Stall when engaging reverse gear on DSG

Hello dear community,
Since I haven't found anything similar in my previous searches, I decided to start a new topic. And specifically...
I have a VW Touran 2.0 TDI (Engine Code: BKD) with a 6-speed DSG (02E) from 2005. The problem always occurs in a cold state, just after the engine has started: I get in the morning, start the engine, and put the reverse gear into the DSG. After driving backwards for five meters, I now put D into the DSG, and that's when the problem occurs: When switching from R to D, you can hear and feel a kind of 'thud' coming from the gearbox. As if the gear is forcing the gear into the gear with force.

I'm guessing that this isn't good for the transmission, and I now want to try to fix it somehow. The independent workshop is at a loss, and I definitely won't be going to my dealer .

I have recently had a gear oil change performed approximately 5000 km ago, and the oil was already 'normal' (dark brown/black), and the mechanic also indicated that there was definitely some wear on the clutch. No wonder after 210,000 km.

Therefore, I suspect the clutch might be the problem. Perhaps it's already quite worn, and the gearbox control unit doesn't know how far to depress the clutch. I wanted to have the basic gearbox settings reset, but the independent garage can't do that. I found the instructions for doing this already here in the forum, but I don't have a VCDS and, to be honest, I'm not really comfortable working on the electronics. Maybe someone from the Burghausen area could help me out .

Does anyone perhaps have an idea what the problem might be? Or has anyone else experienced a similar problem and found a solution?

I am open to any suggestions and assistance!

Best regards, Martin

Hi,

For my DSG gearboxes, an oil and filter change was always required every 60,000 km. This is also sensible because the clutch runs in oil. However, this is different with the 7-speed manual gearbox with dry clutches.
Does the problem exist since the washing? Is the oil level okay?

Hello,
Regarding my DSG, the interval is also 60,000 Km, and this has always been adhered to. So, at 60,000; 120,000; and 180,000 Km, I always had an oil change with a filter change. At 205,000 Km, I had a flush performed, as my friend's workshop had acquired a flushing machine. This means I had it flushed at half the interval, and the gear oil looked like in the picture. Since then, the gearbox has shifted much better, but this problem with the 'thud' had already occurred before, and it didn't change much after the flush. It has become a little quieter and less noticeable. Therefore, it can be ruled out that the flush caused any problems. She has even done it a little better.

I was present during the oil change, and the oil level was correctly adjusted at that time, so I can probably rule this out as well.

Because you're mentioning the oil level: Could it be that the problem occurs because the gearbox oil pump hasn't yet pumped out much oil from the reservoir after starting? Is the gearbox oil pump actually driven by the engine or in some other way?

Best regards, Martin