M3

[jmacca999]

Afternoon,

I recently purchased a 20 pin OBD plug so then I can check my car's diagnostics. I have an M3 2003 year but Im unable to find the plug either under the bonnet or inside the car somewhere. Can somebody please point me in the right direction as to where this plug is??

Thanks
James

[SpeedInfusion]

engine bay i think

[nukeduster]

there isnt one on a 2003 m3. you need the adapter to the obdii pinout AFAIK.