Battery CablesĮxamine your Equinox’s battery posts where they attach to the battery. Other causes include a trunk/tailgate release switch that is always on, a headlight switch stuck in the “on” position, aftermarket accessories such as an alarm system or CD changer, damaged wiring harnesses, and faulty relays. A faulty door switch (that turns the dome light on and off) frequently causes a parasitic power drain. If it’s higher than that, then something is drawing current, and it must be addressed.īefore connecting a multimeter to the battery, verify that the dome light is shutting off when you close the doors. The draw should be less than 25 milliamps (0.025 amps). Remove the negative cable from your Equinox’s battery and use a multimeter to measure the draw. To fix this issue, you’ll need to test for a parasitic power draw. Parasitic Power DrawĪ parasitic power draw is when something is drawing current from your Chevy Equinox’s battery after you turn the vehicle off, like an interior light or a malfunctioning component. If your vehicle is running fine when you park it, and it won’t start, there is an issue with the charging system (alternator, battery, or battery cables) or a parasitic power draw. ![]() Chevy Equinox: Battery Draining While Parked Causes The two primary causes for a battery to deplete are parasitic power loss or a faulty battery. If the battery drains while driving, there’s likely an issue with your vehicle’s alternator. ![]() If it is draining while your Equinox isn’t running, something is drawing current that shouldn’t be. If your Chevy Equinox’s battery is draining, it’s something that’ll need addressing right away.
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