2005 Camry LE power locks will not lock when the weather warms up (none of them will lock). If I manually lock all the doors, they unlock by themselves while driving or maybe it is when moving into park so when I park I have to turn off the car and manually lock all. Once locked, there is no issue unlocking them, but if want them locked I have to manually lock all them again.
As soon as the temperature turns cooler to about 65 F, or maybe less, everything works like when new (remote locks all doors fine or main door locks fine too)

Here in TX, it usually warm enough to cause the problem.

Obviously, some relay is stuck either close or open. And the temperature affects electrical current.

Any thoughts?

 

Components in this models door lock systems ECU/fuse/relay box can burn out. There are several threads on this at this site and others. The solution is to replace the part which costs around $800.

Ebay has a listing for a bypass that doesn't required replacing the part. Search on Camry door lock bypass.

The relays are solid state not mechanical.

If temp issues it may be a bad electrical connection. Search the internet for 2005 Camry door lock ECU to find the location of the door lock ECU. When temps are below 65F warm the ECU area to determine if it fails.