ECU Location?

I'm a new TDI owner. Where is the ECU located on a Golf 4, 2005 TDI?

It's underthe rain tray where the windshield wipers are mounted. You have to undo a few things to get in there and then you have to remove the harness clips.

Here's a little How-To from APR:

http://goapr.com/VW/support/ecu_tt_golf_gti_jetta.pdf

Thanks. I tried that once and it looks like I missed it. Do I have to remove the
entire plastic cover of the rain tray to get to it?

No you don't but you can use a couple of small blocks of wood to prop it up so you can use both hands easier.

you don;t have to remove it completly but lifting the front edge is needed to slide your hands in, slide out the clips and remove connector, and slide out the ecu.

The connectors of the wiring harnesses are hard to take out. You have to pull the clip towerd the outside of the ecu and pull on the connector at the same time. Than, on the left side you will see a small metal clip/bracket that hold the ECU in the tray. Move that to the left and you can pull the ecu out.

In the future, please post the questions in the apropriate sections of the forum. Even though this will lead to a power upgrade, it is not a power upgrade.

dont be so harsh on the newbie doc