The Gateway can be 3 possible locations
1. Behind the ashtray (MY2004)
2. Above The clutch Pedal (MY2005 & MY2006)
3. Behind the Relay carrier plate (MY2007 - Current)
behind the Ashtray
Pull on Gearknob Gaitor, You will see 2 T20 Torxs screws, remove these and lift
Unplug the ESP and 12v
Look for a RED PLUG at the back
Unplug it and remove, nip the lugs on the back and pull towards you
Above The clutch Pedal
Undo the 2x Torx screws of the drivers footwell trim and lower it down.
The Cubby bin under the light switch, nip the sides in and pull it towards the drivers seat. You will see a Torx screw that holds the lower duct pipes in place, remove the screw and pull the ducting out.
The gateway will be up and look for the RED Plug
Unplug it
Prise the Plastic holder away from the metal frame with a slotted screwdriver
and remove it with the gateway in place.
Change the gateway over and reset the plastic rivet which held the holder in place.
And refit it
Behind the Relay carrier
Remove the Cubby bin under the light switch
Unclip the relay carrier and move to one side
Look at the back for the RED PLUG
Unplug it and lift the gateway out
refit new gateway
http://www.r32oc.com/tutorials-guides/30166-canbus-gateway-location-removal.htmlhttp://www.my-gti.com/2296/can-bus-gateway-removing-installing-and-upgrading-volkswagen-golfI changed a Gateway in a Passat 3C and the plug was Blue in colour, have also heard of blue plug in a Skoda Octavia