2010 Lexus IS 250 Owners Manual - Page 582

5-2. Steps to take in an emergency Emergency start function When the engine does not start, the following steps can be used as an interim measure to start the engine if the "ENGINE START STOP" switch is functioning normally. Vehicles with an automatic transmission STEP 1 Set the parking brake. STEP 2 Put the shift lever in P. STEP 3 Set the "ENGINE START STOP" switch to ACCESSORY mode. STEP 4 Press and hold the "ENGINE START STOP" switch about 15 seconds while depressing the brake pedal firmly. Vehicles with a manual transmission STEP 1 Set the parking brake. STEP 2 Put the shift lever in N. STEP 3 Set the "ENGINE START STOP" switch to the ACCESSORY mode. STEP 4 Push and hold the "ENGINE START STOP" switch about 15 seconds while depressing the brake pedal and clutch pedal firmly. Even if the engine can be started using the above steps, the system may be malfunctioning. Have the vehicle checked by your Lexus dealer. 504