Open 24/7Mon–Sun, 24/7Serving Los Angeles County from Lakewood
SoCal 24/7 Locksmith logo

Car Key Replacement

Transponder keys, fobs & smart keys · Cut and programmed

Car keys made

Lost the only key? A new one can be cut and programmed.

  • Transponder keys and fobs
  • Ownership verified first
  • Price confirmed before cutting
Locksmith programming a new transponder car key with a diagnostic tool

Car key replacement is no longer just cutting metal. Most modern cars use a transponder chip in the key head that talks to the immobilizer, and a key that isn't programmed to it will turn the ignition without starting the engine. We cut and program replacement keys, key fobs and push-to-start smart keys for drivers across Los Angeles County.

If you're locked out as well, the car locksmith side of the job comes first: getting into the vehicle. Spare house keys can be handled during the same visit through key duplication.

Need a car key made?

Have the make, model, year and VIN ready. The VIN is on the dashboard at the base of the windshield.

(562) 534-1992

Car key and fob services

What the job involves depends on the key your car uses. These are the requests that come up most:

Transponder key replacement

A new key cut to your lock and its chip programmed to the immobilizer.

Key fob programming

Remote lock and unlock buttons paired with the car, for a new fob or a replacement.

Smart key replacement

Proximity keys for push-to-start cars, programmed so the car recognizes them.

All keys lost

No working key at all. A key is made from the lock or key code data, then programmed.

Car key types

01

Plain metal keys

Older cars without a chip. Cut to match the lock and ready to use.

02

Transponder keys

A chip in the head sends a code to the immobilizer. Cutting alone isn't enough; the chip has to be programmed too.

03

Remote head keys and fobs

Blade and remote buttons in one housing, or a separate fob that handles the locks and alarm.

04

Smart keys

They stay in your pocket. The car detects them for keyless entry and push-button start.

When you need a replacement car key

Call about a new key if:

  • You're down to one keyA spare made from a working key is far simpler than starting from scratch later.
  • Your only key is goneA new key has to be made and programmed before the car will start.
  • The engine won't start with your keyThe chip may be damaged, or the key has lost its programming.
  • Fob buttons stopped workingTry a new battery first. If that fails, the fob may need reprogramming or replacing.
  • The blade is cracked or wornWorn cuts can snap off in the ignition or stop turning the lock.

Safety first. Before a new car key is cut or programmed, the tech needs to see your ID and proof of ownership such as the registration or title. Keys can't be made for a car you don't own, even a relative's, without the owner's consent.

Why drivers come to us for keys

Fobs and smart keys

Remote fobs and push-to-start keys programmed to the car, not only metal blades.

Ownership checked

Registration or title and a matching photo ID are verified before any key is made.

Quoted per vehicle

Pricing depends on the key type, so the tech confirms it for your make and model before cutting.

Work done at the car

Keys are cut and programmed where the car is parked in Los Angeles County.

★★★★★Save on locksmith service

Current offers

Mention an offer when you call. One offer per visit.

Sample offers pending owner approval. Offers can't be combined. Ask the locksmith for details.

FAQs

Car Key Replacement FAQs

What information do I need for a car key replacement?

The make, model and year, the VIN, and proof that the car is yours, such as the registration or title along with a photo ID. If you still have an old key, even a damaged one, keep it handy; it can make cutting the new key simpler.

What is a transponder key?

A transponder key has a small chip in its head. When you turn the ignition, the car's immobilizer reads a code from that chip, and if the code doesn't match, the engine won't run. So a copied blade without a programmed chip may unlock the door but won't start the car.

Can you program a key fob I bought online?

Sometimes. Aftermarket and used fobs have to match the car's frequency and part number, and some used fobs can't be reprogrammed to a different vehicle. Send us the part number before you order, and we can tell you whether it's likely to work with your car.

I lost all my car keys. Can a new one be made?

In most cases, yes. The tech makes a key from the door lock or from key code information, then programs it to the immobilizer. You'll need proof of ownership on hand. Once the car is running again, have a second key made so you're never back in this spot.

Why did my car stop recognizing my key?

Common causes include a dead fob battery, a transponder chip damaged by a drop or a trip through the washer, worn key cuts, or lost programming after battery work on the car. Try the spare if you have one. If the spare works, the problem is in the first key, not the car.

Is a smart key the same as a key fob?

Not quite. A standard fob locks and unlocks the doors with buttons, and you still insert a key to start. A smart key, also called a proximity key, lets the car sense it nearby, so you unlock by touching the handle and start the engine with a button.

SoCal 24/7 Locksmith locksmith job

Areas we serve

Choose your city.

The shop is in Lakewood, and the locksmith works in the cities around it every week. Pick your city, or call and say where you are.

16 listed service areas. marks a shop location. Call to confirm availability for your address.

Our shop

Locked out right now?

Call (562) 534-1992. A locksmith answers 24 hours a day.

Call now Free quote