I had an intermittent issue with the driver side back door. Started after a trip to the snow, probably temperature related. Thought it was the FOB as the lights would not flash when I pushed the FOB’s button to lock/unlock the LC. Turned out to be the actuator. Sprayed some silicon on the locking mechanism and cycled the locks a dozen times. Haven’t had any issues since.
The actuator is a common problem with Toyotas, and I thought is was only my ford that had these issues lol. Tundras and Camrys see this on the regular. If you spend any time on the tundra boards you’d swear you landed on a Domestic Truck Forum, I was shocked to read the issues that are far too common with the 2nd gen.
I bought a 4 pack of the actuator motors on amazon that I’ll swap in if needed. There is also a eBay seller that has rebuilt OEM actuators for around $60. I Found them through a thread on here when I was researching this issue.