2009 Lexus GS 350 Owners Manual - Page 54

Entering and Exiting If the electronic key does not operate properly n Unlocking and locking the doors To unlock or lock the vehicle, use the mechanical key. The mechanical key is stored inside the electronic key. 1 Unlocks 2 Locks Before Driving When Driving n Starting the engine Card key* Depress the brake pedal. Touch the Lexus emblem side of the electronic key to the "ENGINE START STOP" switch. Press the "ENGINE START STOP" switch within 10 seconds after the buzzer sounds, keeping the brake pedal depressed *: If equipped. Rain and Night Driving Driving Comfort Opening and Closing What to do if ...Customizing Your Lexus 60 If the electronic key battery becomes depleted, replace it with a new battery. For instructions on replacing the battery, refer to the Owner's Manual. If you need further assistance, contact your Lexus dealer.