key Lexus IS300 2016 Quick Guide / LEXUS 2016 IS200T,IS300,IS350 OWNERS MANUAL QUICK GUIDE (OM53D43U)
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What to do if...
If the electronic key does not operate properly
■Unlocking and locking the doors
Use the mechanical key in order to perform 
the following operations:
Locks all the doors
Closes the windows and moon roof 
(turn and hold)
*
Unlocks all the doors
Turning the key rearward unlocks the 
driver’s door. Turning the key once 
again within 5 seconds unlocks the 
other doors.
Opens the windows and moon roof 
(turn and hold)
*
*
: This setting must be customized at your 
Lexus dealer.
■Unlocking the trunk
Turn the mechanical key clockwise to open.
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What to do if...
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■Starting the engine
Ensure that the shift lever is in P and 
depress the brake pedal.
Touch the Lexus emblem side of the 
electronic key to the engine switch. 
When the electronic key is detected, a 
buzzer sounds and the engine switch 
will turn to IGNITION ON mode.
When the smart access system with 
push-button start is deactivated in cus-
tomization setting, the engine switch 
will turn to ACCESSORY mode.
Firmly depress the brake pedal and 
check that   is shown on the 
multi-information display.
Press the engine switch.
In the event that the engine still cannot be started, contact your Lexus dealer.
If equipped
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If the electronic key battery is depleted, a warning message will be shown on the multi-
information display. Replace the battery with a new one. For instructions on replacing the 
battery, refer to the “OWNER’S MANUAL”. If you need further assistance, contact your 
Lexus dealer.