For 1990-2009 cars

The keyless entry system is a supplementary vehicle entry device. Use the keyless entry system in conjunction with a door lock key. Radio frequencies or discharged batteries may disable the system. Keyless entry allows you to operate the following components.

• | The door locks

• | The illuminated entry lamps

The keyless entry system has the following main components:

• | The transmitters

• | The remote control door lock receiver (RCDLR)

When you press a button on a transmitter, the transmitter sends a signal to the RCDLR. The RCDLR performs the appropriate function.

### Unlock All Doors Operation

If the doors are locked, momentarily press the UNLOCK button in order to perform the following functions:

• | Unlock all the doors.

• | Flash the turn signal lamps twice.

• | Disarm the theft deterrent system.

### Lock All Doors

If the doors are unlocked, press the LOCK button in order to perform the following functions:

• | Lock all of the doors.

• | Flash the turn signal lamps once.

• | Chirp the alarm.

• | Arm the theft deterrent system.

### Auto-Locking (Safety Lock)

The remote keyless entry system has an automatic locking feature. If the doors are unlocked with the remote transmitter while the remote control door lock receiver (RCDLR) is armed, the doors are automatically relocked after 30 seconds unless any of the following events occurs:

• | The door is opened.

• | The ignition switch is turned ON.

• | The rear deck lid is opened.

• | The hood is opened.

### Rolling Code

The keyless entry system uses rolling code technology. Rolling code technology prevents anyone from recording the message sent from the transmitter and using the message in order to gain entry to the vehicle. The term "rolling code" refers to the way that the keyless entry system sends and receives the signals. The transmitter sends the signal in a different order each time. The transmitter and the remote control door lock receiver (RCDLR) are synchronized to the appropriate order. If a programmed transmitter sends a signal that is not in the order that the RCDLR expects, then the transmitter is out of synchronization. This occurs after 255 presses of any transmitter button when it is out of range of the vehicle.