Hilux transmission issues

I'm having issues with my 2017 Toyota Hilux diesel. It's got about 107000 km on it. The automatic transmission is acting up, shifting is all over the place, the transmission light keeps popping on, and sometimes it refuses to shift properly. It even went into emergency mode the other day! Anyone else experienced anything similar? Could it be the transmission oil?

4 comment(s)

Sounds familiar. I had a similar issue with my old Volvo a while back. The transmission was slipping, and the gear changes were really rough. Have you checked the voltage? Mine was showing undervoltage and that triggered all sorts of weirdness with the transmission. Has the oil ever been changed?

Undervoltage, huh? That's interesting. How did you figure that out? And no, I haven't changed the transmission oil yet. Do you think that could be the main culprit?

Yeah, the Volvo threw up a bunch of diagnostic codes pointing to low voltage issues, which messed with the transmission control unit. Considering your Hilux is showing similar symptoms and you haven't touched the transmission oil, I'd say it's worth getting it checked out ASAP. Maybe take it to a workshop that specializes in automatic transmissions?

I took it to a mechanic, and you were spot on. Turns out the undervoltage was causing the transmission to freak out. They replaced the transmission oil for 240€, and it's running smoothly again. Appreciate the help!

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