How to Replace the Battery in a Car Alarm Remote

Most car alarm remotes have small, coin-style batteries inside of them. Each remote also contains a small circuit board that includes a transmitter antenna. These remotes are generally made from two separate plastic pieces, sandwiched together to form one unit. A small relief cutout designed to aid in separating these pieces is normally located on the edge of the remote. This area allows the remote to be pried apart with a coin or flathead screwdriver.

Things You'll Need

• Coin
• Flathead screwdriver
• Replacement battery

Instructions

1. Remove the keys and key ring from the car alarm remote.

2. Locate the relief cutout. It is generally located along the edge of the remote, on the opposite end of the key ring hole.

3. Insert a coin or flathead screwdriver into the relief cutout and pry the remote apart, splitting it into two separate halves. Remove the battery from the half containing the circuit board.

4. Install the new battery and press both pieces of the remote back together, snapping them in place. Test the remote to ensure that it operates properly.

References

• "Haynes Techbook: OBD-II and Electronic Engine Management Systems"; John Haynes and Mike Stubblefield; 2003