2018 Fiat 500e Key Replacement

2018 500e key specs

The first 500e uses a flip key styled like the gas 500's, with lock, unlock and liftgate buttons, and a SIP22 blade that turns the ignition to switch on the electric drive system. The same remote also locks and unlocks the charge port door. Because far fewer 500e cars were built, replacement remotes are harder to source, and you shouldn't assume a part listed only for the gas 500 fits. Read the FCC ID printed inside your fob before ordering anything, or call with your VIN and let us confirm the correct part first.

What's specific to the 2018 500e

The 2018 Fiat 500e is the sixth of 7 model years in the 500e First generation (Mexico-built) (2013–2019), so it shares its key system with the rest of that run, which makes replacement parts easy to source.

At roughly 8 years old, a 2018 Fiat 500e has usually seen real wear. Ignition and door cylinders on high-mileage cars wear along with the key, so we cut new keys to factory code rather than copying a worn key. Fob cases crack, buttons wear through and solder joints loosen at this age, so a new shell or a replacement remote often beats repairing the old one. Many have changed hands more than once, so erasing keys you can't account for is worth doing during the visit.

Key options for the 2018 Fiat 500e

• Flip (switchblade) key. When a flip key is lost rather than broken, the replacement starts from scratch. For a Fiat 500e, we confirm the FCC ID, frequency and chip type from the VIN and any remaining key, cut the blade by code, then program both the transponder for the immobilizer and the remote buttons for the doors. Some platforms accept a new flip key through the OBD-II port in a single session; others need a security PIN or a module read before they'll take a new key. Aftermarket flip keys vary a lot in quality, especially the hinge mechanism, so we'll tell you which options we trust for your 2018 500e and which we don't.

How the Fiat immobilizer works on the 500e

• Fiat assembled the first 500e in Toluca, Mexico, from late 2012 until mid-2019.
• Fiat sold the first 500e only in a limited number of states, mostly California, rather than nationwide.
• The key fob's lock and unlock buttons also operate the charge port door, according to the owner's manual.
• A weak 12-volt battery can make a healthy 500e key seem dead, so test it before replacing the key.

Programming a 2018 500e key

Key programming runs through the OBD-II port with Fiat immobilizer software and the security PIN, much like the gas 500. The electric drivetrain adds modules the gas car doesn't have, so we confirm tool coverage for the exact VIN first. We also keep the 12-volt battery supported during the session, because a sagging 12-volt supply is a common reason programming fails on electric cars.

Spare keys are usually possible. With low production numbers, remote availability and all-keys-lost coverage vary by VIN, so we confirm before quoting.

Lost every key to your 500e?

Losing every key is fixable on most Fiats, but it takes more than a cut blade. On the 500, 500c and 500L, we verify ownership, decode the SIP22 door lock or cut a blade from the key code, then connect to the OBD-II port, read or enter the security PIN and program a new flip key. If you kept the code card that came with a new car, it speeds up the cutting step. The 500X needs AES-capable equipment, and some push-button or late-model cars involve extra security procedures that we explain on the phone. The Mazda-built 124 Spider depends on tool coverage for its VIN, and the plate stamped with its key code number helps on the cutting side. For the 2024 and newer 500e, plan on a dealer-supplied fob. Have your ID and registration or title ready, and give us the VIN when you call so we can confirm the route before we drive out.

1. Gather your documents and the VIN. Call with the year, make, model and VIN if you can read it through the windshield, plus where the car is parked. Those details let us confirm whether your Fiat 500e can be done on-site and bring the right key, so the first trip is the only trip.
2. Get into the vehicle without damage. Entry comes before key-making because we need access to the ignition, the OBD-II port and sometimes the documents in the glove box. We take care with weather stripping, door frames and paint, and we confirm the dash VIN matches your registration before going any further.
3. Originate a new key from the car. Originating a key means building it without a sample. The door lock usually reveals most of the cuts; any it doesn't are worked out by test-cutting and trying the ignition or a second lock. The finished blade should feel like a factory key, not a forced fit.
4. Program the key to the immobilizer. All-keys-lost programming often takes longer than adding a key, because the car has no trusted key to authorize the change. We follow the procedure your Fiat 500e requires, then confirm the engine starts and keeps running and the remote or keyless functions respond.
5. Erase missing keys and add a spare. Once the car starts, we remove the lost keys from memory wherever the system allows, so they can't start the engine if someone finds them. Making a second key during the same visit costs much less than a repeat all-keys-lost call down the road.

Why a spare key pays for itself

• Two drivers sharing one key is a daily negotiation. A second key lets a partner, teenager or coworker use the vehicle without handing keys back and forth in parking lots, and it means one person losing their key ring doesn't leave the whole household stuck.
• A spare stored safely at home rescues you from a locked car with the fob sitting on the seat, a key dropped somewhere along a hiking trail, or a fob that stops responding on a busy morning. Keep it indoors, never in a magnetic box under the bumper.
• When you sell or trade in the vehicle, buyers and dealers expect two keys. A missing key can come up during an appraisal or a private-sale negotiation, so having both on hand keeps the conversation about the car, not about what it will cost the next owner to replace one.

Dealer or mobile locksmith?

Price and parts are the other half of the comparison. Dealers typically sell factory keys only and charge their posted service rates for programming. We offer factory keys where it matters and quality aftermarket alternatives where they perform well, and the quote covers cutting, programming and the trip, with nothing tacked on at the end. Timing differs too. Dealer service departments generally keep business hours, while we take automotive calls every day from 6:30 a.m. to 11:30 p.m., which covers early commutes and late evenings. We're closed overnight, and we'll be upfront if your timing means the dealer or a next-day visit is the better plan. Neither option is wrong; the right one depends on your 500e and your schedule.

