Chrysler LHS Key Replacement

LHS keys by generation

An LHS key is a Y159-keyway blade with a 4D64 transponder, the pattern sold as the Ilco Y160-PT blank. Keyless entry uses a separate four-button fob with lock, unlock, trunk and panic. The 2000 fob is FCC ID GQ43VT9T and the 2001 fob is GQ43VT17T, so the model year matters when ordering a remote, even though the two look much alike. Both take CR2016 batteries. New keys are written to the immobilizer module over OBD-II with the 4-digit PIN, and current programmers can typically retrieve that PIN from the module on these cars. The 2001 fob can be added with the on-board sequence if one working remote is on hand. With no keys at all, we originate a key by code or lock decoding and program it at your location.

Chrysler key security

Chrysler began fitting its Sentry Key Immobilizer System (SKIS) in the late 1990s, and by the 2001 model year most Chryslers in our range used it. The first wave of keys carried a Texas Instruments 4D64 chip in a head cut for the Y159-family keyway, sold as the Ilco Y160-PT blank. From about 2004 the chip changed to a Philips ID46, and most cars paired it with a remote-head key that put the transponder and the keyless entry buttons in one piece. For 2008 the 300 and Town & Country moved to the fobik, a blade-less remote that turns inside a wireless ignition node (WIN), with a proximity version for push-button start. The 2011 redesign of the 300 added a proximity smart key, and the Pacifica minivan, the 2015–2017 200 and the 2019–2023 300 use fobs with Hitag AES encryption. Vehicles from 2018 on also carry a secure gateway module that limits what aftermarket tools can write. Two models break the pattern: the Mitsubishi-built Sebring coupe uses a 4D61 chip and a Mitsubishi blade, and the Mercedes-based Crossfire uses an HU64 flip key with Mercedes immobilizer electronics.

Most Chrysler key work runs through the OBD-II port and a 4-digit security PIN tied to the vehicle. Current programmers can read that PIN from the immobilizer on many older models; on others it comes from the dealer by VIN, which requires proof of ownership. Many cars through about 2010 also have an owner-level key-learn routine, but it needs two working keys already in hand, so it is no help once you are down to one or none. A remote-head key can need the chip and the buttons learned in separate steps, so a key that starts the engine may still need its remote side set up. Most 2011 and newer remotes need a programming tool. On 2018 and newer vehicles, the secure gateway module adds a bypass cable or authenticated login to every job. Before we cut or program anything we verify your ID and ownership, and we quote the whole job, including key, cutting and programming, before starting.

All LHS keys lost

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. Find your registration or title and a government photo ID in the same name. Note the VIN, which is printed on the driver's side of the dashboard and usually on your insurance card. If the paperwork is locked in the car, tell us; we'll open the vehicle first and check it there.
2. Get into the vehicle without damage. If the car is locked, we open it with non-destructive tools such as an inflatable wedge and a long-reach rod, or by picking the door lock. Some vehicles need a careful approach to avoid triggering the alarm, which can interfere with programming later.
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. 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.

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 2001 Chrysler LHS 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.

How the job works

1. Identify the exact key your LHS uses. We ask a few quick questions on the phone: the year, whether the car starts with a turn key or a button, how many keys you have left, and whether the remote still works the doors. Then we check the VIN against our programming references so the van arrives with the correct blank or fob, not a close guess.
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 Chrysler 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 LHS, you'll have heard that before we arrived, not halfway through the job.
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 an LHS 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 LHS came with different key styles by trim, the one your car actually uses is the one that sets the quote.
• 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. On some vehicles, losing the last key changes the programming entirely, from a quick add-key procedure to a full immobilizer reset or a module read on the bench. That extra labor shows up in the price, and it's the strongest argument for keeping a spare in the house.
• Travel, timing and extra repairs. Because we come to you, the distance from our San Bernardino base and the time of the call play a part. So does anything we find along the way, such as a worn ignition cylinder or a seized door lock. You hear about each item and get a quote before we start work.

LHS key types explained

• 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 LHS, 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 LHS 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.

Why a spare key pays for itself

• Some vehicles make it hard to add a key once you're down to one. Certain immobilizer systems let an owner program an extra key on-board only when two working keys are present, so a second key preserves the easy options for later and avoids a full reset.
• 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.
• Electronics fail without warning. A fob dropped on concrete, run through the washing machine or soaked at the pool can quit for good. With a second programmed key, that's an annoyance you fix on your own schedule, not a stranded car that needs attention today.

Tips from a mobile locksmith

• 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.
• Every so often, use the mechanical blade in the driver's door lock. Cylinders that go years without a key can seize from dust and dried grease, and you won't find out until the day the fob dies and the blade is your only way in. A small shot of dry lubricant keeps the lock ready.
• 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.
• Never hide a spare key or fob on the outside of the car. Magnetic boxes in wheel wells and under bumpers are the first places a thief checks, and with a proximity fob, a hidden key can let anyone open the doors and drive away. Keep the spare at home or with someone you trust.

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.
• On 2008–2016 Town & Country vans and 2008–2010 300s, a fobik that will not turn or is not recognized may be a worn fob or a failing wireless ignition node. We test with a known-good fob before anyone replaces parts.
• Remote-head keys from the 2004–2014 era often crack where the blade meets the plastic head. A new shell can save the electronics, but the transponder chip has to move with them or the car will not stay running.
• A remote that only works from a few feet away usually needs a fresh battery. Fobs from 1999–2006 use CR2016 coin cells, while most later remote-head keys, fobiks and smart keys take a single CR2032. Inland summer heat is hard on these cells, so the battery is the first check.
• 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.
• 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.
• 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.
• Sebring orders get mixed up often: the sedan and convertible use Chrysler keys and fobs, while the 2001–2005 Sebring coupe uses Mitsubishi-based keys and remotes that fit none of the other Sebrings.

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.