Lexus 2014 LX570 Owner's Manual page 870

5-2. Steps to take in an emergency
Starting the engine
Shift the shift lever to "P" and apply the brakes.
STEP 1
STEP 2
Press the "ENGINE START STOP" switch within 10 seconds
STEP 3
after the buzzer sounds, keeping the brake pedal depressed.
In the event that the "ENGINE START STOP" switch still cannot be oper-
ated, contact your Lexus dealer.
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LX570_OM_OM60L21U_(U)
Touch the Lexus emblem side of
the electronic key (including the
card key) to the "ENGINE START
STOP" switch.
An alarm will sound to indicate that
the start function cannot detect the
electronic key that is touched to
the "ENGINE START STOP"
switch if any of the doors is opened
and closed while the key is touched
to the switch.