Frequently Asked Questions
The ten questions we get asked most often, answered straight.
Can I program a key fob myself without going to the dealer?
For most vehicles built between 2000 and roughly 2014, yes. The whole procedure usually takes under ten minutes using only your existing working key. Find your vehicle on this site for the exact steps. Newer vehicles with encrypted immobilizers usually require an OBD-II programmer or a professional locksmith.
Do I need a working original key to program a new one?
For owner-side programming, almost always. The existing key is what tells the vehicle to enter Programming Mode in the first place. If you have lost every key, you will need to call an automotive locksmith or have the vehicle towed to a dealer.
How much does it cost to have a locksmith program a key?
Independent automotive locksmiths usually charge $80 to $250 to program a single fob, service call included. Dealerships typically charge $100 to $400 for the same labor, plus the cost of the OEM key blank.
Why is my new fob not working after I followed the procedure?
The most common cause is a depleted battery in the new fob. Aftermarket fobs often ship with batteries that have been sitting on a warehouse shelf for years. Drop in a fresh coin cell and try again. The second most common cause is an FCC ID mismatch between your original and the replacement.
Will programming a new fob erase my old fobs?
Usually not. Most procedures simply add the new fob to an empty memory slot. A handful of vehicles do clear all previously programmed fobs when entering Programming Mode, and the page for your specific vehicle will flag that if it applies. To be safe, have every existing fob within reach during the session.
Can I program a fob from a different model year?
Almost never. Manufacturers change immobilizer modules across model years, and a fob designed for a different year will usually do nothing. Verify the FCC ID on the replacement matches your original exactly, including any letter suffixes.
Does programming a key void my warranty?
No. Programming a remote fob is an owner-accessible operation that writes one ID number into the immobilizer's memory. It does not touch the engine, transmission, or drivetrain, and it cannot void a factory warranty.
How many keys can my vehicle have programmed at once?
Usually four to eight, depending on the vehicle. The exact limit lives in your owner's manual under Security or Anti-Theft. Once you hit the limit, programming a new fob requires erasing all existing fobs and re-programming them in a single session.
Can I program an aftermarket key fob, or do I need OEM?
Either works, as long as the FCC ID and frequency match. OEM blanks tend to be more reliable and have longer battery life. Aftermarket blanks are cheaper and fine for backup or spare use. For your everyday driver, OEM is usually worth the small premium.
What if the procedure does not work after several attempts?
Stop. Repeated failed programming attempts can put some immobilizers into a security timeout that requires dealer-level intervention to clear. After three failed tries, double-check the FCC ID match, swap the fob battery, and if it still won't take, call a professional automotive locksmith.