2003 Chrysler Concorde Key Replacement

2003 Concorde key specs

The Concorde's ignition key is a Y159-keyway blade with a 4D64 transponder in the head, sold as the Ilco Y160-PT blank. Keyless entry uses a separate four-button fob: FCC ID GQ43VT9T for 2000 and GQ43VT17T for 2001–2004, both powered by CR2016 batteries and both with lock, unlock, trunk and panic buttons. If your Concorde never had a fob, only the transponder key is needed to drive it.

What's specific to the 2003 Concorde

The 2003 Chrysler Concorde is the fourth of 5 model years in the Concorde LH (2nd generation) (2000–2004), so it shares its key system with the rest of that run, which makes replacement parts easy to source. A 2003 Chrysler Concorde is about 23 years old. Original keys are often worn smooth, and some factory remotes for cars this age are discontinued, so we may suggest a quality aftermarket remote or a separate fob. Because older immobilizers are simpler, all-keys-lost jobs on cars this age are usually more straightforward than on late models.

If a newly cut key turns the 2003 Concorde's ignition but the engine cranks and dies, the transponder isn't recognized yet; that's a programming step, not a cutting problem, and it's handled at the car.

Key options for the 2003 Chrysler Concorde

• Transponder (chip) key. There are two ways to give a new transponder key the right identity. Cloning reads the chip in a working key and writes that same ID onto a special cloneable chip, so the car can't tell the two apart. Programming adds a brand-new key ID to the immobilizer's memory through the OBD-II port, sometimes after entering a security PIN tied to the VIN. Cloning is handy when you have a working key and the chip family supports it. Programming is the better choice when keys are lost, because it also lets us remove keys you no longer control from the car's memory. For your Chrysler Concorde, we'll explain which method fits and why.
• Key with separate remote fob. Separate remotes are easy to find online, which is exactly why they cause trouble. A listing can show the same shell as your Chrysler Concorde remote while hiding a different FCC ID, frequency or internal chip, and some used remotes are locked to the first vehicle they were paired with. We're glad to look at one you've already bought, and we'll tell you honestly whether it can be paired before charging you to try. If the remote side of your setup has become unreliable, it's also worth asking whether a fresh remote and a newly cut key, matched together, would cost less than chasing repairs on aging parts.

How the Chrysler immobilizer works on the Concorde

• Supplier fitment for the Y160-PT transponder key covers the 1998–2004 Concorde, matching the 300M.
• The 2001–2004 GQ43VT17T remote is shared with the 300M, the 2001 LHS and the Sebring sedan and convertible.
• The Concorde ended after 2004 and was succeeded by the rear-drive 300.

Programming a 2003 Concorde key

Programming runs through the immobilizer module via the OBD-II port and needs the 4-digit PIN, which current tools can usually pull on this platform. The 2001–2004 remote supports an on-board learning sequence when you already have one working fob. Without any working key, we cut a blade by code or from the door lock and program it on site.

Lost every key to your Concorde?

Losing every key is usually recoverable on a Chrysler without towing it to a dealer. For bladed keys, we decode a door lock or cut by code from the VIN record after confirming you own the vehicle, then program a new transponder or remote-head key through the OBD-II port. Fobik-equipped vans and sedans need no ignition cut, so that work is mostly electronic plus a new emergency insert for the door. The harder cases are the AES-encrypted smart keys on the Pacifica, Voyager, 2015–2017 200 and 2019–2023 300, where some vehicles need the radio frequency hub handled directly or a dealer visit, and the Crossfire, whose Mercedes-derived keys are normally ordered pre-coded. We tell you which case applies 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 Chrysler Concorde 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. With no key to copy, the cuts come from the vehicle itself. We retrieve the key code through manufacturer channels where possible, or decode a door lock with a pick-decoder tool. Then we cut the blade on our code machine and confirm it turns the lock smoothly.
4. Program the key to the immobilizer. Next, the new key is introduced to the car's security system. Many vehicles allow this through the OBD-II port with a PIN or security procedure. Some all-keys-lost cases require reading a module on the bench, and a few platforms only allow dealer programming, which we'll tell you up front.
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.
• 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.
• A spare turns a future all-keys-lost emergency into a simple add-a-key job. With one working key in hand, programming is quicker, and the chip or fob can often be paired without decoding locks or reading modules, which keeps the cost of a lost key far lower.

Dealer or mobile locksmith?

