Cadillac Key Replacement in Cypress, CA

How Cadillac keys and immobilizers work

Cadillac has used almost every generation of General Motors theft deterrent since 2000, so the key in your hand depends heavily on the model year. The last Eldorados relied on a resistor pellet in the key blade, which the car reads as a resistance value rather than a code. DeVille, Seville and early CTS cars use PASS-Key III, a transponder chip molded into the key head. Escalades built before 2007 took a different path: Passlock, where the sensor lives in the ignition lock cylinder and the key itself carries no chip. Later turn-key cars moved to PASS-Key III+ with a Philips ID46-family chip, while the XLR in 2004 and the STS in 2005 brought Keyless Access fobs and push-button start to the lineup. Proximity fobs then spread across nearly every model, and many of them can be learned on-board in about 30 minutes. Starting with the 2020 CT4 and CT5 and the 2021 Escalade, GM's Global B electrical architecture brought Hitag Pro fobs and encrypted programming, and newer cars increasingly need a professional programmer. The Ultium electric models, from the Lyriq onward, add another layer. Before we quote, we confirm the year, model and key style so you know exactly what the job involves.

Cadillac key programming

Most turn-key and proximity Cadillacs from 2006 through about 2024 can be programmed through the OBD-II port with a professional key tool, and many also have a built-in learn procedure. GM builds a security wait into both routes, usually three timed periods of about 10 minutes each, before the module accepts a new key. PASS-Key III sedans can learn an added key on-board when a working key is present. Separate remotes on the DTS and 2007-2014 Escalade usually pair through the Driver Information Center. Keyless Access cars such as the STS, SRX, CTS and ATS use a door-cylinder learn and a console pocket that reads the fob, while the XLR uses a rear-fascia cylinder and a glove box pocket. Early CT4, CT5 and Escalade Global B cars can add a fob from a menu if two working fobs are present, and newer cars and every lost-key job call for a professional programmer with GM authorization. Every Cadillac fob with an emergency blade also needs that blade cut to match your door lock.

All Cadillac keys lost

Losing every key to a Cadillac is usually fixable where the car sits, but the path depends on the system. On Passlock Escalades and pellet-key Eldorados it is mostly a mechanical job: we cut a key to your locks or by code, then match the pellet value or let the truck relearn. PASS-Key III and later transponder cars need a new key plus a relearn that erases the missing keys. Proximity-fob models need a new fob, an emergency blade cut to your door lock, and a learn session with security waits, done on-board or through the OBD-II port. For newer Escalades, the CT4, CT5, the 2025 XT crossovers and the Ultium EVs, all-keys-lost can require dealer involvement. In every case we verify your ID and proof of ownership, such as registration or title, before we make a key.

