2005 Scion tC with 31000 miles on the odometer The dealer has recommended an 85 dollar power steering flush Is this necessary?

A power steering flush on a 2005 Scion tC with only 31,000 miles is generally not necessary. That's very low mileage for a power steering system to require a flush. Power steering fluid typically lasts much longer, often 50,000-100,000 miles or more, depending on driving conditions and fluid quality.

The dealer is likely trying to upsell you on a service that's not yet needed. Unless you're experiencing problems with your power steering (e.g., whining noise, difficulty steering, stiff steering), decline the service.

Before declining:

* Check your power steering fluid level. It should be between the minimum and maximum lines on the reservoir. Low fluid is a problem that needs addressing, but a flush isn't necessarily the solution (just adding the correct fluid might be sufficient).

* Look for leaks. Check the power steering pump, hoses, and lines for any signs of leaks.

If you're concerned, get a second opinion from a different trusted mechanic. They might be able to confirm that a power steering flush isn't needed at this low mileage. Many mechanics will happily inspect your fluid and confirm it's still in good condition at no charge.