Hi 524support. Welcome to the forum. Start with a jump start to get the engine running, then use a cheap digital voltmeter to measure the voltage between the two battery terminals. After a few minutes, it must be between 13.75 and 14.75 volts. If it stays around 12 volts, the charging system is not recharging the battery while you're driving. If the voltage is ok, the battery may have a shorted cell, something may have been left on to drain it, or the cables could be loose or corroded.
With the engine stopped, the battery voltage should be near 12.6 volts. If it is around 11 volts or less, have it recharged and tested. If you have an electric radiator fan, it is run by a computer. Computers do weird things when the battery voltage is too low.
Caradiodoc
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Friday, July 2nd, 2010 AT 11:29 AM