Inherited a 2010 Prius (90K miles). Tires look good. What should maintenance checks / tasks should be performed at 15 years and 90K miles? Would prefer to get ahead of tasks (preventative maintenance) to avoid breakdowns / downtime. Any resources (manuals / lists /etc) are always appreciated as well as any lessons learned (anecdotal experience). Thanks
Change the engine and transaxle oil, drain and fill both coolant systems, start a savings account and hope for the best This guy has links in his profile for manuals and how to. Mendel Leisk | PriusChat
Save your money for the future headgasket replacement you can find all the maintenance videos on my YouTube page.
Second Nuts about Bolts YT page. It's a goldmine. And yes, put money aside for a head gasket kit. I would also throw in an Asin Water Pump and Thermostat, some silicone grease (if you have to do a head gasket job), a flex head ratchet (I got mine from harbor freight. It's been a goldmine) and I'd personally recommend an endoscope because loosing tools/screws in a prius is a pain in the nice person to fetch and retrieve. If you have the flex ratchet and an endoscope then you're golden imo. rjparker called out the maintenance steps I'd preform.
Save up at least $2K rainy day fund. Low mileage at 2010 usually means hybrid bat low cycles leads to replacement
change the brake fluid. There may be different kinds of advice out there, but I suggest every 3 years. Get a scan tool and maybe do the Dr. Prius battery health check. This will give you a baseline to judge against.
There’s worthwhile maintenance not mentioned by Toyota USA: 1. EGR (Exhaust Gas Recirculation) system cleaning, including intake manifold. I would get on this ASAP, and repeat every 50k miles. Top two links in my signature* have info/tips. Also, see @NutzAboutBolts video (link in pinned thread, top of this forum). i suspect there’s a correlation between the carbon clogging of the newly designed for Gen 3 to EGR system and the all-to-common head gasket failures. 2. transaxle fluid change, at least once, info in my signature. 3. brake fluid change. This is not mentioned by Toyota USA, but Toyota Canada says 48k kms or tri-yearly. 4. rust mitigation: jack up one end at a time, see what’s happening, deal with it. attached is a table format translation I cobbled (Excel and PDF formats) of Toyota USA’s event-by-event schedule, both as-is (stops at 120k miles), and an extrapolated to 240k miles version.