2008 Lexus GS 450h Owners Manual - Page 139

2-1. Driving procedures n When the electronic key battery is discharged →P. 454 n Conditions affecting operation →P. 39 n Leak detection pump Several hours after the hybrid system is turned off, you may hear a sound coming from underneath the luggage compartment for several minutes. This is normal operation and does not indicate a malfunction. 2 CAUTION n When starting the hybrid system When driving Always start the hybrid system while sitting in the driver's seat. Do not press the accelerator pedal while starting the hybrid system under any circumstances. Doing so may cause an accident resulting in death or serious injury. n Stopping the hybrid system in an emergency If you want to stop the hybrid system in an emergency while driving the vehicle, push and hold the "POWER" switch for more than 3 seconds. However, do not touch the "POWER" switch while driving except in an emergency. If the hybrid system stops while the vehicle is being driven, this could lead to an unexpected accident. NOTICE n To prevent 12 volt battery discharge Do not leave the "POWER" switch in ACCESSORY or ON mode for long periods without the hybrid system on. n When starting the hybrid system l Do not race the hybrid system. l If the hybrid system becomes difficult to start or stalls frequently, have the hybrid system checked immediately. 141 GS_HV_U March 29, 2010 3:31 pm