Join Date: Oct 2003
Location: Coronado, CA
Bronco Info: 96 Bronco XL 5.0 E4OD, Man Xfer/Hubs
My much- better-half told me that she couldn't turn the tailgate key either way, but was able to lower & raise glass with cab switch. I went out and sprayed powdered graphite into the cylinder and on the key, but couldn't turn key.
Kept inserting graphite, but no go.
Ford recommends"Penetrating Lubricant E8AZ-19A501-B or equivalent commercial product is used to eliminate sticking or binding of all key lock cylinders."
I sprayed some PB Blaster in, let it sit for an hour, but no difference.
If recall correctly , the cylinder has a weep hole on underside. May need to pull cylinder and inspect entire cylinder/switch mechanism.
The cylinder cost is $39.95 @ NPD. OUCH!