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Something like vcds, can read trouble code and view live data for the convertible top and window regulators, etc.


Investing in yiur own vw scan tool; will save you in the long run, the better tools like bcds is $199, while the obdeleven is $69 and on amazon, some basic “vag” code readers are even as low as $20.
 

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Seeing, how the functional ”problem” window is just on one side; I would assume, that is the cause or source, of your problem.

When the windows stop working, the most common failure, is the window regulator breaks on these cars; VW sells a repair kit and you could save allot of $, by repairing, installing installing the kit yourself.

www.parts.vw.com


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I haven’t personally used that scan tool but it does seem to support vw’s, have some advanced features. Because most of these are Chinese knockoffs; you don’t really know; how well or if they work, are your particular VW, until you try it.

Note: at that $65 price range; you are at the same price for OBDEleven, which is more popular, widely used, which isn’t exactly perfect either. It is a more modern solution; as it has a wireless dongle that works with Android devices and has a downloadable app, which is actively being developed, easy to update.

Buying from Amazon, is a good idea; as you can try it out and return it, if you don’t like it or it doesn’t work?

Note: I use vcds by ross tech and have since 2007; i do not have any experience with these other vw scan tools. I also use a elm327 wifi dongle with apps like dash command or obdfusion; on my apple iPhone XSMax.


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Yeah, unfortunately, coverage for Apple is a. bit weak and then you are getting into the $100-$150+ range, pushing you into the $199 VCDS by Ross Tech territory.
 

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Sounds like a plan; there are so many "vag" Chinese knockoff scanners, its hard to give a recommendation, until you try one. In the past, there were a number of basic VW scanners; that people, had ok luck with but there are so many more now, that have advanced capabilities, that I wouldn't recommend the older stuff (VAG U281, 305, 405, 450, etc.).

The ONLY real VW scan tool; that I have had substantial experience with and is the "real deal", is VCDS by Ross Tech, that is in the $199 price, for the starter enthusiasts kit.


VCDS® HEX-V2® Enthusiast
- USB Interface -


 

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Here is some good discussions about your trouble code and info; testing, viewing live data, see if the data bus is down, up and checking wiring, confirm power, no damaged harness, seems to be your next step.


 

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This vw tech; seems to be referencing a bad door lock module; if wiring is ok.
I would check wiring for damage, and then; check the data bus status, if down, you could disconnect the plug to the door lock module and see, if the trouble code is restored and if the data bus is up communication status is restored.
 

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Note: common problems we see: door lock modules fail, the wiring harness from the body to the door in the ribbed rubber sheath, flexes and the wires break, killing power to the door.

Another issue we see, is previous owners, installing used parts from junkyards; these can be incompatible, physically fitting fine but being incompatible, causing things to not work, killing the communication bus.
 

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So, you took the door panel off and inspected the door with the trouble code?

The code was for the passenger side door control module.

You might unplug that door lock module and see if the convertible top and other side door start working again?

If operation is restored; then that may indicate the unplugged part is defective and causing things on the communication bus, to go down.

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Well, that is the point of a process of elimination; start unplugging things, one by one, to isolate, remove things and check to see the results. It would make sense, to start with the passenger side; the parts that has the trouble code, in that case, was the door lock module?


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