What You're Replacing and Why It Matters

The ignition lock cylinder is the part of your steering column that accepts your key and turns to start the engine. In a 2000 Jeep Wrangler, this cylinder can wear out, stick, or fail to turn smoothly—sometimes the key won't turn at all, or it turns but nothing happens. Replacing it means removing the old cylinder from the steering column and installing a new one in its place.

This is a job you can do yourself with basic hand tools if you're comfortable working inside the steering column. It takes about an hour. If you're not confident removing the steering column cover or working with the electrical connectors, a mechanic can do it in under two hours of labor.

Key Takeaways

  • You will need to remove the steering column covers, disconnect the electrical connector, and unbolt the ignition cylinder from inside the column.
  • A replacement cylinder for a 2000 Jeep Wrangler costs between $40 and $120 depending on whether you buy OEM (original equipment) or aftermarket parts.
  • The job requires only a screwdriver, a socket set, and pliers—no specialized tools—and takes about one hour.
  • You must turn the key to the "On" position before you can remove the old cylinder, so test your key before you start.
  • If your key is stuck or broken, you may need a locksmith to extract it first, which adds cost and time.

Tools and Parts You'll Need

Gather these items before you start. You'll need a Phillips head screwdriver, a flathead screwdriver, a socket set (typically 7mm, 8mm, and 10mm sockets), pliers, and a replacement ignition lock cylinder designed for a 2000 Jeep Wrangler. Some cylinders come with new keys; others require you to use your existing key or have a locksmith cut a new one to match.

Buy the cylinder before you remove the old one. Check whether it comes with a wiring harness connector already attached. If not, you'll transfer the connector from your old cylinder to the new one. Have a small container nearby to hold the bolts and screws you remove—they're straightforward to lose.

Disconnect the Battery and Remove the Steering Column Covers

Start by disconnecting the negative terminal of your battery. This prevents accidental electrical shorts while you work. Use a socket wrench to loosen the nut on the negative cable and slide it off the post.

Next, remove the two Phillips screws that hold the lower steering column cover in place. These are on the underside of the column, below the steering wheel. Pull the cover down and away from the column. Then remove the upper cover by unbolting it from the sides—usually two bolts, one on each side. Set both covers aside in a safe place.

You should now see the ignition cylinder mounted on the right side of the steering column. It's a cylindrical part about the size of a quarter, with a slot for your key.

Remove the Electrical Connector and Retaining Bolt

Look behind the ignition cylinder for a wiring harness connector. This is a plastic plug with wires running to it. Press the small tab on the connector and pull it straight out. Set it aside—you'll connect it to the new cylinder.

Now locate the retaining bolt that holds the cylinder in the column. It's a single bolt, usually 8mm or 10mm, mounted on the back or side of the cylinder. Use your socket wrench to remove it. Keep this bolt; you'll use it again with the new cylinder.

Turn the Key to "On" and Extract the Old Cylinder

Insert your key into the old cylinder and turn it to the "On" position—the same position you use to power the dashboard lights without starting the engine. This releases an internal locking pin that holds the cylinder in place. If your key is stuck or broken, stop here and call a locksmith; trying to force it can damage the steering column.

With the key in the "On" position, pull the cylinder straight out of the column. It should slide out smoothly. If it resists, wiggle it gently side to side while pulling. Once it's out, you can remove the key.

Install the New Cylinder and Reconnect Everything

Before you insert the new cylinder, make sure it comes with the wiring harness connector attached. If it doesn't, carefully remove the connector from the old cylinder (usually held by a small clip or tab) and attach it to the new one.

Insert the new cylinder into the column opening. It should slide in smoothly and align with the bolt hole. Reinstall the retaining bolt and tighten it with your socket wrench—snug but not over-tight, as the cylinder is plastic and can crack. Reconnect the wiring harness by pushing the connector straight in until you hear or feel it click.

Test the new cylinder by inserting your key and turning it through all positions: "Off," "On," and "Start." The key should turn smoothly and the steering wheel should lock when you turn the key to "Off." If the key is hard to turn or doesn't move through all positions, remove the cylinder and check that the connector is fully seated.

Reassemble the Steering Column and Reconnect the Battery

Reinstall the upper steering column cover by bolting it back to the sides of the column. Then snap the lower cover back into place and find it with the two Phillips screws. Make sure both covers sit flush against the column with no gaps.

Reconnect the negative battery terminal by sliding the cable back onto the post and tightening the nut with your socket wrench. Turn the key to "On" to verify that the dashboard lights come on and the ignition responds. Start the engine to confirm everything works.

Frequently Asked Questions

Can I replace the ignition cylinder without removing the steering column?

Yes. The cylinder is accessible from inside the column without removing the entire column from the vehicle. You only need to remove the column covers, which takes about 10 minutes. Removing the whole column is unnecessary and takes much longer.

What if my key is stuck in the old cylinder?

Do not force it. A stuck key usually means the cylinder is damaged or the locking pin is jammed. Call a locksmith to extract the key safely. Forcing it can break the key inside the cylinder or damage the steering column, making the repair more expensive.

Do I need to reprogram the new cylinder or get new keys?

No reprogramming is needed. A 2000 Jeep Wrangler ignition cylinder is mechanical, not electronic. Your existing key will work with the new cylinder as long as it's the correct key for your vehicle. If you want a spare key cut to match, any locksmith can do that from your existing key.

How much does a replacement cylinder cost?

Aftermarket cylinders run $40 to $80. OEM Jeep cylinders cost $80 to $120. Labor at a shop typically adds $100 to $200 depending on your location and the shop's hourly rate. Doing it yourself saves the labor cost.

What if the new cylinder doesn't fit or the key won't turn?

Make sure you ordered a cylinder for a 2000 Jeep Wrangler, not a different year or model—fitment varies. If the key won't turn, the cylinder may be installed backward or the connector may not be fully seated. Remove it, check the orientation, and reinstall. If the problem persists, the cylinder may be defective and should be exchanged.