So my tailgate glass stopped opening when I push the button under the wiper. No I haven't got a T3.
Removed the cover over the wiper arm which revealed 2 wires coming through from inside the tailgate and disappearing under some silicon sealer.
Removing the silicon revealed a small PCB which the two wires were soldered onto.
Shorted across the two wires and Bingo! - Glass opens, so the likely suspect is the switch underneath.
To remove the PCB and get at the switch it was necessary to trim off the tops of two black locating pins which were spread over - then the PCB came out.
Unsoldered the two wires and began to investigate in the comfort of the kitchen. The microswitch on the underside of the PCB is actually very easy to open up. I cleaned it up inside and put it back together.
I now find that the switch is working but there is no connection between one set of terminals and the soldered connection for the red wire on the other side. This looks like corrosion, but PCB is made up of copper connections inside the plastic (like a sandwich).
I then resorted to running a new small copper wire soldered directly to the switch terminal through to the other side to where the red wire is soldered. Applied some silicon grease to protect the switch, and then reassembled the PCB onto the car, resoldered the wires and result!
Used small blob of araldite on the locating pins to lock it down and applied silicon sealer over the whole thing to protect it.
About an hour's work, but you do need good eyesight and nimble fingers!
Although the switch on mine was fine, I found this which would be a direct replacement if needed:
http://www.rapidonline.com/sku/Electronic-Components/Switches/Tactile-Switches/Miniature-tactile-switches/71703/78-0620
Removed the cover over the wiper arm which revealed 2 wires coming through from inside the tailgate and disappearing under some silicon sealer.
Removing the silicon revealed a small PCB which the two wires were soldered onto.
Shorted across the two wires and Bingo! - Glass opens, so the likely suspect is the switch underneath.
To remove the PCB and get at the switch it was necessary to trim off the tops of two black locating pins which were spread over - then the PCB came out.
Unsoldered the two wires and began to investigate in the comfort of the kitchen. The microswitch on the underside of the PCB is actually very easy to open up. I cleaned it up inside and put it back together.
I now find that the switch is working but there is no connection between one set of terminals and the soldered connection for the red wire on the other side. This looks like corrosion, but PCB is made up of copper connections inside the plastic (like a sandwich).
I then resorted to running a new small copper wire soldered directly to the switch terminal through to the other side to where the red wire is soldered. Applied some silicon grease to protect the switch, and then reassembled the PCB onto the car, resoldered the wires and result!
Used small blob of araldite on the locating pins to lock it down and applied silicon sealer over the whole thing to protect it.
About an hour's work, but you do need good eyesight and nimble fingers!
Although the switch on mine was fine, I found this which would be a direct replacement if needed:
http://www.rapidonline.com/sku/Electronic-Components/Switches/Tactile-Switches/Miniature-tactile-switches/71703/78-0620
