Locksmith in Stone Mountain, GA: Car Lockouts, Spare Keys and Locks, 24/7

A transponder key carries a small chip in its head that answers the immobilizer when the key turns or the start button is pressed. There are two ways to hand you a second key the car will accept. Cloning reads the identity stored in the chip of a key that already works and writes that identity onto a cloneable blank: the car cannot tell the two apart, and its memory is never touched. Programming works the other way round: a new chip with its own identity is registered in the immobilizer, which afterwards holds one more key than before.

Which of the two is possible depends on the chip family, not on the badge on the grille. The early Texas 4C chip in Toyotas of the late 1990s and early 2000s is a fixed-code chip that gives the same answer every time it is asked. The Texas Crypto chips that followed it, the 40-bit 4D that Toyota blanks mark with a dot and later the 80-bit G and the 128-bit AES H, answer with encryption. So do the Philips ID46 (Hitag2) in Honda's "V" keys and Nissan's NI04T keys, the ID47 (Hitag3) in Honda's "G" keys, and the 128-bit Hitag Pro ID49 in Ford's side-mill keys from 2015.

The key catalogs draw the line. STRATTEC's 2008 transponder guide prints a cloneable alternative blank beside the regular one for Toyota's 4C era and for two early Honda eras: the edge-cut HD106 key of the 1998 to 2002 Accord and Odyssey and the 2001 to 2002 Civic, and the first HO01 high-security key of the 2003 to 2005 Civic, the 2002 to 2006 CR-V, the 2003 to 2004 Odyssey and the 2003 to 2005 Pilot. For the encrypted families, the catalogs behind this page list no cloneable blank, and the new key is registered to the immobilizer instead. Honda's own all-keys-lost bulletin (SB 02-053) sets the limit from the other side: cloneable T5 blanks cannot be used with the immobilizer type it covers. That is where cloning stops: with no working original, there is nothing to copy.

Where both routes exist, they are not equal. A clone leaves the car's memory as it was, so it does not add to the key count, which matters on systems with a ceiling: Ford's owner text allows eight coded keys and Nissan's Altima manual allows four Intelligent Keys. A clone also cannot take anything away. If a key was stolen, or lost together with something that shows where the car lives, a clone of the surviving key leaves the missing one able to start the engine, and programming with an erase of the old keys, where the system allows it, is the fix. Some keys are neither: General Motors' PASSLock vehicles carry no chip in the key, because a magnet in the lock cylinder and a sensor in its housing do the checking, so a spare for a 1997 to 2004 Silverado is a correctly cut blade and nothing more.

Your route is settled on the call from the year, make and model (or the VIN), the number of working keys in hand, and whether any key is missing rather than broken. Bring every working key to the car, and have the title or registration with a photo ID in the same name, since 4Keys checks both before any key is made. A spare from a working key is car key duplication; with none left it becomes an all-keys-lost job, where there is nothing to clone and programming is the only way; the registration side is car key programming, done with dealer-level software under NASTF VSP authorization.

4Keys Locksmith covers the three ZIP codes whose postal city is Stone Mountain, 30083, 30087 and 30088. They take in the small city and a much larger stretch of unincorporated DeKalb, and Stone Mountain addresses also run over the line into Gwinnett. The street address is what the technician needs; the county changes nothing about the service. The same dispatch covers neighboring Tucker and Lithonia.

On US-78, the Stone Mountain Freeway, exit 5 onto Memorial Drive is signed Stone Mountain Village, exit 7 is Hugh Howell Road on the Tucker side, exit 8 is the main entrance to Stone Mountain Park, and the freeway ends at exit 9, West Park Place Boulevard and Rockbridge Road. Memorial Drive (SR-10) also meets East Ponce de Leon Avenue at the city's northwestern edge. Name the exit you used and the first turn after it.

A car at the Kensington or Indian Creek MARTA park-and-ride needs the station and the row. Inside Stone Mountain Park, which lies outside the city limits, give the parking lot you used. At a gated apartment complex, share the entry code or wait at the entrance; in a townhome community, the building and unit number are enough. For a shop, office or warehouse, say which door the work is on and whether it is at the front or the back.