W202 C220 CDi Diagnostic Plug

[barny1]

Can any one tell me where this is please on my car? Its a 1999.

I cant find a round plug under the bonnet, any help or photos would be much appreciated.

Thanks in advance

Barny.

 

[vijilants]

With the bonnet up and facing the engine, far right hand corner just infront of the windscreen there is a black circular cover about 2in wide with a nut like head on it. Unscrew it and the plug is under it.

 

[barny1]

Thanks for the reply I'll have a look lunch time. When I looked over there all I could see was the aircon unit. Check again. Thanks for your help. Barny