Just got my car back from the dealer and they said that I need to have the knock sensor in my car replaced. They told me that some rodents chewed the wires..yada yada. They said it would cost 600 to get fixed...they said they have to take the top of the engine manifold off which doesn't seem that hard. How "intense" is this job? Is it something I should let them do?

 

Knock sensor chewed by a mouse/Mice eating wires/Mouse Ate my TL (merged threads) (click here)