Q: How to maintenance the hinge,lock and latch on Mercury Mariner?
A: After every 3000 miles or three months, the hinges and latch assemblies of the doors, bonnet and boot (boot) need to be lubricated with a few drops of light oil or lock lubricant. For the latch strikers, they must also contain a little grease in order to prevent wear and tear and also provide smooth movements. The door locks as well as trunk (or liftgate likewise) can be sprayed with graphite lubricant to ease movement.