Lock Cylinders - Trunk DIY repair Free

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Old May 3, 2025
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Lock Cylinders - Trunk DIY repair Free

This fix is specifically for the Trunk, but the instructions on the wafers applies to ignitions and doors as well...
You need a 10mm socket, couple flathead screwdrivers, some sandpaper, lubricant, and some pliers or 7 inch vice grips. Also helps to have small picking/punching tools about 2-3mm diameter to push out stuck wafers.


Remove the 10mm bolt with a socket, pry out the ring clip remove the latch mechanism. Rotate the key cylinder counter clockwise 45 degrees and it pulls out.

*get into a safe controlled location so you don't lose parts, next steps..

Remove the chrome cylinder cap, use pliers or vice grips to lightly pinch and turn off..

remove the retaining cap..

now, carefully punch down the tumbler wafers with a small tool as you remove the cylinder.

after the tumbler cylinders out, carefully remove the wafers and watchout for small springs. do this in a small controlled location. try to do it individually and once you finish one set tape them in place move to the next set, continue.... Now once you get them all working again after sanding them and removing hard corners, install and see if it works.. You'll likely have to remove some wafers all together or sand the tops down because key wear ect. I removed 3 of mine, no big deal. I've also fixed the ignition wafers, had that issue too. Remember to give them a healthy spray of lubricant, a light one like wd40 before installing back in the car. If I have to do this again I'll make a video.
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