buy all the items from ebay or whatever and source a local indy to put them on, under no circumstances go to Lexus with a 2005 car.
Items you need are,
Oil - i use 5/30 castrol edge, plug oil filter
pollen/cabin filter
air filter
then also potentially replacement brake pads, discs, and spark plugs, and the brake fluid replenished.
thats if you don't know when the above was last done.
If you do all the above it will last a long time before it needs any more servicing.
also you should get the slider pins greased on the calipers.