The first thing you need to do is remove the cruise control (auto drive) computer from the car. To do this you will need a 10mm socket with an extension bar (about 200mm ) and a constant velocity joint and a torch
The unit is located above the drivers feet above the the pedals, it is a black box about 5 inches across. It is held in place with 2 10mm bolts remove these and the wiring plug and then the unit should come out. The wiring plug has a small clip on it you need to push this in to remove the plug.
Once you have the unit out remove the metal bracket. The circuit board is held in by 4 plastic clips you can see these and should be able to figure them out if you have got this far. Then the board will just slide out.
To remove the limit you need to you need to put a wire across jumper j300 this is shown in the picture below the jumper is circled in red.
Now just put it all back together and put it back in the car and cruise at whatever speed you like.