The biggest difference between a dealership and a mobile locksmith is where the work happens. A dealer programs keys in its service bay, so if every key is lost, the car usually has to be towed there, and you work around the service department's schedule and the time it takes to order a key by VIN. Julian's Locksmith brings the cutting machine, key blanks and programming equipment to the car, whether it sits in your driveway, a workplace lot or a parking structure. For a 2003 Chrysler Concorde we can program on-site, that means no tow and no shuttle rides back and forth. The trade-off is real, though: on vehicles where only the dealer can program keys, a tow or appointment may still be necessary, and we'll say so before you spend anything on our visit.

Concorde key battery

Battery details for the 2003 Concorde: CR2016 (remote). Swap cells one at a time and match each one exactly; if a key still fails with a fresh battery, the board, buttons or programming may be the problem, which we can test on site.

How the job works

1. Identify the exact key your Concorde 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 Chrysler Concorde 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. California holds licensed locksmiths responsible for knowing whose car they're making keys for. We record your name, the VIN and the plate on a work order. If you aren't the registered owner, you'll need the owner's written authorization along with your own photo ID before we begin.
3. Get the key code or decode the lock. A key is cut from a code, not a guess. When the factory code can be retrieved through manufacturer channels after ownership is verified, we use it. When it can't, we decode a door lock with a pick-decoder tool that reads the wafer positions without damaging anything, then work out any missing cuts.
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. With the blade done, we connect to the OBD-II port and register the new key with the immobilizer. Depending on the Chrysler system, this may involve a security PIN, a timed waiting period, or on-board button sequences for the remote. On some vehicles we clone a working key's chip instead, when that's the more reliable path.
6. Test everything and clear out old keys. Before we leave, every function gets checked: doors, trunk or liftgate, panic button, remote range, engine start, and the emergency blade in the driver's door. If keys are missing, we delete them from the car's memory where the system allows, so a lost key can no longer start the engine.

What affects the price of a Concorde key

• Factory or aftermarket parts. Factory keys and fobs carry the manufacturer's part number and usually the highest parts cost. Quality aftermarket keys use compatible electronics at a lower price and work well on many vehicles. We tell you which options we trust for your car, and where an aftermarket version has known range or fit issues, we steer you to OEM.
• All keys lost or adding a key. Adding a key while a working one is in hand is the simpler job. With every key gone, we may have to open the car, decode a lock to originate the cuts, and run a longer programming routine, so all-keys-lost work takes more time and costs more.
• 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. Traditional edge-cut blades are quick to cut. High-security laser-cut blades, with a groove milled into the side, need a specialized machine and more care, and the blanks themselves cost more. If we have to decode a lock to find the cuts, that adds labor as well.

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

Common Chrysler key problems

• Worn Y159 ignition keys on older minivans, PT Cruisers and LH sedans can stop turning smoothly or bind in the cylinder. Copying a worn key copies the wear, so we cut replacements to the original code rather than tracing the old blade.
• The 2018 and 2019 Chrysler 300 smart keys look identical but carry different transponder chips and different FCC IDs, M3N-40821302 versus M3M-40821302. Ordering by appearance alone leads to a fob that will not program, so match the model year and part number.
• On 2018 and newer Chryslers, the secure gateway module blocks many aftermarket scan tools. Key programming still works with a bypass cable or authenticated access, which is why a shop without that setup may tell you only the dealer can help.
• Remotes bought online for 2004 and later Chryslers still have to be paired to the car. Some cars through about 2010 can learn one at home if you hold two working keys; otherwise it takes a programming tool, and used fobs must be unlocked first.

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.
• Photograph the back of your fob and any key tag that came with the car. The FCC ID, part number and key code printed there make ordering a replacement faster and more accurate. Store the photos somewhere you can reach from any device, not only on the phone that might go missing along with the keys.
• When a key's head cracks or its blade bends, replace it before it fails. A transponder chip can slip out of a split head, and a bent blade can break off inside the ignition or door lock, turning a simple key replacement into an extraction and repair job. Small symptoms are the inexpensive time to act.

Proof of ownership

Making car keys is regulated work in California. Locksmiths are licensed and overseen by the Bureau of Security and Investigative Services under the Locksmith Act, Business and Professions Code section 6980 and following, and Julian's Locksmith holds company license LCO7891. Verification protects you more than anyone: a locksmith who will make a key for whoever asks will also make one for someone who wants your car. We record your name, the vehicle and its VIN on a work order, and we politely decline jobs where ownership can't be established. You can look up our license at search.dca.ca.gov.

Need a 2003 Chrysler Concorde key?

Locked out, keyless, or just tired of a fob that only works half the time? Julian's Locksmith can help with your Concorde 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.