2010 Lexus RX 450h User Guide 2 - Page 612

5-2. Steps to take in an emergency Connect the clamp at the other end of the negative cable to a solid, stationary, unpainted metallic point away from the exclusive jump starting terminal and any moving parts, as shown in the illustration. STEP 4 Start the engine of the second vehicle. Increase the engine speed slightly and maintain that level for approximately 5 minutes to recharge the 12-volt battery of your vehicle. STEP 5 Open and close any of the doors of your vehicle with the "POWER" switch off. STEP 6 Maintain the engine speed of the second vehicle and start the hybrid system of your vehicle by turning the "POWER" switch to ON mode. STEP 7 Make sure the "READY" indicator comes on. If the indicator does not comes on, contact your Lexus dealer. STEP 8 Once the hybrid system has started, remove the jumper cables in the exact reverse order from which they were connected. Once the hybrid system starts, have the vehicle inspected at your Lexus dealer as soon as possible. n Starting the hybrid system when the 12-volt battery is discharged The hybrid system cannot be started by push-starting. n To prevent 12-volt battery discharge l Turn off the headlights and the audio system while the hybrid system is off. l Turn off any unnecessary electrical components when the vehicle is running at a low speed for an extended period, such as in heavy traffic. n When the 12-volt battery is removed or discharged l The power back door must be initialized. (→P. 665) l The hybrid system may not start. (→P. 493) 618