ECU Swap & key coding

[Andi 0]

Im about to Install a complete 2nd hand supercharger kit inc the chipped ECU from the the other car.

Will i need to code in my keys or is that only for when you change clocks ?

Thanks

[Gazbarber1982 3]

You need to reset the ecu to factory settings. Nothing to do with the clocks on a mk3

[Andi 0]

Oh rite and how do I do that ?

It will be a complete ecu swap that I'm doing. Not just the chip.

[cbmotorsport 0]

Have you got access to vag-com? You need to do it with that, aslong as your key matches your immo box then you can pair the ecu to it.

[Andi 0]

I have genuine vag.com

What do i need to to to reset it ?

[Caddyslammed 16]

Is the immo box inside the ecu, or somewhere else?

[Andi 0]

It's part of the dash clocks assy.

[Caddyslammed 16]

Cool mate

[cbmotorsport 0]

The immo box is not part of clocks on a mk3 , its behind and to the left of them on a seperate bracket, using vag com, get into the car and do the following once vag com is open and connected

[select]

[25 - Immobilizer]

in there you will see a section that says something like 'coding' i forget exactly what it is , there will be a 5 digit pin starting with a 0.

next,

Close Controller

INSTALL THE NEW ECU

then

[select]

[25 - Immobilizer]

[Login - 11]

4-digit PIN

Enter zero followed by the 4-digit PIN. For example, if your PIN is 1234, enter 01234.

(THIS NUMBER IS THE 5 DIGIT NUMBER YOU GAINED FROM THE ABOVE INSTRUCTION)

[OK]

VAG-COM will validate the data you have entered and return you to the Login screen, where the Login Code will show as "XXXXX".

[Do it!]

[Adaptation - 10]

Channel 000

[Read]

[save]

[Done, Go Back]

[Close Controller, Go Back - 06]

Switch OFF the ignition and after 5 seconds switch it ON again.

Make sure NOT to start the car within the next 2 minutes. After that, try starting the engine

Thats what i did with mine,and it worked first time, both times. firstly when i put the ecu in the original car (as the ecu i had was not the original) and it also worked when i fitted the ecu into my golf, as i kept my original immo box and key.

hope this helps

[Andi 0]

Thanks. I'll give this a bash when. I install the kit.