1999 Lexus LS 400 Owners Manual - Page 227

THEFT DETERRENT If any door is unlocked and the ignition key is not in the ignition switch during the alarm sounding, its door is automatically locked. To stop the alarm: Use either of the following methods. D Unlock the door or trunk using an ignition key or wireless remote control. D Turn the ignition switch on. your Lexus dealer. NOTICE Disconnecting the battery may result in the erasure of information you have set in the computer memory. After reconnecting the battery, check that the memorized data has been retained. If it has been erased, input it into the computer once more. Testing the system 1. Open all the windows. 2. Set the system as described above. The front doors should be locked with the ignition key or wireless remote control. Be sure to wait until the indicator light starts flashing. 3. Unlock one of the doors from the inside. The system should activate the alarm. 4. Unlock any of the doors with a key or the wireless remote control to cancel the system. 5. Repeat this operation for the other doors and hood. When testing the hood, also check that the system is activated when the battery terminal is disconnected and then reconnected. If the system does not work properly, have it checked by 211