2007 Lexus GS 350 Owners Manual - Page 52

If the electronic key battery becomes discharged 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 Entering and Exiting Before Driving When Driving n Starting the engine Depress the brake pedal. Hold the electronic key close to the engine switch (within 0.4 in. [10 mm]), making sure that the button side of the key is facing toward you. Press the engine switch within 5 seconds after the buzzer sounds, keeping the brake pedal depressed. Rain and Night Driving Driving Comfort Opening and Closing What to do if ...Customizing Your Lexus 52 For instructions on replacing the electronic key battery, refer to the Owner's Manual. If you need further assistance, contact your Lexus dealer.