SYS light
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Instructor
Joined: Mar 2012
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From: Kennewick WA
SYS light
Battery went dead so I jumped the car, being careful to ground to the engine and not the battery. Once started I checked voltage which varied from 13.7 to 14.0. Noticed SYS light flashing. Waited about a half hour until voltometer gauge dropped and then stopped engine and attempted to restart. It only clicked.
Battery is new but I hadn't started it in awhile. Opinions?
Battery is new but I hadn't started it in awhile. Opinions?
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Joined: Mar 2015
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Fully charge the battery with a charger. Can do damage the way your doing it. Make sure connections are good and clean. If the battery froze when dead might be gone.
Last edited by antfarmer2; Mar 24, 2016 at 06:56 PM.
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The alternator will not fully charge a dead battery. You highly run the risk of damaging the car's electronics not to mention the alternator.
Last edited by jts90vette; Mar 24, 2016 at 07:06 PM.
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A flashing SYS light indicates an electrical issue.
And the number one cause is a discharged battery.
