Why would a 2005 Highlander's doors start automatically locking when the vehicle is in park and turned off?
This sounds like a BCM problem. The Body Control Module controls automatic door locks, etc. Have this diagnosed by a dealership. The BCM may be going out.
will this cause a constant chime when the car is turned off and you are outside the car?
Search Toyota Highlander Questions
Toyota Highlander Experts
Related Models For Sale
Used Cars For Sale