What I do here, I do in my own car and at my own risk only, since it's my own car!
If you decide to do something similar and break / damage / burn / dismantle your car, it is your responsibility!
Clearly, then: I am NOT RESPONSIBLE for your losses!
26.10.2018
MK6 Climatic heater controls retrofit!!!!!
Electrics Part 3
Let's see why the servo's motor doesn't work...
Disassembly...
I set up a bench outside: An old green t-shirt on the table, so we see what... falls!
Frappe coffee, a smoke, out in the back yard, nice weather!!!!
The mechanism box opens by umclipping 4-5 tabs, which can remain intact if we are a bit careful!
The motor snaps on the plastic.
I removed the potentiometer too. I read everywhere that this is the usual suspect.
Not here...
I did a little teleconference with Nikos, who was in France, I measured the motor and it looks right... It should work...
The pot's upper side...
Its lower sider.
So, next, we check the motor...
The motor was not turning, not at least when grabbing its shaft and trying to turn it. So, I started bathing the motor with all sorts of liquids: WD-40, Brake Cleaner, Contact Cleaner. Finally, it got unstuck. I felt the shaft unsticking and turning. At first it was hard. Then, it seems the whatever muck is inside the motor melt or wen liquid, so it started turning. Not as freely as a working motor should, however...
I mounted it inside the box, without the top of the box, just to check it. I plugged it but it still doesn't do anything!
At Nikos' advice, I used the volt meter and checked it. Nothing! Derad!
Here, the radio control cars and motorcycles came handy! I have a 1/8th scale RC Bike which uses an electric motor of exactly the same size!
In RC cars and bikes, this is called a brushed motor (with brushes), sized 370. It has the same dimensions as the VW motor and it fits into the box precisely! ven the shaft is the same diameter!
I found two motors: A Robitronic and a Team Losi. Basically while trying to unsolder the plugs from the Losi motor, I accidentally cut one of its terminals, which meant more time trying to fix the motor. Forget it. Let's do the Robirtonic motor!
Testing the Robitronic on the plug, it also does not move, but this time, every time I turn the right knob on the Climatic, I hear a buzzing sound from the motor, which means there's something happening here. I think that the 12V from the car may be too much for this RC motor, which is designed, I think, for 6-7 volts... maybe 9 or similar...
So, I stop here, checking my options:
Find a new servomotor (around 130 euros)
Να βρω νεο μοτέρ (5-7 ευρώ από Ευρώπη)
Find another used servomotor from a local service shop...
I had some lengthy chats with the nice Englishman who originally made the video, and he agreed that it's probably a faulty motor...
So, I will come back at a later date to inform on my progress. For now, I drive the car with the servomotor hanging to the right of the center console... A little embarrassing to my passengers but what can I do?!
Meanwhile, since the cable is still connected to the gear (on its other side!), I adjusted it manually so it brings air to the front and to the windshield...
Update 30.10.2018
Yesterday, I went to Tasos Batas to perform a front brake pads change. (Yes, we mounted Brembos! haha!)
While talking with Tasos, I asked him if he had any used servomotor like "this", so I can use its motor...
He kindly presents me with TWO used servomotors!!!
I disassemble the first one, while we wait for the brake pads to arrive... The motor has exactly the same dimensions as mine!!!
But... it has a metal gear!
Tasos (RC Touring Car Champion!): Let's go upstairs. I have my model stuff up there...
He finds a tiny puller and removes the metal gear!
We mount his motor on my plastic box. The shaft is longer!
A little hack sawing and a bit of dremeling later the motor is ready...
Tasos is the Best!
I mount it into my plastic box, switch the car on, nothing... dead... hmmm...
At home, VCDS, I do Basic Settings, nothing!
Later in the evening I went to my in-laws... At a stop light, with nothing better to do...
...I do a reset on the AC. I move the right knob, still having the servomotor OPEN, laid on the passenger seat and... it WORKS!
So, the next part is to put it in the car.
By the way, I ordered three screws, by their code...
I went by the dealer, but unfortunately, they were not here... So, tomorrow afternoon I will get them and reinstall everything...
why tose screws? Because they have a hex-head and because there is a shortage of space down there, I hope I can get a small wrench to screw them in. I hope to mount at least two of the three... We will see...
Back at home, since the motor I mounted is a bit fatter in the back, it would not fit exactly in the plastic cover.
Here, you can see in the right it's that bit higher!
