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The steering wheel in my C220 squeaks when turned. This is coming directly from the steering column. Would a little WD-40 or some other spray product be safe to apply to the steering wheel or is there a possibility of shorting out the electrical in the column?

Response:
1) It’s best to remove the steering wheel and expose the bearing. If it’s a sealed bearing obviously oil isn’t the answer replacement is or live with it. In lite of WD40 I’d use a Lithium Spray Grease.
2) Turn the radio up abit until you can no longer hear the squeak. Or……make a listening stick or tube, stethoscope, and while someone is turning the wheel find the spot that squeaks. Then apply some white lithium grease to the area. Lithium grease does not change viscosity when the temperature changes. I’ve never owned or worked on a Mercedes, but there should be a u-bolt type clamp with a bushing or bearing in it that may be the culprit. This is what holds the steering column to the bottom of the dash.
3) WD-40 wont hurt your wiring a bit, so if you can get to your squeak in the steering column with that, go for it.

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