Question about 2003 Ford Expedition
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Posted on Jan 02, 2017
This could be a combination of electrical issues, although i feel that the timing is coincidence in this case. When the combination is elec. windows, wipers, and dome lights this is indicative of the GEM module located behind your radio. The GEM (generic electronic module) is an electronic body control module that regulates electrical flow through a number of accessories.
These factory module boards are notorious for acting quirky by failing to ground intermittently until failing completely. I would be cautious in replacing ignition switches, locks, etc. as the issue can be also compounded by corrosion of the main battery ground wire in the engine compartment and which can cause frying of your under dash wiring into the main wiring harness which can get expensive (i speak from experience having had the exact same syptoms). My issues were that these symptoms occurred only in full ON. When in key BACK ACC mode, they disappeared.
New price for one of these modules is around $280-$300 and easily replaced.
Posted on May 21, 2009
without looking at this that is what it sounds like, or their may just be a bad connection.... maybe unplug the ecu and check the connection for corrosion and crud between plug and unit...
Posted on Mar 22, 2010
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