Cadillac models we cover

• ATS (2013–2019). The ATS was Cadillac's compact rear- or all-wheel-drive sport sedan, sold in the US for the 2013 through 2019 model years, with a coupe added for 2015 and the high-performance ATS-V arriving for 2016. It rode on GM's Alpha platform, later shared with the sixth-generation Camaro, and was aimed squarely at the BMW 3 Series. The ATS uses a proximity fob with push-button start, and the fob design changed partway through the run, which matters when you order a replacement.
• Catera (2000–2001). The Catera was Cadillac's entry-level rear-drive sedan for 1997 through 2001, a US version of the German-built Opel Omega. Only the final two model years fall inside our range. Because it was engineered in Europe and built in Germany, parts and tool coverage can be thinner than for other Cadillacs of the same period, and replacement components are getting harder to find. We treat Catera keys as a case-by-case job and tell you honestly what is possible after we look at your key and car.
• Celestiq (2025–2026). The Celestiq is Cadillac's hand-built electric flagship, assembled in very small numbers in Warren, Michigan, and built to order for each buyer. It uses GM's Ultium battery technology and sits far above every other Cadillac in price and production volume. It arrived as a 2025 model, with 2026 cars following. Its keys and access hardware are dealer-supplied, and we are not aware of any aftermarket key programming coverage for it, so this page explains what we can and cannot do.
• CT4 (2020–2026). The CT4 replaced the ATS as Cadillac's compact rear- or all-wheel-drive sedan for 2020 and ran through the 2026 model year, with production ending in mid-2026 at Lansing Grand River Assembly. Performance versions included the CT4-V and, from 2022, the CT4-V Blackwing with a twin-turbo V6 and a manual transmission. Along with the CT5, it was among the first Cadillacs built on the Global B electrical architecture, which changed how new keys are programmed compared with the ATS before it.
• CT5 (2020–2026). The CT5 took over from the CTS as Cadillac's midsize rear- or all-wheel-drive sport sedan for 2020, and a 2025 refresh brought a restyled nose and a large 33-inch display. The CT5-V and supercharged CT5-V Blackwing anchor the performance end. It shares GM's Global B electrical architecture with the CT4 and the current Escalade, which means encrypted proximity fobs and more involved programming than older Cadillacs.
• CT6 (2016–2020). The CT6 was Cadillac's full-size rear- and all-wheel-drive flagship sedan for the 2016 through 2020 model years in the US. It offered four- and six-cylinder engines, a plug-in hybrid for 2017 and 2018, and the twin-turbo V8 CT6-V for 2019 and 2020, along with an early version of Super Cruise. Built at Detroit-Hamtramck, it uses the same generation of proximity fob hardware as the ATS and XT5 of its time, which professional tools cover well.
• CTS (2003–2019). The CTS was Cadillac's midsize rear- and all-wheel-drive sport sedan from 2003 through 2019, and the car that launched the brand's sharp-edged design era. Across three generations it also came as a coupe and a Sport Wagon, and each generation had a high-performance CTS-V. The key system changed with each redesign: a transponder turn key at first, then a choice of turn key or Keyless Access, and finally a proximity fob on every car. The CT5 replaced it for 2020.
• DeVille (2000–2005). The 2000-2005 DeVille was the last car to wear the DeVille name, a front-drive full-size sedan powered by the Northstar V8. Trims included the base DeVille, the DHS luxury model and the sportier DTS, a name that later became its own model. The 2000 DeVille was the first production car offered with a Night Vision infrared camera. For keys, it uses GM's PASS-Key III transponder system, which locksmiths can handle on-site without a dealer.
• DTS (2006–2011). The DTS replaced the DeVille for 2006 and served as Cadillac's front-drive full-size sedan through 2011, powered by the Northstar V8. Coachbuilders also turned it into limousines and funeral coaches, so you still see it in livery work. Unlike the STS and XLR of the same years, the DTS kept a conventional key ignition with a separate remote, which keeps replacement keys simpler than on Cadillac's early push-button models.
• Eldorado (2000–2002). The Eldorado was Cadillac's front-drive personal luxury coupe, and the 2000-2002 cars are the final years of a nameplate that began in 1953. Power came from the Northstar V8 in ESC and ETC trims, and Cadillac closed the run with a Collector Series in 2002. Its key system predates transponders: a small resistor pellet in the key blade is read by the car before it lets the engine start, which makes replacement keys a cutting and matching job rather than a programming job.
• ELR (2014–2016). The ELR was Cadillac's plug-in hybrid luxury coupe, built around the same Voltec extended-range system as the Chevrolet Volt. It was sold for the 2014 and 2016 model years only; Cadillac skipped 2015 and returned with a final 2016 car before production ended in February 2016. Sales were small, so parts and especially fobs are less common than for other Cadillacs of the same period, and that shapes how quickly a lost-key job can be finished.
• Escalade (2000–2026). The Escalade is Cadillac's full-size, body-on-frame SUV and the brand's best-known model. It launched for 1999 on GM's truck platform, skipped the 2001 model year, and has been redesigned four times since, moving from plain keys to transponder keys, then proximity fobs, and now encrypted fobs on GM's newest electrical system. The long-wheelbase ESV, the EXT pickup and the electric Escalade IQ have their own pages, though their keys often match the standard truck of the same year.
• Escalade ESV (2003–2026). The Escalade ESV is the long-wheelbase version of the Escalade, built on the Suburban-length chassis for more third-row room and cargo space. It arrived for the 2003 model year and has followed the standard Escalade through every redesign since, so its key systems track the regular truck year for year. Many ESVs work as family haulers and livery vehicles with several drivers, which makes an extra key or fob, and a plan for lockouts, especially useful.
