There is no set period recommended by Toyota for body lubrication. However, it is a good idea to lubricate the following body points at least once a year, especially in the fall before cold weather.
Apply graphite lubricant sparingly thought the key slot. Insert the key and operate the lock several times to be sure that the lubricant is worked into the lock cylinder.
Spray a silicone lubricant or apply white lithium grease on the hinge pivot points to eliminate any binding conditions. Open and close the door several times to be sure that the lubricant is evenly and thoroughly distributed. When applying grease, the use of a small acid brush is very helpful in getting the grease to those hard to reach areas.