2010 Lexus IS 250 Owners Manual - Page 167
2010 Lexus IS 250 Manual
Page 167 highlights
1-4. Opening and closing the windows and retractable hardtop ● If an obstruction is detected in area or when the switch is operated A buzzer will sound twice and a message will be shown in the multiinformation display. Retractable hardtop operation will not activate. If the switch is released and then operated again within 2 seconds, the buzzer will sound again and a message will be shown in the multi-information display to alert the driver. If the switch is held up or down for 3 seconds, retractable hardtop operation will start normally. If an obstruction is detected in area or while the trunk lid is operating, a buzzer will sound twice and a message will be shown in the multiinformation display. Retractable hardtop operation will be suspended for safety reasons. Ensure that no obstructions are near the vehicle and then operate the switch again.