Q5 Transmission Slips & Grinds: Torque Converter Alert

Had a very similar issue with my 2021 Q7 3.0 TFSI last winter. I have some experience working on cars but automatic transmission work is definitely specialist territory. The symptoms matched exactly what you describe, jerky gear changes, grinding sound and warning lights. The lock-up clutch inside the torque converter was failing, causing converter fault codes. Initially thought it might need a full transmission rebuild, but thankfully the automatic transmission specialist confirmed it was isolated to the converter failure. The repair involved: Removing transmission, Replacing torque converter, New transmission fluid, Complete adaptation/programming Total cost was 2120 Euro including parts and labor. The workshop needed it for 3 days to complete everything properly. Since the repair, the transmission has been shifting perfectly with no issues. Before suggesting anything specific for your case, could you share: Current mileage, When did symptoms first appear, Does it happen more in certain gears, Have you noticed any transmission fluid leaks, Any previous transmission services This information would help determine if your situation matches what I experienced with the converter fault.

Given my car only has 56998 KM and had its last service 2 months ago, the symptoms are quite concerning. The issues started suddenly last week, most noticeable when shifting between 2nd and 3rd gear. The transmission warning lights and noises are exactly as described in your case. Your experience with the torque converter failure sounds very similar to what Im experiencing. Its reassuring to hear a complete automatic transmission rebuild wasnt necessary in your case. The 2120 Euro repair cost seems reasonable considering the work involved. The grinding noise during gear changes has gotten progressively worse over the past few days, so I should probably get it checked soon before risking more severe transmission damage. Will contact a certified transmission repair specialist to diagnose if its indeed a converter failure like in your case.

Thanks for the follow-up details. Those symptoms at just 56998 KM definitely warrant immediate attention. In my case, the grinding noise also started between 2nd and 3rd gear before affecting other shifts. The quick progression of symptoms you describe matches my experience exactly. When my torque converter lock-up clutch failed, waiting longer only led to more transmission stress. The metal particles from the failing clutch can contaminate the entire automatic transmission system if left unchecked. Some additional points from my repair experience: Workshop found metal particles in the transmission fluid, confirming torque converter wear, Engine surge was noticeable especially during lock-up engagement, Complete fluid flush was necessary to remove contamination, New converter came with updated clutch materials Since your symptoms are identical and the automatic transmission behavior matches what I experienced, it strongly suggests the same converter issue. Getting it diagnosed quickly prevented needing more extensive repairs in my case. Important to use a specialist who regularly works with these transmissions, the adaptation programming after repair is critical for proper shifting.

Based on your case details, Im really glad I asked before taking it to a general repair shop. The similarities between our transmission problems are striking, especially the progression of symptoms and the specific issues between 2nd and 3rd gear. After hearing about the risk of metal particles from a failing clutch contaminating the automatic transmission system, I just booked an appointment with a certified transmission specialist for next week. Really want to avoid turning a converter failure into a complete transmission rebuild due to contamination. The cost breakdown and repair timeline you shared helps set realistic expectations. 2120 Euro and 3 days turnaround sounds fair for the work involved. Its much better than risking more extensive transmission damage that could cost significantly more. Will make sure they check for metal particles in the fluid and do a complete flush as part of the repair. Thanks for emphasizing the importance of proper adaptation programming, will specifically ask about their experience with these transmissions when I drop it off. Thanks for sharing such detailed information about your converter fault experience. It really helped confirm my suspicions and plan the next steps for addressing this transmission repair properly.