Lost your Mercedes-Benz key or smart fob? We supply and program Mercedes keys on site in Fort Worth — including older EZS/EIS chrome arrow systems and modern FBS4 smart keys — same day, no dealer tow.
Mercedes vehicles use the EZS/EIS (Electronic Ignition Switch / Electronic Steering Lock) module on most older models and the FBS4 system on the latest generation. Programming a new Mercedes smart key requires reading the EZS, calculating the right transponder data, and pairing the new fob — specialized work most general locksmiths don't do. Our team has the dedicated Mercedes equipment to handle it on site.
Mercedes dealership key replacement for a modern model can mean a tow, parts ordered through Germany on some platforms, and a multi-day or multi-week wait. A mobile auto locksmith with proper EZS/EIS or FBS4 equipment comes to your vehicle in Fort Worth, programs the new smart key on site, and verifies all functions before leaving.
Two things decide a Mercedes job before a technician ever opens a case. The first is which security generation the car uses — an FBS4 car is a different conversation from an FBS3 one, and which cars genuinely need the dealer sets out where the line falls and why it is a licensing boundary rather than an equipment one. The second is that the badge on the trunk does not always tell you whose immobilizer is underneath: a Sprinter van and an Infiniti QX30 are Mercedes platforms and inherit Mercedes key rules, which is the sort of thing that changes a quote after the fact if nobody checks. Badge versus platform lists the pairs that matter and, just as usefully, three that people assume share and do not.
Yes — if the locksmith has the dedicated Mercedes EZS/EIS and FBS4 equipment. We do, and we program new Mercedes-Benz smart keys on site for most model years.
Mercedes smart key replacement typically ranges from around $300 to $700+ depending on model year, system, and whether all keys are lost. We share the relevant range upfront before any work begins.
Because all-keys-lost Mercedes programming is more involved (and more expensive) than simply pairing a spare to an existing system. Having a backup smart key on hand can save significant time and money.
Yes. In all-keys-lost work, we typically clear previously paired keys from the EZS / EIS / FBS4 so a lost or stolen Mercedes key can no longer start the vehicle.
Call now for fast mobile service for car lockouts, lost keys, car key replacement, key fob programming, and ignition help.
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