Thanks, blueranger, for the reassuring words! About the doing it yourself thing, I have thought about it but quickly got scared because one end of this hose goes down and seems hard to get at for disconnecting, let alone connecting. Unless it doesn't require a hose clamp and I can just jiggle it onto the fitting for a secure, tight fit. Would I also need to drain the radiator? Thank so much!

ps,
I don't think my MB dealership is gonna have that hose for a measly $10! I'm hoping it's gonna be at least that cheap!