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BSIS LCO #6792
NASTF CertifiedWhich key does your 911 use?
A high-security metal blade with a transponder chip inside. The remote for locking and unlocking is a separate fob. Straightforward and reliable for its age.
One unit handles everything. The blade, the transponder chip, and the remote buttons are all built together. Three buttons for lock, unlock, and trunk.
The same three-button setup as the remote head key, but the blade folds into the body. Slimmer in your pocket and less likely to snag on things.
A slim fob that communicates with the car passively. Push-button start, proximity unlock when you grab the handle, and a laser-cut emergency blade stored inside for backup.
Looks identical to the earlier smart key. Same push-button start, same emergency blade. The difference is that programming requires a live Porsche server connection, which puts it out of reach for most locksmiths.
992 is the current 911, running Porsche's newest server-auth smart fob. Proximity unlock, push-button start, hidden laser-cut blade. We program a spare in San Diego over the Porsche online session the immobilizer demands. Spare key only, all-keys-lost requires the dealer.
Twenty years of 911 key changes, explained
Transponder key era (1999-2004)
This is where Porsche moved away from basic metal keys and started requiring the transponder chip inside the blade to communicate with the factory immobilizer on every startup. The lock and unlock remote is a separate fob, not built into the key itself. Because programming stays on-board for these cars, losing this key is a problem we can solve without sending you anywhere. We cut the high-security blade and get the transponder paired using diagnostic equipment at your location.
Remote head key era (2005-2008)
Porsche combined the transponder, the key blade, and the lock/unlock remote into one remote head key for this generation. Three buttons, a CR2032 battery, and a high-security blade all in a single unit. Programming stepped up too, requiring dealer-grade programming equipment to pair the transponder chip. There is no DIY path here. If you lost both keys or your only key, a professional with the right tools is the only way back into your car and back on the road.
Flip key era (2009-2012)
The 911 got a slimmer key this generation. The blade folds into the fob body, same three-button layout as before, same transponder chip, same CR2032 battery, but the folding design made it more pocket-friendly and reduced blade snag. On-board programming capability returned for some configurations, though dealer-grade equipment is still needed for transponder pairing. Some models with the PDK gearbox picked up keyless entry features, though push-button start was not yet standard across the line.
Smart key era (2012-2016)
Push-button start became standard here, and the key changed to match. The 911 moved to a slim wallet-style smart key with a laser-cut emergency blade tucked inside and the transponder chip communicating through the factory immobilizer. Programming requires dealer-grade programming equipment, and used keys must be cleared before they can be paired to a new car. If you lost both keys and are stuck somewhere in San Diego County, this is a recoverable situation as long as you have someone with the right access on the way.
Smart key with server authentication (2017-2019)
The smart key looks the same as the previous generation, same slim body, same laser-cut emergency blade, same CR2032 battery. What changed is behind the scenes. Programming now requires a live connection to Porsche's servers through dealer-grade equipment, which is why most locksmiths turn these jobs away. We carry that access on every call, so an all-keys-lost situation on a late 991 is still something we can handle mobile in San Diego County without sending you to a dealership.
992 (Current Generation)
Launched for 2020, the 992 uses Porsche's current server-auth immobilizer. A spare key calls for a live online session, which we run curbside in San Diego.
Porsche 911 Year Lookup
Tap your year for exact key specs and pricing.
Can you program a 911 key yourself?
For 1999 to 2004 models, there is a door cylinder and ignition cycle procedure that programs the remote fob functions, meaning lock, unlock, and panic. That is all it covers. It does nothing for the transponder chip inside the blade, so the car still will not start without professional programming. Remote convenience is DIY-able here; the ignition side is not.
No DIY option on the 2005 to 2008 remote head key. Pairing both the transponder and the remote requires dealer-grade programming equipment plus an immobilizer code. This is a professional-only job from start to finish.
Same answer as the remote head key generation. The flip key's transponder and remote both need dealer-grade equipment to program. There is no at-home procedure that handles the ignition side.
The 2012 to 2016 smart key requires dealer-grade programming equipment and dealer-level access. Any used key also has to be cleared before it can be paired to a different car. No DIY procedure exists for this generation.
Server authentication on 2017 to 2019 models means even many professional locksmiths cannot complete the job. We carry the dealer-grade equipment with live Porsche server connectivity needed to do this mobile in San Diego County. This is not a DIY job under any circumstances.
Common 911 key problems we run into
Fob battery drain
The smart key on 2012 to 2019 models sends a passive signal to the car continuously, even sitting on a counter at home. That constant communication burns through CR2032 batteries faster than most owners expect, sometimes inside a year. The first signs are that proximity unlock stops responding unless you are almost touching the door handle, or the remote range drops off sharply. We test and replace the battery on the spot, and if something deeper is going on, we tell you before touching anything else.
Transponder sync loss
When a 1999 to 2012 911 cranks but will not fire, the first thing we check is battery voltage. A weak car battery or a recently swapped fob battery can knock the transponder chip out of sync with the factory immobilizer. The blade turns, everything feels normal, but the engine refuses to start. We restore the pairing using dealer-grade programming equipment and typically have the car running within an hour. It is a common call in San Diego, especially on cars that sit for extended periods between drives.
Blade wear
A 1999 to 2012 high-security blade that has been used daily for 15 to 20 years can wear down enough that the ignition wafers stop reading it reliably. Owners usually suspect a transponder or electronics problem, but worn blade geometry is a frequent cause. We inspect the blade under magnification. If the profile is still salvageable we recut it; if not, we cut a fresh key. Either way, you find out exactly what the problem is before any work starts.
Keyless signal interference
Parking structures near downtown San Diego and areas with dense cell infrastructure can block the signal between a 991 smart key and the car. The fob is not broken; outside RF interference is the culprit. Pull the laser-cut emergency blade out of the fob, use the keyhole in the driver door handle to get in, then hold the fob against the start button to fire the engine. If this starts happening in normal open locations away from structures, bring it to us and we will run a signal check to rule out an actual fob fault.
What does a replacement Porsche 911 key cost in San Diego?
Every quote covers the key blank, blade cutting, programming, and on-site testing at your location anywhere in San Diego County. No separate trip charge added after the fact.
EZ Car Keyz vs. the Porsche dealer
Here is what the real-world difference looks like.
Skip the Dealer - Call (619) 876-1271How It Works
Tell us your 911
Contact us and give us the exact year plus the variant, whether that is a Carrera, Turbo, Cabrio, or something else. That lets us confirm key type and what programming access the job needs before we leave.
We come to you
Wherever your 911 is sitting in San Diego County, we drive to you. Parking lot, driveway, or roadside, it does not matter.
Cut and program on-site
We cut your high-security or laser-cut blade right there and program the transponder chip to your Porsche's factory immobilizer using dealer-grade programming equipment on the truck.
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Did You Know?
The 991 generation marked the production of the one-millionth Porsche 911 in 2017. That car, finished in a special shade of Irish Green, rolled off the Zuffenhausen assembly line 54 years after the original 911 debuted at the Frankfurt Motor Show in 1963.
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