2015 Toyota Sienna remote unlock not working

Question

I installed EVO one with T-harness with H-key. The module was programmed to work with OEM key (3 lock start). Everything worked as designed for over a year but lately when the minivan is started using OEM remote, the car does not unlock the doors. When the car is running on the remote start and the unlock key is pressed, the parking lights dim or flickr indicating that the signal is received but the doors stay locked. It used to work fine and no rewiring or other work was performed to the car. Also, one time when remote start cycle was complete the parking lights stayed on even after the car was shut off after completing 10 or 15 minutes remote start cycle.

Answer 1

Sounds like you are having a possible issue with a door switch ?

Go over your install. Ensure all connectors are fully seated and clipped in. And most important, check your ground connection.