Cruise Control DIY

I got there .. Cruise control fitted DIY with VAGCOM to activate on Cupra Tdi

Used Erwin to make sure of wiring .. but it is all doable .. the biggest problem I had was getting the crimps/terminals to insert in the plugs. Wurth sold me some as this is who the dealers/aftermarket buy their crimps from.

Anyone want to know.. or is this old news?

.. and how do you get the instrument panel out of these cars .. if you could do that then maybe you could do a totally splice free job .. need to get to the big multi connectors at the bulkhead from the inside .. you cannot get to this internally from on the outside at the windscreen wipers unlike some Golfs. I spliced to the white ECU here and then put the wire through the spare empty socket. Got power from the right fuse off the back of the fuse board by a splice .. the rest is plug and play .. and if you could get to the back of the bulkhead connector you would get the ECU wire plug in (need to ID the crimp first..).. and maybe that is where the fuse board feed is.. looks like it might be.

Issues... remove the light switch from the panel before you pull the panel off by removing fuse board on dash end .. I managed to break the light switch .. and the panel over the wipers below the windscreen is a tricky bit to get off .. well more tiresome as you have to put bonnet up and down 3-4 times to make sure it is right.

Connector dealers/vans = www.wurth.co.uk/contact.php
Stalk connector = 0558-190-22
Central control connector = 0558-190-13
Need new double stalk
Need brown XS3 plug

Fabia uses 2 part Golf stalk and it does have a brake switch module that it wires through that Ibiza does not. Not sure why petrols should be much different ... the central controller does most of the work and the wire to the ECU is just a constant rpm line I am guessing.

DIY cruise costs;

Stalk is about £65-70
Brown XS3 Connector 6Q0 937 702A £2-3
Connectors inserts .. well about £15-20 for enough for 3-4 cars.. need 2 types from Wurth;
Stalk connector inserts = 0558-190-22
Central control connector = 0558-190-13
.. might need 2 other types if you can find out how to get to them and what they are.. see splicing below..
5m of thin 0.35mm wire from Maplin £5 or so
few bits of insulating tape to splice in 2 places.. (unless you take instrument panel out and maybe dash
.. access to VAG-Com .. beer or postage

So about £100



... if you do not break ;
Light switch £65 odd
Trim between bonnet and windscreen £12
.. but then there is the satisfaction of beating the system priceless


http://www.tigerstyle.co.uk/poloforum/viewtopic.php?t=10966
http://www.fabia-vrs.com/cruise.htm .. but for 2 part stalk not our 1 part stalk and this means different connectors behind stalk.

http://home.arcor.de/chris_kern/GRA.zip = this doc for Polo which is same stalk but has an extra connector in the wiring

http://www.christiantena.pwp.blueyonder.co.uk/motor/vag/tdi/ccs.html = Mk3 Golf for more ideas but their steering wheel is slightly different to take off.

There is a Cupra site somewhere .. cannot find it/remember


Need a wiring diagram really but it is only 5 wires connecting 4 sites. PM?

White wire at ECU = T121/38 or T80/24 or T121/14 or T121/28 or T121/38
(this depends on your ECU &/ engine type but T121/14 is Diesel and is white)
Power from Fuse 18 on dash end
Brown XS3 at control module under dash = T6w
Stalk = T41/26 to T41/31
All the connectors have numbers on them if you look carefully

Wiring =
T6w/2 = T41/27
T6w/3 = T41/26 + T41/29 + white ECU
T6w/5 = T41/31
T6w/6 = T41/30
T41/28 = fuse 18


And give airbag 30 secs to power down after taking battery off..

VAG-Com => engine (01), => Login, enter 11463.. note you need to reboot to see the cruise function otherwise it logs an error code if you enable and recheck for errors.

Yeah halfway between Aberdeen and Dundee .. centre of the universe!

.. must be about 2 folk in 100 miles who want this.

And fitting time .. I guess if I knocked up a wiring loom first it could be done.. (as one of those Mk4 Golf sites had done) but lots of tricky bits of plastic to take off, break and generally make a mess of .. these cars are designed for one way.. assembly and disposal... repair did not come into the designer's mind... might do it in an hour if you had the loom and motored on .. but it really is a 3-4 hour messy job for the inexperiance in the art but second time would be relatively easy.