Lincoln Aviator: Electric Vehicle Information / Engine On Due To

The following conditions help to explain why the engine is on, and what you can do to allow all electric operation.

• Drive Power: The engine is on due to accelerator pedal pressure or speed control activation. Reduce pressure on the accelerator pedal or switch off the speed control to return to full electric mode.
• High Speed: The engine is on because the vehicle speed exceeds the level for full electric operation. Reduce the speed to return to electric operation.
• Heater Setting: The engine is on because of the heater setting. Reduce or switch off the heater setting to return to electric operation.
• Neutral Gear: The engine is on because the vehicle is in neutral (N). Shift out of neutral gear to return to electric operation.
• Engine Cold: The engine is on because it is cold. The vehicle returns to electric operation once the engine is sufficiently warm.
• Battery Charging: The engine is on to charge the high-voltage battery. The vehicle returns to electric operation once the battery is sufficiently charged.
• Low Gear: The engine is on because the vehicle is in low gear. Shift out of low gear to return to electric operation.
• Normal Operation: The engine is on to optimize vehicle operation. The vehicle returns to electric operation when possible.
• Low Use: The engine is on to maintain engine oil quality. The vehicle returns to electric operation when low engine use mode is complete.
• Fuel Maintenance: The engine is on to maintain fuel freshness. The vehicle returns to electric operation when fuel freshness mode is complete.
• Engine Braking Active: The engine is on to provide increased powertrain braking. This can occur when you turn on the grade assist feature, when speed control is on or when driving with your foot off the accelerator pedal. Turning off grade assist or speed control may allow the vehicle to return to electric operation.
• Battery Temperature: The engine is on due to high or low high-voltage battery temperature. This is a normal operating condition. The vehicle returns to electric operation when possible.
• Drive Mode: The engine is on due to the drive mode selection. Select an appropriate drive mode for electric only operation.