clk320(w) starts then stops, ecu water ingress?

[felix2]

Hi my clk 320 (W) started then stopped after about a mile, RAC attended and thought it was fuel, but garage has checked and taken off ecu and sent it for checking! £66 for that and they say it is water damage but can fix for £390! is this normal and is it worth getting an ecu off ebay, if so do i need to get keys etc with it?
Thanks

 

[television]

What ECU is damaged.

 

[felix2]

I presume its the engine one, as the garage said that it was only giving just over 3 volts to the fuel pump and looked like it had water ingress. Not physically seen it!

 

[chrischance]

Sounds a bit similar to my problem when water came in through the sunroof drain and wet the EAM beneath the dash (drivers side).

An EAM from ebay cost £70 without the security attachment, which means you need to change the keys if that needs renewing. In my case the security attachment didn't need renewing so that saved a few £s.

So your problem depends on what is water damaged.
Good luck with it.