500e key battery

Most fobs for a 2018 Fiat 500e open along a small slot in the seam; a coin or a plastic pry tool works better than a screwdriver, which chews up the housing. If the fob hides a mechanical blade, slide it out first, since the case often opens from that gap. Note which side of the old cell faces up, swap in a fresh CR2032, and press the halves together until they click all the way around. Handle the new battery by its edges, because skin oil on the faces can hurt contact. In most cases the fob keeps its programming through a battery change, so test lock, unlock and start, and you're done.

How the job works

1. Identify the exact key your 500e uses. Every job starts with the VIN, the trim and a look at any key you still have. From those we confirm the keyway, the transponder or smart-key chip, the remote frequency, the FCC ID and the button layout. Two Fiat 500e keys that look identical can carry different electronics, so this step keeps the wrong part from ever reaching the car.
2. Verify ownership before any work. Before cutting or programming, we compare your government photo ID with the vehicle registration or title and check that the VIN on the paperwork matches the VIN on the dash. If the registration is locked inside, we open the car first, confirm the documents, and only then make the key.
3. Get the key code or decode the lock. If you still have a working key, we can read its cuts directly and check them against the factory depths for the Fiat keyway. A worn key gets corrected back to spec during this step, so the new key turns crisply instead of reproducing years of wear in a fresh piece of metal.
4. Cut the blade on-site. Our van carries a code-cutting machine that handles both traditional edge-cut blades and the laser-cut, side-milled profiles common on newer keys. The blade is cut to the code, then test-fitted in a door lock and the ignition or emergency keyhole to confirm smooth operation before any programming begins.
5. Program the chip, remote or smart key. Programming tells the car's computers that the new key belongs to the vehicle. Transponder chips are added to the immobilizer, remote buttons to the body control module, and proximity fobs to the keyless system. If a step requires dealer-only access on your 500e, you'll have heard that before we arrived, not halfway through the job.
6. Test everything and clear out old keys. The last step is a short walkthrough. We show you how many keys the car now recognizes, point out the dead-fob start method for your vehicle, and hand you an itemized receipt. If a spare makes sense, it's simplest to add it during this same visit while the equipment is already connected.

What affects the price of a 500e key

• The type of key. Price follows complexity. The more the key does, the more it costs to replace: brass blade, then chip, then remote buttons, then full keyless entry and push-button start. If your 500e came with different key styles by trim, the one your car actually uses is the one that sets the quote.
• Programming complexity and security access. Two cars with similar-looking keys can program very differently. Newer platforms often guard key programming behind encrypted access or paid credentials, while older systems allow straightforward OBD-II pairing. We check the exact procedure for your VIN before quoting, so the number reflects the real work involved.
• Blade style and cutting. The blade still matters on keyless cars, because the emergency insert has to fit the door lock. Cutting by code is standard for us. Decoding a door lock when no key or code exists adds time, and so does progressing any cuts the door lock doesn't show.
• Travel, timing and extra repairs. Sometimes a key problem is really a lock problem: an ignition that won't turn even with the right key, or a door cylinder that has been jammed for years. Fixing those is separate work. We point them out, explain the options, and quote the whole job up front so the bill holds no surprises.

Call (951) 903-3193 with your VIN and the keys you still have, and we'll quote the job before any work starts.

Common Fiat key problems

• Inexpensive online Fiat flip keys often arrive locked or uncoded. Many must be pre-coded on a key programmer before the car will learn them, so a key that won't program is often the wrong blank rather than a fault in the car.
• Remote range fades as the CR2032 battery in a Fiat flip key ages, and the battery contacts in cheap replacement shells can lose tension. If a fresh battery doesn't help, the remote may need re-syncing or the board may be cracked.
• A key that turns but won't start the engine usually means the immobilizer doesn't recognize its transponder: a damaged chip, a key programmed to another car, or a spare that lost its pairing. Reprogramming fixes it; the ignition is rarely at fault.
• Flip-key hinges on the 500 and 500L wear out over time. The blade stops locking open or swings loosely, often because the pivot pin has worked free. A new shell with the original circuit board moved over usually fixes it.

Tips from a mobile locksmith

• Southern California heat is hard on keys. Fob batteries drain faster, plastic housings turn brittle, and rubber button pads crack when a key spends summer afternoons on a dashboard or in a sunny cup holder. Carry the fob with you or keep it shaded, and replace batteries before summer rather than after they fail.
• Make the spare before you need it. Adding a key while one still works is quicker and less expensive than starting from nothing, and it keeps the simpler programming options available. Good moments are right after buying the car, or as soon as one of your two keys goes missing.
• Be careful with discount fobs from online marketplaces. A listing may match your remote's shape while using a different frequency, chip or FCC ID, and many used smart keys are locked to their original vehicle. If you already bought one, send us the listing or a photo before the visit so nobody pays for a programming attempt that can't work.

Proof of ownership

Not every situation fits the simple case, so here's how we handle the common exceptions. For a leased or financed vehicle, a registration that lists you as the registered owner or lessee works with your ID. If you just bought the car, bring the signed title or bill of sale along with your ID. For a company or fleet vehicle, we need written authorization from the business plus the driver's ID. If the car belongs to a family member, the registered owner should be present or provide signed permission and a copy of their ID. Rental vehicles go through the rental company.

Need a 2018 Fiat 500e key?

Locked out, keyless, or just tired of a fob that only works half the time? Julian's Locksmith can help with your 500e in Southern California. Have your registration and photo ID ready, call (951) 903-3193, and we'll give you an honest answer about what we can do on-site and what it will cost before we head your way.