For 1990-2009 cars

### Removal Procedure

1. Insert a dime between the 2 halves of the transmitter case. A slot is provided for this purpose, near the key ring (6) hole.
2. Twist the dime in order to open the case.
3. Remove the battery.

### Installation Procedure

Important: Install the battery with the positive (+) side down.

1. Install the new 3-volt CR2032 battery (2) or equivalent.
2. Ensure that the seal of the case is properly positioned.
3. Align the 2 halves of the case.
4. Close the case.
5. Verify that the transmitter operates properly.

If the transmitter does not operate properly, you may need to resynchronize the transmitter. Refer to Transmitter Synchronization .