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JochenMeyerFan

VW Scirocco DSG Transmission Failure Symptoms Guide

Looking for guidance with my 2012 Scirocco DSG transmission problems. The gearbox is acting up with multiple issues: paddle shifters not responding properly, rough gear changes, grinding sounds, and the transmission went into limp mode. The transmission control module might be the culprit but Im not entirely sure. Has anyone dealt with similar symptoms and got them fixed? Particularly interested in hearing about repair experiences and what the actual issue turned out to be. Would help me a lot to know what to expect at the repair shop and get an idea of the automotive ECU diagnosis process. Already got some error codes stored but want to understand if a transmission repair or control unit replacement might be needed before heading to the shop.

4 comment(s)

maramaier41

I had similar transmission problems with my 2014 Golf GTI DSG last year. Having some experience with DSG gearbox issues, your symptoms sound very familiar. The transmission control module was causing identical problems in my case, erratic shifting, unresponsive paddles, and the dreaded limp mode. After proper diagnosis at a specialized workshop, they confirmed the control unit was defective and needed replacement. The repair involved: Full transmission diagnosis with advanced diagnostic tools, Removal and replacement of the control module, Programming and adaptation of the new unit, Test drives to confirm proper function Total cost came to 1000€ including parts, labor and programming. The car has been shifting perfectly since the repair. To better assist with your specific case, could you share: Current mileage on your Scirocco, Which error codes you retrieved, Whether the check engine light is on, If the issues occur more in cold or hot conditions, Any recent transmission maintenance history The car computer and transmission control systems are quite similar between our models, so getting this additional information would help determine if your issues match what I experienced.

JochenMeyerFan (Author)

Thanks for sharing your experience. Just got the error codes pulled again, P0722 and P0785 showing up. The symptoms started right after my last DSG service at 120000km. The control module seems like the probable cause, especially since the transmission problems get worse when the engine is cold. The car computer throws these warnings consistently now, not just intermittently like before. Has anyone else had success with just a transmission control unit reprogram rather than full replacement? Hoping to avoid the 1000€+ repair cost if possible.

maramaier41

Based on those error codes and symptoms, I can confirm the transmission control unit is very likely the core issue, just like in my GTI case. I initially tried the reprogramming route with my transmission problems hoping to save money, but it only provided temporary relief before the issues returned. The P0722 and P0785 codes, combined with cold-start transmission problems, match exactly what my GTI displayed before the automotive ECU completely failed. Attempting shortcuts like reprogramming could actually lead to more severe gearbox issues down the line. My transmission repair experience showed that a complete control unit replacement was the only permanent fix. After trying the reprogram, I ended up paying more in diagnostic fees before finally doing the replacement anyway. The cold weather performance problems were a clear indicator of failing transmission control electronics. The timing after your DSG service suggests the issues were probably developing before, and the service process may have just exposed the weakening control unit. This is a known pattern with these transmissions. Worth noting: error codes related to speed sensors and shift solenoids often trace back to transmission control unit faults in these DSG gearboxes. Getting it fixed properly the first time will cost less in the long run.

JochenMeyerFan (Author)

Thanks for the detailed explanation. My Scirocco is showing those same error codes consistently now, so I guess trying to save money with a reprogram would be risky. Since the transmission control issues are getting worse in cold weather just like your GTI did, I will probably bite the bullet and go for the full control module replacement. Good to know about the connection between the DSG service and these problems appearing. The electronic issues were likely developing before, which explains the gradual decline in shifting performance I noticed. Will schedule the car computer and transmission control unit replacement next week. Rather spend the 1000€ now than risk more expensive transmission damage by delaying. Really helped having your insight about the failed reprogram attempt, saved me from going down that path first.

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