Replace key cylinder door - 2001 Ford F250 Super Duty Super Cab

The outside door locks/trunk lock will most likely not work due to the key not being able to be inserted/turned in the lock cylinder due to lack of use. Spray WD40 into door lock cylinder using supplied straw and insert key until it goes all the way in using sawing motion. If lock cylinder still will not turn continue sawing motion with key while holding gentle turning pressure on the key. This will usually free up any sticky/seized lock cylinder wafers and allow the cylinder to turn

There should be 8 cuts total on the key. While the door and the ignition share some of the same cuts you cannot get all the cuts from one cylinder. I believe that the door cylinder only uses 6 cuts and the ignition cylinder uses 7 cuts. The cut closest to the head of the key is #1 and the cut closest to the tip is #8. If I remember correctly the ignition cylinder uses cuts 1 - 7 and the door cylinder uses cuts 3 - 8.If the locksmith cannot decode the ignition cylinder you can try to contact you local ford dealer and see if they can find a key code and cut a key from that otherwise you may have to replace your ignition cylinder.

The ignition switch on Mercury Sable is integrated into the ignition cylinder. When this switch fails, you may need to purchase a special switch from a Ford dealership if the switch used a wireless transponder.


Instructions for NON Functional Cylinder (Cylinder will Not Turn or No Keys ):
1. Disconnect the negative battery cable.
2. Remove the steering wheel.
3. Using locking pliers, twist the cylinder cap until it separates from the lock cylinder.
4. Using a 3/8 in. (10mm) diameter drill bit, drill down the middle of the ignition lock key slot approximately 13/4 in. (44mm) until the lock cylinder releases from its breakaway base. Remove the lock cylinder and drill shavings from the lock cylinder housing.
5. Remove the retainer, washer, ignition switch and actuator. Thoroughly clean all drill shavings and other foreign materials from the casting.
6. Inspect the lock cylinder housing for damage from the removal operation. If the housing is damaged, it must be replaced.

To install:
1. Replace the lock cylinder housing, if damaged.
2. Install the actuator and ignition switch.
3. Install the trim and electrical parts.
4. Install the ignition lock cylinder.
5. Install the steering wheel.
6. Connect the negative battery cable, then check the lock cylinder operation.


Instructions for Functional Cylinder ( Cylinder will Turn with Key):
1. Disconnect the negative battery cable.
2. Turn the lock cylinder key to the RUN position.
3. Using a 1/8 in. (3mm) diameter wire pin or a small drift, depress the lock cylinder retaining pin through the access hole in the upper steering column shroud (under the ignition lock cylinder) while pulling out on the lock cylinder. Remove the lock cylinder from the column.

To install:
1. Install the lock cylinder by turning it to the RUN position and depressing the retaining pin. Insert the lock cylinder into its housing. Make sure the cylinder is fully seated and aligned in the interlocking washer before turning the key to the OFF position. This will permit the cylinder retaining pin to extend into the cylinder housing.
2. Rotate the lock cylinder using the lock cylinder key, to ensure correct mechanical operation in all positions.
3. Connect the negative battery cable.


Door Lock:
When a lock cylinder must be replaced, replace both sides as a set to avoid carrying an extra set of keys.
1. Remove the door trim panel and watershield.
2. Remove the clip attaching the lock cylinder rod to the lock cylinder.
3. Pry the lock cylinder out of the slot in the door.


To install:
1. Work the lock cylinder assembly into the outer door panel.
2. Install the cylinder retainer into the slot and push the retainer onto the lock cylinder.
3. Connect the lock cylinder rod to the lock cylinder and install the clip. Lock and unlock the door to check for proper operation.
4. Install the watershield and door trim panel


Hope this helps.

Open the trunk with the key, it will disable the alarm. You probably need a new door lock cylinder, which you should look into. They're easy to replace, but take a while to get, as they have to be coded for your key. You can also remove the door lock cylinder by loosening the t20 torx screw near the door handle until the lock cylinder slides out(DO NOT LOOSEN MORE THAN NECESSARY TO GET THE LOCK CYLINDER OUT), then use a flathead screwdriver through the hole to activate the lock.

You will have to replace the ignition lock cylinder and it will come with a new ignition key. As for the doors/trunk you will most likely have to hire a locksmith to make you a new one. Or you can replace all of the door lock cylinders as well. See links below.

Ignition Lock Cylinder
Door Lock Cylinder
Trunk Lock Cylinder

if your key worked before but doesn't now your probably looking at a worn out lock cylinder or a worn out key. more than likely its the lock cylinder. you can buy a replacement lock cylinder but it will have to be keyed to match the original key by a locksmith or a knowledgeable parts guy may know how

TRY LOCKING ALL DOORS,THEN UNLOCK PASSENGER SIDE FRONT DOOR WITH KEY..THIS SHOULD DISARM SYSTEM..IF YOU REPLACED DRIVER'S DOOR,THE NEW DOOR MAY NOT HAVE THE KEY CYLINDER SWITCH HOOKED UP OR NOT THERE AT ALL.THERE SHOULD BE A SMALL SWITCH ON BACK OF KEY CYLINDER

Take your current key and the new cylinder to a locksmith. The tunmblers will be replaced with ones that will match your key ridges.

You can try do-it-yourself, but it may not be as "strong" as having a smith do it.:
1. Insert your current key into the new cylinder.
2. File-down the tumblers that are sticking out.
3. File them down to the cylinder.

When you get your old cylinder out, put ypour key in it and you will see what I mean.

Hope this helps!

There is a Pannel SNAP Removal Tool To Get those Stuborn Snaps that Are Holding it on, Lock Cyls. are self Explanitory when you get to them

Your best bet would to be remove the inner door panel, and remove the lock/handle assembly. Take the lock/handle to a professional locksmith; he will replace the internals of the lock to match your existing key. You cannot "buy" a lock cylinder that will match your key; it has to be assembled to match the key that you have.