2000 LX470 door lock/unlock buttons not working (1 Viewer)

[SpeedbumpDC]

First time post but definitely not new to the IH8MUD forums. I have learned a lot from many of you here and have fixed a number of issues on my 2000 LX470. I appreciate all who take the time to share, teach and comment.

One issue I have yet to resolve though is that it appears my door lock/unlock buttons don't appear to work in the vehicle. I am hoping for suggestions or what I may need to hunt down and replace.

Here are more details:

• Actuators appear to work fine.
• Doors can be locked and unlocked without issue from the keyfob.
• I've tried both the drivers side buttons and the passenger side buttons - neither work.
• I get no response from the door buttons (no sound, no clicks, nothing)
• I've checked the door lock fuses and they appear fine.

Am I looking at bad contacts on the switches or some sort of failing module?

I searched the forums and didn't find anything that matched my symptoms. Most people mention actual actuator problems but as mentioned, my doors unlock/lock fine from the keyfob.

Thanks!

 

[suprarx7nut]

I would investigate the driver's switch. It's common for the wiring to run through a common "master" switch at the driver's door. If the wrong wire in that harness has a failure, you could lose all interior locking ability. I've run into that with window switches, but the same could apply for door locks.

If the key fob works, I assume the actuators and control ECU are in working order.

 

[SpeedbumpDC]

Thanks for the response and suggestion Supra. That makes sense and I'll do some digging into the door switch wiring and check for issues.