Hi peeps. Need to remove the ECU from the car (year 2001 Passat TDi) but not sure how.

If I remove the panel covering brake servo, battery and all, I can see about 2/3 of the ECU plastic box. The lid isn't screwed down (previous owners removed maybe) and I can lift it a couple of inches but it won't come off.

I'm really hoping that the scuttle panel at the base of the windscreen doesn't need to come off, the one where you're warned it can crack the glass if pushed on too hard...

Advice most welcome. Thanks.