Various Maintenance at 100,000+

I'm at 116,000 on my 2010. The spark plugs need to be done at 120,000. $160 seems a little steep but I haven't had mine done yet so I can't say what my dealer is going to try to charge me.

I'll have to check on the coolant flush but it's probably due as well.

I did my inverter coolant at 100,000. The owner's manual says it needs to be replace, not flushed. I did it myself for around $15.

I have no idea what they are talking about with the air induction.

The cabin air (AC) filter should have been replaced a few times by now but you can do it with a screwdriver in about 5 minutes for $12.

AC Evaporator flush (again, whatever they are referring to) is nowhere in the owner's manual.

So, the spark plugs, the coolant and the inverter (no flush) is probably legitimate. But I imagine your Firestone dealer can do it a bit cheaper. I would just make sure Firestone uses the correct fluids as specified in the owner's manual.

 

AC Evaporator Flush is a foam cleaner you spray in via the ac evaporator water drain. You can buy the kit on Ebay sometimes for about $25. The drain is accessible through the right front wheel well. The kit comes with a special hose that connects from the spray can to the drain outlet. Sometimes the coils will get an "old sock" musty smell, usually at the beginning of ac operations. This musty smell is sometimes falsely attributed to the car seats or carpet.