Batter Light On, Ford Explorer

Could be your alternator. Typically the battery light goes on only where there is a failure in the charging system. The batter has no built in feature to trigger a light fault. Go by any sears, autozone, parts supplier and they can test your charging system. It does not cost anything and give you an answer in 2 minutes. Also, if your car is putting out less than 13 volts while running you have a charging issue. That will drain the battery.

Did you replace this part? http://www.autopartswarehouse.com/sku/Motorcraft/Voltage_Regulator/MIGR817.html

get a12 volt test light (autozone or any part store) . disconnect negative battery. connect light between negative terrminal of batteryand negitive cable if light lights something is useing battery power remove bulbs lighting hood and trunk until test light does not light disconect anything electrical until the test light goes out. if you disconnect alternater and it goes out replace alternator. if this was helpful please leave good feed back

im not quite sure exactly what it is, tho i can tell you it is not the alternator, if i were you i would start by changing the fuel filter, that being parly pluged alone can kick the check engine light on and cause the vehicle to die at idle.. hope this helps, its definately the cheapest way to start.

check brake light bulbs for fault/washer check water level in bottle/alternator faulty

You probably have a problem with the charging system. The alternator is a likely cause.

Yep. Sounds like you have a bad alternator.

might have a bad o2 sensor wich is tripping your check engine light and a vacuum leak wich is causing your 4lo 4 high light to blink

well; on your car, the alternator has an internal regulator. have you checked any wires or harnesses that ran off the battery? And see if you may have a cut place on your cables, or if one has come loose from the ground.

Are you sure the alternator isnt "over" charging? if not, you may have a "loose" connection somewhere with the cables, or a malfunction in the dash cluster. Also, are you positive the battery is forsure good?