150 K maintenance

At 150k mile (assuming the 100k mile service was done)

• Both coolant loops require fresh Toyota Super Long Life Coolant (a simple drain and refill, not a flush)
• Check the two main coolant pumps (engine and inverter) for correct operation an no leaks. Make certain that the inverter pump recall was done. I f the engine coolant pump is replaced, also replace the serpentine belt.
• Engine air and cabin filters
• Engine oil and oil filter
• If never done, change out the PCV valve
• Check how long since the Tranny fluid was drained and refilled. If there is no record, do it now. A 4 qt refill with Toyota type WS ATF should cost about $100. If they recommend a FLUSH, run don't walk to another dealer.
• Check the status of the brakes (probably still have miles left in them) and clean out the rear drum brakes.

The next major maintenance is at 200k miles when you should again do the coolant and change out the spark plugs (they should be replaced every 100k miles with iridium plugs). The air filters should be replaced at 30k mile intervals.