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I have seen hundreds of threads online talking about what to use when your door locks freeze. Some say blast it with WD-40 others say graphite. The list goes on. However, I don’t think my problem is my lock cylinder and blasting any sort of oil might be a waste. Over the last few weeks I have gone out and tried to open my car, both with the remote keyless entry and the key. For the keyless entry I get a sound but it the door does not unlock. With the key I get about a 1/2 turn and the lock stops. The other way it would go complete.
I was planning on opening my door panel sometime but I wondered what to oil it with and what component is more likely causing this problem. Car is a 2000 Honda Civic Ex. It’s been over two days since it rained.
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When you open the door panel check the arm that the actuator
lifts is free. if its rusty or sticky you may need a little
penetrating oil to free it. Otherwise some silicone spray.Well, the thing is quite complex actually.
1. I think all of them are using 2 different metals in door locks. One for lock housing and different one for lock core. That unfortunately creates a galvanic couple with galvanic currents, resulting in continuous oxidization and byproducts of this build up. Basically, they slowly but steadily seize themselves.
2. Water is always dripping down into the door itself. That’s why they have drain provisions in the bottom. Those do get plugged quite fast and then you have a nice puddle and high humidity level inside the door. Cold – you have frost build up on damp parts.
You may have combination of both. But either way, it’s door trim removal – buy manual, no big deal – and actual manual release of seizing parts.
Big difference between spraying something via key hole and having thing actually taken apart. In the last case, use thick grease with PTFE. Even black brake grease will do. I work professionally with silicone spray and find them to be pretty useless as lubricant. Stinkers they are for sure. Solvent used.
For the key core itself, I use ATF. Yep. But it needs to be reapplied every so many weeks, as it drips off the moving parts. They also sell de-icer sprays for key locks, which is basically methanol under pressure.
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