Remove the top interior trim piece

 
Remove the trim panel behind the passenger seat

 
The EC is the silver box near the top. It's the only box on the passenger side. It has 4      connection plugs on the left and a small single black and white plug on the right side of      the box looking at it from the passenger seat.

 
Undo the 4 10mm bolts, 2 on the top that are obvious, and 2 on the bottom under the      black bundle of wires

 
Remove the CPU very carefully, dont want to pinch any wires.

 
Install is the reverse

Do It Yourself