Toyota 4Runner: If the engine will not start

If the engine will not start even though correct starting procedures are being followed (, 173), consider each of the following points:

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.

• There may be a malfunction in the engine immobilizer system.

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.

• The battery terminal connections may be loose or corroded.

The starter motor does not turn over.

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.

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.

• There may be a malfunction in the steering lock system. (vehicles with a smart key system)

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 START STOP” switch is functioning normally:

Set the parking brake.

Shift the shift lever to P.

Turn the “ENGINE START STOP”
switch to ACCESSORY mode.

Press and hold the “ENGINE START
STOP” switch for about 15 seconds while depressing the brake pedal firmly.

Even if the engine can be started using the above steps, the system may be malfunctioning. Have the vehicle inspected by your Toyota dealer.

• If the shift lever cannot be shifted from P
• If you lose your keys
• If you cannot operate back door opener
• If the electronic key does not operate properly (vehicles with a smart key system)
• If the vehicle battery is discharged
• If your vehicle overheats
• If the vehicle becomes stuck
• If your vehicle has to be stopped in an emergency