Irregular transmission shifting and warning light in Toyota Fortuner 2013 - suspected defective transmission oil pressure sensor

Hello, I can well understand what you are going through. I recently had similar stress with my 2015 Toyota RAV4. Mine also had similar symptoms - erratic shifting, grinding noises and a persistent warning light. The workshop diagnostics unit told me that my transmission control unit was faulty. Was no small feat to fix, let me tell you. Had to have the whole thing replaced. The biggest problem was that my car was in the garage for a long time and I had to get by without it. So I hope it's not as serious for you as it was for me back then. It could also be the transmission oil pressure sensor, as you suspect. But in any case, it's impossible to avoid the problem. Take your car to a reliable garage for an inspection. Hopefully it's an easy fix for you and your Fortuner!

(Translated from German)

Hey, thanks for your reply. What you went through with your RAV4 was intense. Do you remember how much the whole thing ended up costing? Were you able to repair it immediately afterwards or were there other problems? I really hope it's just the transmission oil pressure sensor in my case. If not, well, I'll definitely have to get my Fortuner checked out. Thanks again for your advice!

(Translated from German)

Hey, no problem, that's the whole point of these forums, right? Yes, the bill for the repair of the gearbox control unit really blew my mind: it cost €1000! But afterwards everything ran smoother than before. There were no further problems after the repair, thank goodness. Well, and as far as your transmission oil pressure sensor is concerned, you were right. That's exactly what happened to me. Since I've been to the garage, this malfunction has been rectified. So I hope that nothing more than that is broken on your Fortuner. Of course, it's always annoying when something doesn't work, but don't hang your head! Keep us up to date and good luck!

(Translated from German)

Wow, €1000 is really a lot of money. But if you didn't have any further problems afterwards, it seems to have been worth it. It's reassuring to hear that you only had a faulty transmission oil pressure sensor and that the problem could be fixed. Hopefully it will be similarly straightforward with my Fortuner. Yes, I'm not going to hang my head and take the car in for repairs. Will definitely keep you posted! Thanks again!

(Translated from German)