Ford Explorer: Battery, Mounting and Cables / Description and Operation - Battery and Cables - System Operation and Component Description

Ford Explorer 2020-2021 Service Manual / Electrical / Battery and Charging System / Battery, Mounting and Cables / Description and Operation - Battery and Cables - System Operation and Component Description

System Operation

Gasoline Vehicles

The main battery, which is located in the engine compartment, is a 12 volt DC source connected in a negative ground system and is a voltage stabilizer for the 12 volt electrical system.

A BMS is attached to the negative side of the battery cable and a generator current sensor (if equipped) is attached to the positive side of the battery cable. For description of these components,
Refer to: Charging System - System Operation and Component Description (414-00 Charging System - General Information, Description and Operation).

Hybrid Vehicles

Hybrid vehicles utilize the main engine compartment battery and an additional 8Ah auxiliary battery. Just like the gasoline vehicles, the main engine compartment battery has a BMS that is attached to the negative side of the battery cable. The auxiliary battery provides support for transient electrical loads that occur during a crank event when the main engine compartment battery is isolated from the rest of the vehicle and unable to provide transient support. The auxiliary battery transient support is only needed if the DC/DC 12 volt output is at or near full capacity (220A). The auxiliary battery is located in the rear compartment, on the LH side of the vehicle. An auxiliary battery isolator, which is located above the main engine compartment battery, uses a LIN to supply diagnostics to the PCM. The auxiliary battery isolator receives a PWM signal from the PCM commanding the auxiliary battery isolator to open and close. During a cranking event the PCM request the auxiliary battery isolator to open, disconnecting the cranking main engine compartment battery, starter, and starter generator from the 12 volt bus. The rest of the vehicle's electrical architecture does not detect the low-voltage transient caused by engine cranking. A battery current sensor is attached to the auxiliary battery negative battery cable. For description of these components,
Refer to: Charging System - System Operation and Component Description (414-00 Charging System - General Information, Description and Operation).

All Vehicles

Ford Motor Company strongly recommends that all faulty batteries be returned to an authorized recycling facility for disposal.

    Description and Operation - Battery and Cables - Overview

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    Diagnosis and Testing - Battery

    General Equipment Diagnostic Battery Charger Use Ford approved battery test equipment. Midtronics MDX-650 or P-300/P-600/490/1050 Midtronics GRX-3590 or 3000 Diagno..

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    Ford Explorer 2020-2021 Service Manual: Description and Operation - Information and Entertainment System - Component Location


    NOTE: The available speaker configurations are shown first. The remaining hidden audio and SYNC system components and various cable routings follow the speaker configurations. NOTE: Some vehicles may not be equipped with all the optional components shown...

    Ford Explorer 2020-2021 Owners Manual: Floor Mats


    WARNING: Use a floor mat designed to fit the footwell of your vehicle that does not obstruct the pedal area. Failure to follow this instruction could result in the loss of control of your vehicle, personal injury or death. WARNING: Pedals that cannot move freely can cause loss of vehicle control and increase the risk of serious personal injury...

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    WARNING: Position the seatbelt height adjuster so that the seatbelt rests across the middle of your shoulder. Failure to adjust the seatbelt correctly could reduce its effectiveness and increase the risk of injury in a crash.

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