• Escalade EXT (2002–2013). The Escalade EXT was a luxury pickup built on the Chevrolet Avalanche platform, complete with the Avalanche's fold-down midgate that opens the cab to the bed. It was sold for 2002 through 2006 and again for 2007 through 2013, after which Cadillac dropped it. Keys follow the matching Escalade of each era: chip-free Passlock keys at first, then transponder keys with separate remotes, and there was never a push-button EXT.
• Escalade IQ (2025–2026). The Escalade IQ is the battery-electric Escalade, built at GM's Factory Zero in Detroit on the Ultium platform and sold from the 2025 model year. A longer Escalade IQL joined for 2026 to match the ESV's extra length. It shares the Escalade name but not its key programming: like Cadillac's other Ultium models, its proximity fob and security system are newer than what most aftermarket key tools fully support, so new fobs come through the dealer.
• Lyriq (2023–2026). The Lyriq was Cadillac's first Ultium-based electric vehicle, a two-row midsize crossover that went on sale for the 2023 model year from Spring Hill, Tennessee. Rear- and all-wheel-drive versions are offered, and the high-performance Lyriq-V arrived for 2026. It uses a proximity fob with keyless start, and its security architecture is newer than what most aftermarket key programmers handle, so new fobs come from the dealer while we help with the problems around them.
• Optiq (2025–2026). The Optiq is Cadillac's compact electric crossover and the smallest member of its Ultium lineup, sold in the US from the 2025 model year. It launched with all-wheel drive only, and rear-wheel-drive versions plus the Optiq-V performance model joined for 2026. It sits at the entry of Cadillac's SUV lineup now that the XT4 has ended. Access is by proximity fob with keyless start, and aftermarket programming support for its newest-generation fobs is still very limited.
• Seville (2000–2004). The fifth and final Seville ran from 1998 through 2004, so the 2000-2004 cars are the end of the line for the name. Offered in SLS luxury and STS touring trims, it was a front-drive midsize sedan with the Northstar V8. Its PASS-Key III transponder key system is one of the more locksmith-friendly of the era, because a lost-key relearn can be done at the car with time and a correctly cut key, without a dealer visit.
• SRX (2004–2016). The SRX was Cadillac's midsize crossover before the XT5 replaced it. The first generation, 2004 through 2009, was a rear- or all-wheel-drive crossover on the Sigma platform with an available third row. The second generation, 2010 through 2016, became a front- or all-wheel-drive two-row crossover and one of Cadillac's best sellers. The two generations use very different keys: a transponder turn key first, then a proximity fob with push-button start.
• STS (2005–2011). The STS replaced the Seville as Cadillac's midsize rear- and all-wheel-drive luxury sedan for 2005 and ran through 2011, sharing the Sigma platform with the CTS and SRX. A supercharged STS-V was offered from 2006 to 2009. Every STS used Keyless Access with a proximity fob and push-button start, an early use of the technology in a luxury sedan, and the fob changed with the 2008 refresh, so it helps to know your model year before you call.
• Vistiq (2026–2026). The Vistiq is Cadillac's three-row electric crossover, built in Spring Hill, Tennessee, and sold from the 2026 model year. It slots between the Lyriq and the Escalade IQ and effectively replaced the gas-powered XT6 in Cadillac's lineup. Dual-motor all-wheel drive is standard. Like Cadillac's other Ultium models, it uses a proximity fob and keyless start, and key programming currently runs through the dealer rather than aftermarket tools.
• XLR (2004–2009). The XLR was Cadillac's two-seat retractable hardtop roadster, built in Bowling Green, Kentucky, alongside the Corvette for the 2004 through 2009 model years. The supercharged XLR-V joined for 2006. It was an early GM car with Keyless Access and push-button start as standard equipment. Production was small, so fobs and parts are harder to find than for higher-volume Cadillacs, and that is the main limit on what a locksmith can do for one.
• XT4 (2019–2025). The XT4 was Cadillac's subcompact luxury crossover, built at GM's Fairfax plant in Kansas City, Kansas, from the 2019 through 2025 model years. It used a turbocharged four-cylinder with front- or all-wheel drive, and a 2024 refresh brought a 33-inch curved display. North American production ended in early 2025 as Fairfax was retooled for the next Chevrolet Bolt, and Cadillac has not named a direct replacement; the electric Optiq is now its smallest SUV. Every XT4 uses push-button start with a proximity fob.
• XT5 (2017–2026). The XT5 replaced the SRX as Cadillac's two-row midsize crossover for the 2017 model year and became one of the brand's best sellers. Built in Spring Hill, Tennessee, it received a 2020 refresh that made a turbocharged four-cylinder the base engine alongside the V6 and continued through the 2026 model year. Every XT5 uses a proximity fob with push-button start, though the fob itself changed during the run, which is the first thing we check when you need a spare or replacement.
• XT6 (2020–2025). The XT6 was Cadillac's three-row crossover, built in Spring Hill, Tennessee, from the 2020 through 2025 model years. It shared its underpinnings with the XT5 and offered a V6, with a turbocharged four-cylinder available on some versions. GM ended it after 2025 as the electric Vistiq took its place in the lineup. Every XT6 uses push-button start with a five-button proximity fob.
• XTS (2013–2019). The XTS was Cadillac's front- and all-wheel-drive full-size sedan for 2013 through 2019, replacing both the DTS and the STS. A twin-turbo XTS V-Sport was offered for several years, and the XTS became a common base for livery cars, limousines and funeral coaches. The XTS uses Keyless Access with push-button start, and its key system is well covered by professional tools, so spares and lost-key jobs are usually handled where the car is parked.

