Question about 2001 Ford Expedition
Hi.this is being caused by a faulty ignition switch the Accessory or auxiliary circuit is not shutting down, via ignition circuit breaker. this will occur in defective switch from time to time. simply replacing this ignition switch will fix your issue.
When you turn your ignition switch all the way off, it is designed to kill all auxiliary power once this motion is initiated. if the switch mechanism is faulty, the circuit is unable to control the current, in return, allowing the current to stay closed. this is mechanism failure at the most and, the switch should be replaced.
If you wish, i will post a battery drain test below so you can pin point the exact location where the circuit is closed when the switch is in the off position. If the current pull is located on numerous devices, this will confirm my diagnosis.
BATT DRAIN TEST--
Here is the procedure I use to isolate a battery drain. Remove negative battery cable from the battery. Using a 12-volt test light, hook one end to the negative battery post the other end to the negative battery cable you just disconnected. The test light will glow or "light" if there is a drain. If the "light or glow" is faint, that is probably normal draw for the clock or computer. If the "light or glow" is bright, then there is a large drain. That should be corrected. Now start removing and replacing the fuses one by one until the light goes out; that one will be the circuit with the drain. Remember to hold in the button in the door jam for the interior lights.
Posted on Jul 30, 2009
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Posted on Jan 02, 2017
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