if it is the coupe model then look to the right of the steering wheel where the fuse box take the cover off and at the top Left hand corner on the fuse box there is a 16 pin plug that is the plug your looking for
On my 2004 Megane (II) it is located underneath the cigarette lighter port. Pull off plastic cover of this "coin-tray compartment" and you will expose the diagnostic port.
The diagnostic port for a 2005 Renault Megane is located under the dashboard, to the left of the steering wheel. You may need to remove a cover or look behind the fuse box to access it easily. This OBD-II port allows for connecting diagnostic tools to read and clear error codes.
Directly in front of the ciggy lighter is a plastic blanked off cover the port is behind that.
Your obd cinch socket 16 pin is under the ashtray in centre console
You can find the refrigerant charge port on top of the air conditioner compressor. The refrigerant charge port will be labeled as the low pressure port.
open the ashtray. gently pull it out and voilá! an OBD-2 port :)
The Renault Master van has been produced since 1980, its also known as the Opel and Vauxhall Movano. The diagnostic port is located in the fuse box, found behind the steering wheel.
It is on the top righthand side at the back of the engine compartment.
Remove the ash tray from the centre console, just behind there!
This is located within the fuse box under the dash in the passenger side
remove the bottom cover on the centre consol , in front of the cigarette lighter
On steering column directly below steering wheel. Behind a plastic cover.