2011 Lexus HS 250h Owners Manual - Page 149

2-1. Driving procedures n Auto power off function If the vehicle is left in ACCESSORY or ON mode (the hybrid system is not operating) for more than an hour with the shift position in P, the "POWER" switch will automatically turn off. However, this function cannot entirely prevent the 12-volt battery from discharging. Do not leave the vehicle with the "POWER" switch in ACCESSORY or ON mode for long periods of time when the hybrid system is not operating. n Sounds and vibrations specific to a hybrid vehicle →P. 26 n Electronic key battery depletion 2 When driving →P. 53 n When the ambient temperature is low, such as during winter driving conditions It may take time until the "READY" indicator to come on. n Conditions affecting operation →P. 50 n Notes for the entry function →P. 51 n If the hybrid system does not start The immobilizer system may not have been deactivated. (→P. 98) n When the "POWER" switch indicator flashes in amber The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer immediately. n If the "READY" indicator does not come on If the "READY" indicator does not come on when you press the "POWER" switch with the shift position in P and the brake pedal depressed, contact your Lexus dealer immediately. n If the hybrid system is malfunctioning →P. 507 n If the electronic key battery is depleted →P. 459 149