often it’s the battery or worn contacts; we test first. If the fob is done, we supply and program a replacement — with your other keys present, per the rule above.
Can you cut just the emergency blade?
Yes, the VA2 blade cuts to code in minutes at your location. Call (214) 717-6398.
📍 Smart Key Service Across DFW
Fully mobile — Dallas, Plano, Frisco, Fort Worth, Arlington, Irving, McKinney and the rest of the metroplex. See all service areas.