If the engine will not start even though correct starting procedures are being followed , Consider each of the following points:
The engine will not start even though the starter motor operates normally.
One of the following may be the cause of the problem:
Refuel the vehicle.
Try to restart the engine again following correct starting procedures.
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 starter motor does not turn over (vehicles with a smart key system)
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.
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:
Contact your toyota dealer if the problem cannot be repaired, or if repair procedures are unknown.
Emergency start function (vehicles with a smart key system)
When the engine does not start, the following steps can be used as an interim measure to start the engine if the engine switch is functioning normally:
Even if the engine can be started using the above steps, the system may be malfunctioning. Have the vehicle inspected by your toyota dealer.
Overhaul
1. DRAIN ENGINE OIL
2. REMOVE SPARK PLUG
3. REMOVE VENTILATION VALVE SUB-ASSY
4. REMOVE OIL FILLER CAP SUB-ASSY
5. REMOVE OIL FILLER CAP GASKET
6. REMOVE CYLINDER HEAD COVER SUB-ASSY
(a) Remove the 2 engine wire harness clamps.
(b) Remove the 3 nuts and disconnect the engine wire harness. ...