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Hi, I’m a long time member and first time poster, as the last Polo we had was pretty reliable. My wife recently ‘upgraded’ to a Polo 1.4 SE 2006 9N3. It’s a 5 door auto with electric windows in the front and these do not work. The guy we purchased it from said it’s probably a fuse, but tbh we were a bit too trusting and found other issues with the car which were concealed… Guess I’ll clock that up to experience. I’ve done the following to try and diagnose the issue:- · Listen for motor clicking or any signs of life (none found) · Test the o/s switch (worked in a colleagues car to control o/s & n/s windows fine) · O/S motor, removed the motor and control unit and powered the motor pins directly with a power probe (motor turns and works fine) · Inspected loom in o/s door boot (no obvious broken wires, all looks good) · The window switches on both sides light up, which I assume is a good sign. · Ran OBDII diagnostics – all clear · Bought VAG COM and ran VCDS diagnostics, only fault is with heater recirculating flap, but nothing on windows or CCM. This is where I have a few questions. Looking at the coding for the comfort control (module 46), mine was set to 00018. ------------------------------------------------------------------------------- Address 46: Central Conv. Labels: 6Q0-959-433.lbl Part No: 6Q0 959 433 E Component: 65 Komfortger·t 0002 Coding: 00018 Shop #: WSC 00788 VCID: 3D774FAF37F37CF6B0B-4A3A No fault code found. ------------------------------------------------------------------------------- Ross-Tech shows this module’s coding as: +00001 = Selective Locking inactive +00002 = 4-Doors +00016 = Central Locking installed (from MY 2008) +00016 = Central Locking without Power Windows installed (through MY 2007) +00064 = Central Locking with 2 Power Windows installed (through MY 2007) +00256 = Central Locking with 4 Power Windows installed (through MY 2007) Notes: As of MY 2008 the Door Control Modules are now connected via LIN which results in different codings. The Coding is the Sum of the individual Options. Which to me suggests that it is 16 + 2, i.e. central locking without power windows. I changed the code to 00066, which is what I’d guess it should be as a 4 door with 2 power windows, but this had no effect, although it hasn’t produced an error either. I’ve not been able to find a wiring diagram for the 9N3, so I have a few questions:- 1. Can anybody point me in the right direction to a workshop manual and wiring diagram? 2. I’m used to simple window motors and this Polo has multiple connections to the motor and what appears to be an integrated control unit, what do all these wires do and which ones should be tested? 3. Does the driver’s door module control both sides? 4. How can I test this module? 5. Are there any VCDS tests for windows? (I'm new to VCDS and learning my way around it, any tips appreciated) So far, I’ve been unable to narrow the fault down and believe it could be one of the following: a. Faulty drivers door control module b. Faulty modules on both door (seems unlikely) c. Faulty switch (again unlikely, as I’ve tested this in another car) d. Faulty wiring e. Faulty comfort control module f. Car hates me I don’t want to start buying parts and randomly changing bits without really understanding what the fault is; so any guidance you can provide to fault find and point me in the right direction would be much appreciated.