Chevrolet Cobalt Owners Manual: Electric Power Management

Chevrolet Cobalt Owners Manual / Instrument Panel / Electric Power Management

This vehicle has Electric Power Management (EPM), an advanced control system. It estimates the battery's temperature and state of charge and then adjusts the voltage for best performance and extended life of the battery.

When the battery's state of charge is low, the voltage is raised slightly to quickly put the charge back in.

When the state of charge is high, the voltage is lowered slightly to prevent overcharging. If the vehicle has a voltmeter gauge or voltage display on the Driver Information Center (DIC), you may see the voltage move up or down. This is normal. If there is a problem, an alert will be displayed.

The battery can be discharged at idle if the electrical loads are very high. This is true for all vehicles. This is because the generator (alternator) may not be spinning fast enough at idle to produce all the power that is needed for very high electrical loads.

A high electrical load occurs when several of the following loads are on: headlamps, high beams, fog lamps, rear window defogger, climate control fan at high speed, heated seats, engine cooling fans, trailer loads, and loads plugged into accessory power outlets.

EPM works to prevent excessive discharge of the battery. It does this by balancing the generator's output and the vehicle's electrical needs. It can increase engine idle speed to generate more power, whenever needed. It can temporarily reduce the power demands of some accessories.

Normally, these actions occur in steps or levels, without being noticeable. In rare cases at the highest levels of corrective action, this action may be noticeable to the driver.

    Mirror Reading Lamps
    The vehicle may have reading lamps on the rearview mirror. Press the button near each lamp to turn the reading lamps on and off. ...

    Battery Run-Down Protection
    The vehicle has a battery saver feature designed to protect the vehicle's battery. When any interior lamp is left on and the ignition is turned off, the battery rundown protection system automatic ...

    See also:

    Chevrolet Cobalt Service & Repair Manual. Cobalt & G5
    Recommended Service Service Interval BODY Inspect Lamps, Seat Belt & Warning Devices At Least Once Every 6 Months Lubricate Hinges, Latches, Lock Cylinders & Strikers A ...

    Chevrolet Cobalt Owners Manual

    Chevrolet Cobalt Service Manual


    Copyright © 2024 www.cheviguide.com - Chevrolet Auto Manuals - 0.0034