1999 Landcruiser Master Window Switch (3 Viewers)

Joined
Jun 20, 2021
Messages
10
Location
Santa Monica
Hello all, I've been a lurker for awhile now and I'm having issues with my master window switch. The existing one had issues with the physical button on the switch so I decided to order a replacement from the Switch Doctor at switchdoctor dot net and after installing the replacement I'm still having issues.

With the new switch installed, the window rolls down but not up. It's totally unresponsive when I command the window closed. However, all of the other buttons works just fine. I had to reinstall the old master window switch to get the window back up. I contacted the Switch Doctor and they sent me a replacement 2 days later and I am still having the same issue.

Has anyone experienced a similar thing? I'm assuming that this window switch from the Switch Doctor is incompatible with my year LC.

Thanks!

Dan
 
Joined
Jun 20, 2004
Messages
2,319
Location
Round Rock, TX
Could it be a bad wire where the harness from behind the door card meets the harness at the door hinges? I've had issues on previous trucks where the switch was fine but wires had been damaged enough to work intermittently. Worth checking. Could also be the window actuator that's headed south. Had that happen in our 2003 100 years ago.
 
Joined
Jun 20, 2021
Messages
10
Location
Santa Monica
Could it be a bad wire where the harness from behind the door card meets the harness at the door hinges? I've had issues on previous trucks where the switch was fine but wires had been damaged enough to work intermittently. Worth checking. Could also be the window actuator that's headed south. Had that happen in our 2003 100 years ago.
Yeah it's possible it's a wire thing but it just doesn't make sense that both new master window switches didn't function in the same way and as soon as I install the original unit, it works!
 

flintknapper

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Joined
May 22, 2004
Messages
10,525
Location
Deep East Texas
Yeah it's possible it's a wire thing but it just doesn't make sense that both new master window switches didn't function in the same way and as soon as I install the original unit, it works!

It's wiring or a physical/mechanical problem with the window regulator. My bet would be wiring, very common issue where the harness exits the door jamb. OEM switch probably just has better contacts than the Switch Doctor and 'barely' allows enough more electrical current to operate the window. Check your wiring.
 
Joined
Sep 24, 2021
Messages
1
Location
Anchorage, AK
I've been diagnosing a similar problem. 2007LX. Motor sounded like it was dying and switch was screaming when button pushed. Had a replacement switch and motor to try out and cleaned and greased regulator.

No improvement.

Pulled out the multimeter, found 12v entering (blue wire?) and leaving (green/yellow wires?) the switch, but only 8.5v at the connector to the motor.

Going to splice a line between the harnesses before I track down a new female connector to the motor's harness.

Might try to diagnose why my power mirror controls have no power when I go back in there.
 
Joined
Apr 11, 2006
Messages
138
Location
Sacramento, CA
Hello all, I've been a lurker for awhile now and I'm having issues with my master window switch. The existing one had issues with the physical button on the switch so I decided to order a replacement from the Switch Doctor at switchdoctor dot net and after installing the replacement I'm still having issues.

With the new switch installed, the window rolls down but not up. It's totally unresponsive when I command the window closed. However, all of the other buttons works just fine. I had to reinstall the old master window switch to get the window back up. I contacted the Switch Doctor and they sent me a replacement 2 days later and I am still having the same issue.

Has anyone experienced a similar thing? I'm assuming that this window switch from the Switch Doctor is incompatible with my year LC.

Thanks!

Dan
Yep. Same thing here.
It would appear our bargain-basket switch replacement isn't exactly a direct replacement.
But at the price, I'll go along with holding my finger on the "up" for a longer than I used to.
I do miss it tho...
 

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