Car Keys, Key Fobs and Vehicle Lockouts in Houston
Locked out of your car, down to one key, or holding a fob the car ignores? We cut car keys, program transponder key fobs and get you back into a locked car.
Keys Locked Inside the Car
If a child or a pet is shut inside, call 911 first. A closed car in Houston heat turns dangerous fast.
Otherwise, a lockout visit generally runs like this:
- Proof first. Photo ID at the start, then the registration once the door is open, since it usually sits in the glove box.
- A careful opening. A soft inflatable wedge eases the top of the door out a fraction, and a long-reach tool presses the unlock button. Slim jims stay out of it, because modern doors hide airbag wiring right where they would slide.
- Keys in the trunk. Once the cabin is open, a trunk release or a fold-down rear seat often reaches them.
- No key at all. If the key is lost rather than locked in, the visit turns into making a new one.
A home lockout works much the same way, with proof of address in place of the registration.
Cut Keys, Chip Keys and Smart Fobs
A cut key works like a house key: the cuts on the blade line up the wafers in the door and ignition locks. Older cars use edge-cut blades. Many newer ones use laser-cut keys, also called sidewinder keys, with a wavy groove milled down a thick blade. Either kind can often be cut from the key code tied to the car’s VIN when there’s no key to copy.
A transponder chip sits in the head of most modern car keys. When you turn the key or press start, the immobilizer sends a signal, the chip answers with its code, and the engine runs only if that code matches one the car has learned.
A remote fob locks and unlocks by radio, and a smart key for push-button start carries the chip too. Fobs are programmed, not cut, though most hide an emergency blade. Programming usually means plugging a tool into the diagnostic port under the dash, and some cars also need a security code or dealer-level access.
Spare Keys, Kiosk Copies and Replacement Fobs
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Is it worth making a spare car key before I lose my only one?
Yes. Adding a key while one still works is the simpler job: the blade is cut to match and the chip cloned or programmed while the car still recognizes a key. Once the last key is gone, a new one has to be cut from the code and programmed from scratch, and some cars then need the dealer.
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Will a key copied at a hardware store start my car?
It may open the doors and still leave the engine dead. Most modern car keys carry a transponder chip, and the immobilizer won’t let the engine run unless it recognizes that chip. A working copy needs the chip cloned or programmed too. Some kiosks can clone certain chips, while many copy only the metal.
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My key fob stopped working. Does it need programming?
Try a new battery first. Most fobs take a coin battery with its type printed on it, and a weak one often explains buttons that quit or only work up close. If a fresh battery doesn’t help, the fob may have lost its programming or cracked inside from a fall, and it can be reprogrammed or replaced.
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Can I buy a key fob online and have it programmed?
Sometimes. The fob has to match your car’s frequency, chip and part number, and online listings can get one wrong. A used fob may also be locked to its first car and refuse to learn a new one. Check the part number on your original fob and ask whether the new one will program to your car before you order.
Lost Keys, Worn Keys and Push-Button Starts
Whether a key can be made outside the dealer, and how, depends on the vehicle and the key.
| Situation | What the job involves | What to have ready |
|---|---|---|
| Spare key, one working key on hand | A blank cut to match, then its chip cloned or programmed | The working key and the car |
| Every key lost | A key cut from the code, then programmed to the car | VIN, registration or title, photo ID |
| Smart key lost, push-button start | A new smart key programmed, its emergency blade cut for the door | VIN, registration, photo ID, any smart keys left |
| Engine won’t start, security light flashing | A check that the car still reads the chip, then reprogramming or a new key | Your second key, if you have one |
| Worn key that sticks in the door | A new key cut to factory depths from the code, not copied from the worn one | The VIN and the worn key |
Some newer models, often luxury and European ones, can only get keys through the dealer. On some cars, adding a key also wipes the ones the car already knows, so bring every key you want to keep using.
Why Proof of Ownership Comes First
A working car key is as good as the car itself: anyone who can cut and program one can drive the vehicle away. So a locksmith asks for proof that it’s yours before opening a door or making a key, usually photo ID with a name that matches the registration or title. If the car is in someone else’s name, such as a parent, an employer or a leasing company, bring paperwork showing you may have a key made.
Have Ready for a Vehicle Visit
- Make, model and year
- The VIN
- Registration or title
- Photo ID
- Any remaining keys and fobs
The VIN is the 17-character number at the base of the windshield on the driver’s side. It’s also on the door jamb sticker, the registration and the insurance card.
Lost the whole key ring? If the house key went too, a rekey of your home’s locks means it stops working there.