2002 4Runner Key Fob Programming: A Simple Guide

Lost your key fob or need to program a new one for your 2002 Toyota 4Runner? Don’t worry, programming your key fob at home is easier than you might think and can save you a trip to the dealership. This guide provides clear, step-by-step instructions to get your keyless entry working again in no time.

Programming Your 2002 4Runner Key Fob: A Step-by-Step Guide

Before you begin, ensure you have all necessary remotes at hand, including any existing ones that are currently programmed to your vehicle. This process will program all remotes you present during the sequence, so you’ll want to include every fob you intend to use.

Here’s how to program your 2002 Toyota 4Runner key fob:

Step 1: Initial Conditions

Get comfortable in the driver’s seat of your 2002 4Runner and make sure of the following:

• The key is removed from the ignition.
• The driver’s side door is open, and all other doors are closed.
• The driver’s door is unlocked. It doesn’t matter if other doors are locked or unlocked.

Step 2: Key Insertion

Insert your key into the ignition, and then immediately pull it back out. Do not turn the key on, just insert and remove.

Step 3: Lock Cycling Sequence (Part 1)

Within 40 seconds of removing the key, perform the following actions:

1. Cycle the power door locks five times using the power lock switch on the driver’s door panel. Aim for a consistent, relatively fast pace for these cycles.
2. After cycling the locks, close and then open the driver’s side door.

Step 4: Lock Cycling Sequence (Part 2) and Ignition Cycles

Again, within 40 seconds of the previous step, complete these actions:

1. Cycle the power door locks five more times, just as you did in Step 3.
2. Turn the ignition key to the “ON” position, and then immediately back to the “OFF” position.
3. Repeat the previous step one more time: Turn the ignition to “ON” and then back to “OFF”.
4. Remove the key completely from the ignition.

Step 5: Programming Mode Confirmation

Within 3 seconds after removing the key in Step 4, the power door locks should automatically cycle (lock then unlock). This automatic cycling indicates that your 4Runner has successfully entered programming mode. If the locks do not cycle, return to Step 1 and repeat the process carefully.

Step 6: Transmitter Programming

This step needs to be done within 40 seconds of entering programming mode:

1. Take the key fob you wish to program and press and hold both the LOCK and UNLOCK buttons simultaneously for about 1 second.
2. Immediately after releasing both buttons, press and hold only the LOCK button for 2 seconds.
3. Within 3 seconds of this action, the door locks should cycle once (LOCK then UNLOCK). This single cycle confirms that the remote has been successfully programmed. If you hear two lock cycles or no cycle at all, repeat steps 6a and 6b for that specific remote, as it may not have been accepted.
4. Repeat steps 6a and 6b for every additional key fob you need to program, including any existing remotes you want to continue using. It’s crucial to reprogram all remotes at once during this procedure.

Step 7: Final Step

Close the driver’s side door. This action should conclude the programming sequence. Test all programmed key fobs to ensure they are working correctly with your 2002 Toyota 4Runner’s keyless entry system.

By following these steps, you should be able to easily program your 2002 4Runner key fob and regain the convenience of keyless entry. If you encounter issues, double-check each step and ensure you are within the time limits specified.