I have an '03 Exp that runs OK and fires right up with a charged battery. However, when I turn it off and after it sits for a few days, the battery is dead. I don't see any lights that have been left on. Any ideas on what is causing the drain?
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Could be a whole bunch of things causing a draw. Use a meter to figure out what circuit is alive. Could very well be your under hood light. I'm thinking in three days from a charged to dead battery is a light. Electrical stuff can be a pia. Just be methodical.I have an '03 Exp that runs OK and fires right up with a charged battery. However, when I turn it off and after it sits for a few days, the battery is dead. I don't see any lights that have been left on. Any ideas on what is causing the drain?
Good point!VOLTAGE DROP TEST. If you have a bad battery connection, sometime it lets the big surge to start thru but won't take a charge because of the bad connection.
You can test battery wires and connections with a voltage drop test.