Things You'll Need
Can of spray lubricant
As a safety precaution, virtually all self-cleaning ovens have a door locking mechanism that automatically secures the door whenever the cleaning function is activated. Sometimes, they can get gummed up from food or dust particles, and they will no longer lock. When this happens, your oven will not clean anymore until you have restored the lock.
Unplug the appliance. If you cannot do this, then throw the breaker that powers the oven.
Lift the actual oven top (which will be hinged) to expose the burners themselves. Generally there is a bracing rod underneath that will allow you to flip it up and brace the oven top in an open position.
Expose the locking mechanism. At the front of the oven where the locking mechanism sits will be a panel that needs to be removed. With your 4-in-1 screwdriver, select the correct screwdriver bit, and unscrew the screws in a counterclockwise rotation. Remove the screws and the panel. The automatic latching mechanism is directly underneath.
Clean the entire mechanism with your damp rag. Wipe off dirt, gunk and food particles that may have gummed it up.
Check the wiring in the locking mechanism. There will be two wire leads attached to the locking mechanism. Make sure they are firmly attached.
Lubricate the entire unit. Spray your lubricant liberally over the entire mechanism, then use your fingers to wiggle it back and forth to make sure the lube gets into the entire unit.
Test your work. Replace the top panel, and drop the top back into place. Plug in your oven and then turn the dial to 'self clean.' The latch should lock the door shut.