S80 automatic transmission issue

My 2014 Volvo S80 with a gasoline engine is acting up! The automatic transmission is shifting weird, the transmission light is on, and it's not shifting right at all. Sometimes it even goes into emergency mode. Mileage is at 249804 km. Any ideas?

4 comment(s)

I had a similar issue with my S80. Is it only happening when the engine is cold, or does it happen all the time? Have you checked the transmission fluid level? Also, has the battery been checked lately? Low voltage can cause some pretty strange issues with these cars.

It seems to happen more when it's warmed up, actually. I haven't checked the fluid level myself. As for the battery, I replaced it about a year ago. What kind of weird issues are we talking about regarding low voltage?

Low voltage can mess with the electronic control units, including the transmission control module. This can lead to the symptoms you're describing. I'd suggest getting the charging system checked. In my case, it ended up being a faulty voltage regulator. Best to get it diagnosed at a shop.

Thanks for the tip! Took it to a shop, and you were spot on. Turns out there was undervoltage! They flushed the transmission oil while they were at it. Cost me 240€, but it's driving like new again!

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