Ignition key won't work in door

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I always use my remote to get in my MarkVIII. Today, I tried the key and found that it doesn't work in the door locks. It works in the trunk, ignition, and glove box but not the doors. It doesn't seem to go in far enough in the door locks and it will not turn either way. I'm sure somebody here knows whats up. Thanks in advance.

Steve
 
RE: Ignition key won't work in door

No, Valet key should work on the doors and ignition only, not the glovebox or trunk.
 
RE: Ignition key won't work in door

You know, i think i have the same problem.

Eventually the key or lock would wear down or freeze up, and just stop working. I had that problem on some old trucks i had.

On my lincoln, when my battery died with the doors locked i vaguely remember having to get in the passenger side because the key wouldn't work in the drivers side. Don't know what's wrong, i'll just try to keep the battery charged up.
 
RE: Ignition key won't work in door

Common, common, common!

Your first sentence answers your question.

If the tumblers are not used for a long time, they seize solid. If you're lucky, you might be able to free them up by forcing WD-40 into them with the red tube and letting them soak. If not, they must be replaced.

We advise all our customers to use the door tumblers at least once a week. We also squirt graphite based lube into them when we do the "lubricate all latches, hinges and mechanisms" portion of scheduled maintenances.

On a fairly regular basis, we see this scenario:
New customer comes in, leaves his vehicle and key but takes his remote.
Car jockey locks vehicle after parking it on service lot.
Technician goes to get it...
Service advisor phones customer: "Sir, we're sending a car jockey to your office to get your remote. We can't get into your vehicle. Or if you prefer, we'll have to SlimJim our way in."

If your trunk tumbler hasn't seized yet, it will soon without some preventative maintenance!
 
RE: Ignition key won't work in door

Thanks for the input. I'll try to 'input' some WD-40 and see what happens. Luckily the trunk still works but I will lube that too. Thanks for the help!
 
RE: Ignition key won't work in door

The WD40 usually will free the lock cylinders up, but a dry graphite based lubricant would be best for long term maintenance. Reminds me to check mine.
 
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