5-2. Steps to take in an emergency
If the engine will not start even though correct starting procedures are
being followed (P. 156), consider each of the following points.
The engine will not start even when the starter motor operates
normally.
One of the following may be the cause of the problem.
There may not be sufficient fuel in the vehicle’s tank.
IS250: Refuel the vehicle.
IS220d and IS200d: P. 531
The engine may be flooded. (IS250)
Try to restart the engine once more following correct start-
ing procedures. (P. 156)
There may be a malfunction in the engine immobilizer sys-
tem.
(P. 96)
The starter motor turns over slowly, the interior lights and
headlights are dim, or the horn does not sound or sounds at a
low volume.
One of the following may be the cause of the problem.
The battery may be discharged. (P. 524)
The battery terminal connections may be loose or corroded.
The starter motor does not turn over, the interior lights and
headlights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
One or both of the battery terminals may be disconnected.
The battery may be discharged. (P. 524)
There may be a malfunction in the steering lock system.
Contact any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional, if the problem can-
