For 1990-2009 cars

### Removal Procedure

1. Insert a small coin between the two halves of the transmitter case at the slot provided near the key ring hole.
2. Twist the coin in order to open the case.
3. Open the transmitter case.

Notice: Electrostatic discharge (ESD) can damage many solid-state electrical components. ESD susceptible components may or may not be labeled with the ESD symbol. Handle all electrical components carefully. Use the following precautions in order to avoid ESD damage:

• | Touch a metal ground point in order to remove your body's static charge before servicing any electronic component; especially after sliding across the vehicle seat.

• | Do not touch exposed terminals. Terminals may connect to circuits susceptible the ESD damage.

• | Do not allow tools to contact exposed terminals when servicing connectors.

• | Do not remove components from their protective packaging until required to do so.

• | Avoid the following actions unless required by the diagnostic procedure:

- | Jumpering or grounding of the components or connectors.

- | Connecting test equipment probes to components or connectors. Connect the ground lead first when using test probes.

• | Ground the protective packaging of any component before opening. Do not rest solid-state components on metal workbenches, or on top of TVs, radios, or other electrical devices.

4. Remove the battery.

### Installation Procedure

1. Install the battery with the positive (+) side down.

Use one 3-volt, type CR2032 battery, or the equivalent.

2. Ensure that the seal is in position.
3. Align the two halves of the case together and squeeze the case closed until the tabs are fully seated.