If The Engine Will Not Start - Lexus IS250 U Owner's Manual

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8-2. Steps to take in an emergency

If the engine will not start

If the engine will not start even though correct starting procedures are being
followed (P. 159), consider each of the following points:
The engine will not start even though the starter motor operates nor-
mally.
One of the following may be the cause of the problem:
There may not be sufficient fuel in the vehicle' s tank.
●
Refuel the vehicle.
The engine may be flooded.
●
Try to restart the engine again following correct starting procedures.
(P. 159)
There may be a malfunction in the engine immobilizer system. (P. 69)
●
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 terminal connections may be loose or corroded.
●
The battery may be discharged. (P. 502)
●
The starter motor does not turn over
The engine starting system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However, an interim
measure is available to start the engine. (P. 497)
IS350/250_U (OM53C50U)