I got it at 160k miles, changing oil every 5k miles since then. Usually when maintenance required screen comes on and after oil change i go into settings and reset the message. I recently did the oil change at 180k miles and reset the message but at 182k it came back on again and this time it says maintenance required "visit your dealer". When i go into settings it does not allow me to reset it. My guess is that its coming on perhaps due to major maintenance interval. The car runs excellent, smooth, no issues at all. At this mileage should I be looking at any of the following e.g. - Transmission eCVT fluid drain and refill - engine coolant - inverter coolant - spark plugs ?? Also, how can i disable the maintenance message?
As far as I know, you should be able to simply reset the maintenance minder. Is your CEL on? Your self diagnostic routine may have tripped something. If you have a code read; you should probably plug it in and check the error logs. FWIW; both coolants@100K and spark plugs@120K; should've been changed a while back, per OEM manual. ATF is optional, but I do it every 100K miles; ditto with brake fluid system flush. https://assets.sia.toyota.com/publications/en/omms-s/T-MMS-20PriusPrime/pdf/T-MMS-20PriusPrime.pdf Hope this helps.....
Try resetting it again. I've attached the maintenance schedule link for your car above. Try refreshing the page, if you don't see it.
