well he was told that the brakes were at 50% so that would be his problem if he didnt fix it right away.
as for fixing the car, how about fixing it your self? it will save you hundreds if not thousands in labor costs, having the starter replaced can run upward of $1000usd. if you do it yourself you just need to buy a few gaskets, and the starter or you can get the starter rebuilt.
speakers go out after 10 years, the cone rips and thats that so you will have to get replacements that match your needs, replacements from lexus are really not available. and after your done with this this car should treat you very well this car has relatively few problems compared with the LS simply because it is simpler. but common suspension problems may occur so be aware.