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ISG system operation

Prerequisite for activation

ISG system operates in the following situations.

  • The driver's seatbelt is fastened

  • The driver's door and hood are closed

  • The brake vacuum pressure is adequate

  • The battery sensor is activated and the battery is sufficiently charged

  • Outside temperature is not too low or too high

  • The vehicle is driven over a constant speed and stops

  • The climate control system satisfies the conditions

  • The vehicle is sufficiently warmed up

  • ISG related parts are working properly

  • The incline is gradual

  • The steering wheel is turned less than 180 degrees and then the vehicle stops

ISG system is not activated, when the prerequisites to activate the ISG system are unsatisfied.

Auto stop

When ISG is on the engine will be stopped automatically when both of the following occurs:

  1. Vehicle speed decreases to 0 km/h (0 mph) full stop condition.

  2. Brake pedal is depressed and gear is in D (Drive) or N (Neutral).

The Auto Stop () indicator illuminates in green on the instrument cluster, when the engine stops.

Idle stop cannot reoccur again until the vehicle speed goes above 5 km/h (3 mph) and then returns again to the automatic stop conditions as previously mentioned.

In the Auto Stop mode, if the engine hood is opened, ISG system will be deactivated.

When the system is deactivated, the ISG off button indicator will illuminate and a message 'Auto Stop error. Shift to P or N to start engine manually' appears on the Cluster display with a warning sound.

If this occurs, depress the brake pedal and restart the engine manually.

Auto start

When the engine stops automatically by ISG, the engine will restart if one of the following is done.

  • Release the brake pedal.

  • When Auto Hold is activated, take your foot off the brake pedal and then depress the accelerator pedal.

  • While depressing the brake pedal, shift the gear from N (Neutral) or D (Drive) to R (Reverse) or P (Park).

  • While depressing the brake pedal, shift the gear from N (Neutral) to D (Drive).

Cluster display messages

The messages are displayed on the instrument cluster to help use ISG system.

Type A

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Type B

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Auto Stop is Off. Shift to P or N and start engine manually / Auto Stop is Off. Shift to P or N to start engine manually

When the system is deactivated, the ISG off button indicator will illuminate and a message will appear on the Cluster display with a warning sound in the following situations.

  • When the engine hood is opened.

  • When ISG system is not working normally.

If this occurs, depress the brake pedal and restart the engine manually. For your safety, restart the vehicle in the P (Park) position.

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AUTO STOP elapsed time

AUTO STOP display shows the elapsed time of engine stop by the Idle Stop and Go system.

You may check AUTO STOP elapsed time in the Utility view on the instrument cluster.

Refer to "Cluster display modes" section in chapter 4.