2011 Lexus HS 250h Owners Manual - Page 503

5-2. Steps to take in an emergency n Electric power steering warning light (warning buzzer) The electric power steering warning light comes on and the warning buzzer sounds when the voltage is low or the voltage drops. n If the malfunction indicator lamp comes on while driving First check the following: l Is the fuel tank empty? If it is, fill the fuel tank immediately. l Is the fuel tank cap loose? If it is, tighten it securely. The light will go off after several driving trips. If the light does not go off even after several trips, contact your Lexus dealer as soon as possible. n When the tire pressure warning light comes on Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire pressure warning reset switch will not turn off the tire pressure warning light. n The tire pressure warning light may come on due to natural causes The tire pressure warning light may come on due to natural causes such as natural air leaks and tire inflation pressure changes caused by temperature. In this case, adjusting the tire inflation pressure will turn off the warning light (after a few minutes). n When a tire is replaced with a spare tire 5 The compact spare tire is not equipped with a tire pressure warning valve and transmitter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat tire has been replaced with the spare tire. Replace the spare tire with the repaired tire and adjust the tire inflation pressure. The tire pressure warning light will go off after a few minutes. n If the tire pressure warning system is not functioning When trouble arises The tire pressure warning system will be disabled in the following conditions: (When the condition becomes normal, the system will work properly.) l If tires not equipped with tire pressure warning valves and transmitters are used. l If the ID code on the tire pressure warning valves and transmitters is not regis- tered in the tire pressure warning computer. l If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or higher. 503