Lexus IS250 2006 Owner's Manual page 382

5-2. Steps to take in an emergency
Starting the engine
For vehicles with an automatic transmission: Put the shift lever in P
STEP 1
and apply the brakes.
For vehicles with a manual transmission: Depress the clutch
pedal.
STEP 2
For vehicles with an automatic transmission: Press the engine
STEP 3
switch within 5 seconds [after the buzzer sounds], keeping the
brake pedal depressed.
For vehicles with a manual transmission: Press the engine switch
within 5 seconds [after the buzzer sounds], keeping the clutch
pedal depressed.
In the event that the engine still cannot be started, contact your Lexus
dealer.
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Hold the electronic key close to
the engine switch (within 0.4 in.
[10 mm]). Make sure that the but-
ton side of the key is facing away
from the engine switch.
An alarm will sound to indicate that
the start function cannot detect the
key with the depleted battery if any
of the doors will be opened and
closed while this operation.