Welcome!
Totally what Gerdo says. "change all fluids" means, all fluids: especially front, rear, transfer case (I wouldn't use synthetic), if auto flush transmission, oil, coolant, power steering, and if you have no prior knowledge of brake servicing, bleed the next time you maintain them. I've had a rear end and 3 transmissions fail over the years(not Toyotas!) and the only ways we have of getting the max life out of these components is to service them (keep them clean clean clean) and to not abuse them...unless of course you want to break something! Toyotas are not immune to poor servicing but they're more tolerant than most.... Have fun!