Changing ECU procedure (Cupra)

[BMcN]

Ok, your probably thinking here we go again. But I am not looking for the the VAGCOM part of changing an ECU is very well documented - however I am not able to find anything on actually changing the ECU. I am pretty confident but it doesn't do any harm to double check, especially when playing with with something so valuable.

So is it simply:

Disconnect negative terminal of battery,
Disconnect positive terminal of battery,
Pull ECU out,
New one in,
Reconnect battery,
Ignotion on and VAGCOM it.

Job done? Maybe take a few waterproofing measures while I am in there.

 

[Fl@pper]

the ecu's are vented so dont seal em completely over anything that looks liek it should be open

just ask the ex superchips guy who's new *chip* went pop in water enclosed in a tesco bag


in the middle of that list

remove wipers
remove scuttle panel
unbolt ecu (3 bolts i think it is on mk2)

 

[BMcN]

Talking to me on MSN for 30min then you tell me this in a thread I make! Silly Fl@pper.

 

[Fl@pper]

well i did twice well i tried to - sorry gets confusing written on one line at a time

and when you mentioned t/bodies i was off into 16v mode

only added it to make sure i could say it in english

 

[m0rk]

ECU just slides out - needs releasing from the 'case' with a screwdriver on the RHS

 

[BMcN]

well i did twice well i tried to - sorry gets confusing written on one line at a time

and when you mentioned t/bodies i was off into 16v mode

only added it to make sure i could say it in english

What are you talking about? You never get more than 2 lines before mentioning your hotrod again

Thanks anyway. I'll not make it water and air tight but will try and sheild it a bit.

 

[Fl@pper]

Thanks anyway. I'll not make it water and air tight but will try and sheild it a bit.

theres a plastic shield over it anyway - just make sure its flat and secure

 

[BMcN]

Ok guys, I'll take a few pictures as go along and I'll construct a wee guide at the end if all goes to plan. Can be added to the VAGCOM part that is already here.

 

[didgy2]

just to note, never removed wipers on mine!

 

[BMcN]

just to note, never removed wipers on mine!

Is that because there was no need and there was plenty of room or because you could just squeeze it out and decided to try and get away with as little work as possible?

 

[Copra]

plenty of room, done many times

 

[Ibiza125]

Just to confirm on an old thread.

Is there any need to do anything on vag-com before disconnecting the ECU? I have read and re-read the ross tech guide but this is still unclear to me.

 

[Big_daddy]

I just clear any faults, unlplug battery and disconnect the ecu...