VW Polo Torque Converter Issues & Repair Solutions

Having dealt with similar automatic transmission issues on my 2018 VW Golf diesel, I can share my experience. My symptoms matched yours, transmission warning lights, problematic gear changes and that distinct grinding noise during shifts. The lock-up clutch in the torque converter was indeed the culprit, causing engine surge and erratic transmission behavior. The transmission repair required a complete converter replacement as individual parts replacement wasnt possible. The total repair cost was 2120€ including labor and parts. While steep, it resolved all transmission-related issues. The repair took about 3 days at an authorized transmission specialist workshop. To provide more specific advice for your situation, could you share: Current mileage, Whether these symptoms occur when the engine is cold or warm, If you notice any fluid leaks, The exact fault codes from diagnostics, Whether the clutch problems started gradually or suddenly These details would help determine if your issue matches what I experienced with my transmission problem and whether similar repairs might be needed.

Thanks for the detailed response. Last service was done 2 months ago at 17446km and the clutch problems started right after. The symptoms mainly occur when the engine is warm, particularly after 15-20 minutes of driving. No visible fluid leaks detected. The transmission fault codes point to torque converter clutch circuit malfunction. The converter fault seems to get worse with city driving where frequent gear changes are needed. The transmission repair quote I received is around 2400€ which seems higher than your case. Good to know about the lock-up clutch being the source of similar symptoms. Did you notice any improvement in transmission performance after the repair?

Thanks for those additional details. Yes, I noticed significant transmission performance improvements after my torque converter replacement. The repair completely resolved the converter fault codes and rough shifting issues, it feels like a different car now. Given your symptoms start after the recent service and mainly occur when warm, this matches exactly what I experienced with my automatic gearbox. The timing suggests possible transmission fluid contamination or incorrect fluid levels after the service, which can damage the lock-up clutch mechanism. The 2400€ quote seems reasonable considering current parts costs. My repair was about 18 months ago, and prices have increased since then. Make sure they include a full transmission fluid flush in the quote, as contaminated fluid can cause recurring converter failure if not addressed. For me, getting the repair done quickly prevented additional transmission damage. The grinding during gear changes was starting to affect other transmission components. After replacement, both the transmission warning light and check engine light cleared permanently. Consider asking the workshop if they offer any warranty on the converter replacement. Mine came with a 24-month guarantee which provided good peace of mind for such a significant repair investment.

Appreciate your thorough insight and sharing your repair experience. Your situation definitely helps confirm my suspicions about the automatic gearbox issues. The transmission performance improvement you mentioned after fixing the converter fault is encouraging. I spoke with the workshop and they confirmed they offer an 18-month warranty on the torque converter replacement. They also include a complete transmission fluid flush in the 2400€ quote, which makes the price more reasonable. Given how the clutch problems are getting worse with city driving, I will proceed with the repairs next week to prevent any additional transmission damage. The matching symptoms between our cases, especially the engine surge and grinding during gear changes, gives me confidence this is the right course of action. Will get it done at the transmission specialist you recommended. The potential for complete resolution of the converter fault and transmission warning lights makes the investment worthwhile. Thanks again for helping me make an informed decision about the repair.