If The Engine Will Not Start - Toyota Yaris 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 proce-
dures are being followed (P. 182, 185), consider each of the fol-
lowing points:
The engine will not start even though 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.
Gasoline engine: Refuel the vehicle.
Diesel engine: P. 462
 The engine may be flooded. (gasoline engine)
Try to restart the engine again following correct starting procedures.
(P. 182, 185)
 There may be a malfunction in the engine immobilizer system.
(P. 74)
The starter motor turns over slowly, the interior lights and head-
lights 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. 453)
 The battery terminal connections may be loose or corroded.
The starter motor does not turn over (vehicles with a smart entry
& start system).
The engine starting system may be malfunctioning due to an electrical
problem such as an open circuit or a blown fuse. However, an interim
measure is available to start the engine. (P. 449)