victoriablade1

Seat Altea Diesel Transmission Problems

Need some brainpower here. My 2015 Seat Altea diesel has gone completely bonkers. The engine refuses to start sometimes, the check engine light's on, and the gearbox is slipping like crazy – shifting is super unclean. I hooked it up to a reader, and it's throwing codes related to the transmission. From what I've gathered, it points towards a defective control unit. Anyone else had this transmission failure with the dreaded DSG? I'm staring down the barrel of a 1000€ repair bill, and I'm trying to figure out if I'm missing something obvious before I pull the trigger. Could this be related to the gear shifter being dodgy?

A 2015 Seat Altea diesel is experiencing transmission problems, including engine start issues, a check engine light, and erratic shifting. Diagnostic codes suggest a defective control unit, possibly linked to the DSG transmission. A similar case pointed to a faulty mechatronic unit, which was confirmed and resolved with a repair costing 1000€. The solution involved replacing the mechatronic unit, leading to improved shifting performance.

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4 comment(s)

Whoa, sounds rough! I had something similar happen with my Altea a while back. Same symptoms, engine light and all. Did you notice any issues with the park brake or shift lock? Mine was acting all kinds of funky before the transmission went full potato.

The park brake does feel a bit weird sometimes, almost like it's not fully engaging. What exactly was up with yours? Was it a total transmission failure, or just some weird shifting issues? Any details would be awesome!

Yeah, the park brake issue was a big clue for me. The shift lock was also playing up, making it a pain to get it out of Park. It did end up being the mechatronic unit in the transmission. Honestly, save yourself the hassle and take it to a decent workshop. They'll be able to confirm for sure, but it sounds very similar to what I went through.

So, yeah, it was the mechatronic unit, just like we suspected. A hefty 1000€ later and she's shifting smoother than ever. Thanks a bunch for the heads up! Saved me a ton of diagnostic headaches.

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SEAT

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ALTEA