Rt. Rear Door Window Problem...

[Meaux]

94Q45, 84K...

Month ago Rt. Rear Window started acting sluggish, got worse (slow) and I quit using it...

Next thing I noticed, the door would not lock w/ key or Drs. Door Sw. Manually only... I also notice, the lights would not blink when using key fob lock switch. The other 3 doors would lock...

The up/down switch on the door works with the key "off"... The console switch does nothing w/ car "On" or "Off"... ?

Pull door panel, pull both window guide tracks and clean, remove 1 ripped peice of rubber, re-grease and install. Window glass slides up and down manually fine.

When window glass bolted to the regulator, goes down fine, but up very slow as if binding... Pulled Regulator and will bench test tomorrow... "Looks" fine...

Did the Diagnostic 1 and got 42-43 codes... which is no data a and b... to BCM.

Can the BCM lose 1 door? Can the Module work the window and not the lock or the console switch?

Thanks...

[elwesso]

sounds like you need to replace the LCU... not a terribly common failure item so you could see if someone has a used one

[Magnum PI]

BTW the part number for the local control unit is #25414-67U00

although it could be different for the right rear door, this is the part number for the right front door. I had the same sympton and this part did the trick.

[elwesso]

Yeah the rear door LCU's are completely different than the fronts...