I can't count the number of times this happened to me.

You got charged for them to diagnose the problem.

They don't listen to customers when it comes to technical things UNLESS you put in writing that you want them to do "X". Pure and simple.

When you leave the car you tell them you want the Relay Part # XXX to be replaced - what's the cost going to be to do that? Don't leave the car if you get a bunch of mumbo-jumbo.

If it's that easy to replace and you already knew what was wrong, why'd you bring it there?

(By the way, that's a question I asked myself a million times - most recently when I got my wallet emptied to have the dealer tell me my Jeep ECU was bad and charge me three times retail, and three hours labor to remove three bolts and unplug a pigtail.)

I guess in my case I wasn't 100% sure and I knew if I bought the part and it didn't fix my problem, I wasn't going to be able to return it....