Power locks in a vehicle are a convenience most become accustomed to without thinking about them. However, over time these actuators can become stuck, mainly from grime and old lubricant becoming sticky. Equally, moisture can cause an otherwise functional actuator from moving the metal pinion controlling the lock as it should. Fortunately, the remedy is easy in most cases and probably in your garage.
Remove the panel of the door containing the problem lock, using the appropriate screwdrivers. Consult a copy of the vehicle's schematic to discover the location of the screws that require removal, if necessary.
Gently loosen the plastic weather shield covering the internals of the door. Remove the plastic and set it aside, taking care to not get the gummy surround adhesive on yourself or the vehicle's upholstery.
Grab the rod heading into the actuator. The actuator is a white or black plastic housing with the rod connecting to the lock. While locking and unlocking the door from the key fob or door switch, move the rod to assist it.
Keep the rod in its unlocked position after a few cycles. Spray a generous amount of silicone lubricant into the actuator and over the rod. Allow the lubricant to penetrate the actuator and rod for 10 to 15 minutes. Lubricants like this displace moisture and loosen contamination.
Insert the tip of the oil applicator into the end of the actuator. Pump two or three drops into the end of the actuator. Let this stand for a few minutes to allow penetration.
Lock and unlock the door a few times to ensure proper coverage of the applied lubricants. Return the panel and trim, after you are satisfied with the operation of the lock and actuator.
