How to Program Car Keys?

Are you having trouble with a blank key not programmed to your car? Just follow these simple steps to program the new key. Most cars use the same programming procedures and are easy even for beginners in the field of car repair. You can program a replacement key when the original is lost. The specific process for programming a replacement car key will differ depending on which type of ignition it is. Diego’s Locksmith can also help you with key fob programming.

Are The Keys Low On Power?

First, check the battery level on both key fobs. If either one shows low power, replace the batteries in both fobs. You may be able to do this at home by unscrewing the back of the fob and replacing the batteries with new ones that are compatible with each other (check your owner's manual). If not, take both fobs to a car dealership where they will be able to replace them for you. The battery should be available at Walmart, Best Buy, or other locations with flat circle batteries.

Check Other Devices for Interference

If you have recently purchased another device that uses radio frequency, such as a garage door opener or security system, this can cause interference with your car key's signal. Try moving these devices away from your car to see if this fixes the problem.

How To Program A Replacement Key When The Original Is Lost

You need to know what make and model of your car the key belongs to before you can program it correctly. You can find this information on an identification sticker inside your glove compartment or under the hood on some models. Once you have this information, enter it into your key fob's programming software or hardware device according to manufacturer specifications provided in its user manual or online support page if available.

If you've lost your car keys, there are several ways to get a replacement. Here's how to program a replacement key when the original is lost.

Before you start programming, make sure that you have all of the following:

The vehicle's original key fob with a working battery and low-voltage transmitter (the part that sends the signal to open the door)

A replacement key (or keys) that matches the original fob

Your vehicle's VIN number (Vehicle Identification Number) can be found on your registration card or by looking at your vehicle identification sticker on the driver's side doorpost near the door hinge.

Ignition Car Key Programming

You will need to have the new blank key with you when programming:

Sit in the driver’s seat and make sure all doors are closed and remain closed.
Insert the key into the ignition and turn it to the "on" (ACC) position but do not start the car (some models may require you to insert and turn the key twice).
After exactly ten minutes and thirty seconds, turn the key to the "off" position.
Wait a few moments, then Repeat #3.
Repeat numbers three and four at least three times. Once done, see if the key will automatically lock and unlock the doors. If this still doesn’t work, try again.

Push Button Car Key Programming

Similar to the previous instructions. Sit in the driver’s seat and make sure all doors are closed.
Take your time and focus. Press the "start" button 15 times with 1-2 seconds between each press. Do not touch anything else throughout this process, especially not the brakes.
After the 15 presses, push the lock button on your electronic key to see if it locks the doors. It should unlock the doors immediately. If it doesn’t work, follow each of the steps again exactly as written and be sure to maintain the timing intervals.

When These Don’t Work…

Thousands of car owners find themselves in this situation every day. The worst part is that the car key battery is typically not replaceable, so there is no way to unlock or start the vehicle. So, what are your options? You can get a replacement key. However, it will most likely come with its own battery already installed, and you will have to program it yourself with your spare key. You can also get our qualified locksmiths at Diego’s Locksmith to make a new key for you, which would be like the original key and would not need reprogramming.

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