Mercedes-Benz E-Class Key Replacement in San Diego

An E-Class SmartKey for a 2003 to 2013 car is $329 at your curb, against roughly $620 at a Mercedes dealer. From 2014 on, we say at the start that Mercedes normally supplies the key.

The E-Class key story has a clean break. The 2003 to 2009 car and the 2010 to 2013 car both use the FBS3 SmartKey, programmed where you park. The 2014 refresh of that second body switched to FBS4, a key Mercedes codes to one VIN.

That break falls mid-generation, which is what confuses owners. A 2013 and a 2014 E350 share the same body, but normally only the older one takes an FBS3 key programmed at the car; the refreshed car wears one-piece headlights instead of the earlier four-lens look, and the VIN confirms which one you own. For the 2014 and newer car, the useful advice is the dealer, given on the phone with a list of what to bring. The rest of the lineup sits under Mercedes-Benz keys.

Mercedes-Benz E-Class keys by model year

Find your year, and the row shows the key it takes, what the dealer charges and what we charge at the car.

Prices as of 2026-09-30. Every price includes the drive to you anywhere in San Diego County. There is no trip fee and no after-hours rate inside our open hours. All keys lost adds $60.
Model years	Typical dealer	Value Car Keys	You keep
2003 to 2009: European smart or remote key (Sedan, wagon from 2004 and the AMG versions)The W211 SmartKey: the entire fob goes into the dash ignition and turns, with a thin door blade that slides out of the back. The key data is kept in the electronic ignition switch.	~~$620~~	$329	$291
2010 to 2013: European smart or remote key (Sedan, wagon from 2011, coupe and convertible)The W212 SmartKey, the last E-Class key on FBS3. The 2014 refresh moved to FBS4, so from that year the key is usually a factory part tied to your VIN, sold by the dealer; that news comes during your call rather than after a trip.	~~$620~~	$329	$291

The new key next to the original.

Lost every E-Class key?

Every key lost on a 2003 to 2013 E-Class still ends with the car running where it sits. The electronic ignition switch is usually removed from the dash, its key data gets read on the bench, and a new SmartKey is programmed before the switch returns, leaving the missing keys useless.

That brings the price to $389, which is $329 plus the $60 no-key charge. We also need to see a driver's license whose name matches the registration or title.

For a 2014 or newer E-Class with nothing left, you hear first that the key is a Mercedes part made for your VIN and ordered by a dealer. Bring ownership papers and ID to the counter once, and ask there how long the factory key will take. Hearing that from us before you book anything beats hearing it after.

Mercedes-Benz E-Class key questions

Why is a 2013 E350 key done at the car while a 2014 goes to the dealer?

The 2014 refresh changed the immobilizer, not only the headlights. The 2013 car uses FBS3, which accepts a key we program in your driveway for $329. The 2014 car uses FBS4, where each key is made at the Mercedes factory for a single car, so the dealer is the practical source and you hear that before anyone books a visit.

Do the E-Class wagon, coupe and convertible take the sedan's key?

Yes, year for year. A 2004 to 2009 wagon, and a 2010 to 2013 wagon, coupe or convertible, take the same FBS3 SmartKey as the sedan, at $329. The two-door cars stayed on sale for several years after the 2014 refresh on the newer system, so a 2014 or later coupe or convertible gets the same dealer advice as the sedan.

My 2012 E350 key goes in but the ignition will not budge. What is likely wrong?

Often the electric steering lock, not the key. The 2010 to 2013 E-Class is reported to share the steering lock failures seen on the C-Class of those years, and a new key does nothing for that fault. Describe what the dash shows and what happens when you turn the key, and you hear which part is the likely culprit before any price is given.

I have a 2016 E350 and one key left. What is the smart move?

Order a second key through a Mercedes dealer now, while the car still starts. The 2016 E-Class uses FBS4, so its key comes from Mercedes either way, but with a working key you drive to the dealer instead of booking a tow that runs $125 to $200. That is the advice you get from us on the phone, too.

Other Mercedes-Benz models

Text us your Mercedes-Benz E-Class year and trim

Call or text (619) 340-1518 with the car's year, make and model. If a dealer already quoted you, send that quote over for our answer on the same key.

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