My NC had a faulty driver door locking mechanism, I can only lock/unlock the drivers door using the key. I can use the remote for the passengers door and boot but the drivers door isn’t responsive.
This morning I replaced the actuator with a used one and no luck, the button on the inside of the drivers door works to lock both sides but the key still won’t lock/unlock the drivers door.
Note: when I bought the car, they key fob was dead, so I replaced the battery with a new one just over a month ago.
I’ve checked the 20A fuse which is fine. What else could be causing this, what can I investigate before I buy a new actuator.
I know this might be a complete red herring but I had a similar situation on my Yaris last week. The remote would lock the doors, but not unlock them. Operation using the switches inside the doors was unaffected. Tried changing batteries with fresh ones in both remotes but no change. The Toyota forums suggest ensuring that the battery is fully charged. I eventually left it connected to my smart charger overnight and that actually cured it. It appears that the Toyota receiver is very sensitive to battery voltage.
It’s worth a try anyway.
Sorry, I was referring to leaving the car’s 12 volt battery on for a good overnight charge. Replacing the fob batteries didn’t have any effect for me apart from confirming that the old fob ones were in generally good shape. However, swapping a fob battery with a completely fresh one at least gets rid of another unknown.
The actuators are renowned to failing. So let’s not rule out the replacement being faulty. Inside the car, or with the window down, when you press the clicker, is there any movement (even the slightest) on the internal handle. ? When mine have failed, the handle would just move a tiny bit. Further more, if you now have 2 actuators, maybe consider replacing the motor in the one you took out. A replacement actuator is about £120. The motor, about £10