Common Cadillac key problems

• A flashing security light and a crank-no-start on a 2002-2006 Escalade often points to a failing Passlock sensor in the ignition cylinder rather than the key. A relearn may bring it back for a while, but the sensor or cylinder usually needs repair.
• PASS-Key III keys on DeVille and Seville sedans wear at the blade and crack at the head, which can expose or loosen the chip. A key that starts the car only some of the time is a good reason to have a spare made now.
• Cadillac proximity fobs usually show a low-battery or remote-not-detected message on the Driver Information Center well before they quit. Replacing the coin cell at the first warning avoids a no-start in a parking lot.
• When a fob battery dies completely, many push-button Cadillacs will still start with the fob held in the backup pocket or spot shown in the owner's manual. Many owners never look for it until the day they need it.
• High-mileage DTS and DeVille sedans develop worn ignition cylinders that make the key stick or refuse to turn. Copying a worn key copies the wear, so we prefer to cut a fresh key by code.
• Separate remotes on 2007-2014 Escalades and DTS sedans often fail at the case and buttons before the electronics. A cracked shell or worn rubber pad can sometimes be fixed by moving the circuit board into a new housing.
• CT4, CT5 and 2021-and-later Escalade fobs use encrypted Global B programming, so a bargain fob bought online may never program. Match the FCC ID, frequency and part number on your current fob before buying anything.
• Aftermarket remote starters on older Cadillacs often rely on a bypass module wired into the key system. When that module fails, the car can act as if the correct key is wrong, which looks like a key problem but is not.

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 car and your schedule.

How the job works

1. Identify the exact key your car 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. 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. If you still have a working key, we can read its cuts directly and check them against the factory depths for the Cadillac 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 car, 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.

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.

Cadillac keys in Cypress

Cypress is about 63 miles from our San Bernardino base, roughly 68 minutes in light traffic via I-215 South through Colton and Grand Terrace to SR-91 West through Riverside, Corona and the Santa Ana Canyon. When you call, you get an arrival estimate based on where the technician is and the traffic at that moment. Homes and businesses just off Katella Avenue are routine stops for us. Give the suite or unit number and any gate instructions, and say whether the van can park out front or should pull into a side lot.

Plain version of the schedule: every day, 6:30 a.m.-11:30 p.m. Outside those hours nobody is out on the road, and we'd rather you know that now than discover it in the middle of a lockout. For an overnight safety problem, such as a door that won't latch after a break-in, call the police first.