2010 Toyota 4Runner Owners Manual - Page 68

1-2. Opening, closing and locking the doors ● The lock sensor may not work properly if it comes into contact with ice, snow, mud, etc. Clean the lock sensor and attempt to operate it again, or use the lock sensor on the lower part of the door handle. ● Fingernails may scrape against the door during operation of the door handle. Be careful not to injure fingernails or damage the surface of the door.