so this is button illumination working on the Polo Scirocco 1K8 wheel with 1K8 switches (no cruise)
over the last 48 ish hours i ordered a set of buttons for my wheel which i thought would fit, but as i didn't fully check the PR numbers in ETKA i ended up with a smaller set of buttons for my wheel, not good. returned them to TPS and as i was ordering yet another set that were now more expensive they exchanged them.
last night i was at work and had 12 hours to kill and my original set of buttons with me, i started tracing out the illumination circuit on the switches and decided just to give it a go of powering it up directly with 12v.
I won't go on anymore other to say that i tried feeding the 12v to the illumination pin of the DSG paddle but bizarrely only lit up one set of switches even though i tried both sides of DSG paddle.
I found a point i could solder a wire too i tried this with 12v on it and all buttons came on.
so now i'm stuck with a set of switches on back order from TPS at a cost of 218 quid just to see if i could illuminate them.
thankfully TPS refunded (which i didn't think they did) the lot so today i'm happy.
The Issue for me is i
DON'T WANT 5 or 7 extra buttons (adaptive/standard cruise control) on my wheel just to get them to work with the CH module using the LIN Bus 2 settings, i'd rather have the standard buttons and either live with them not lighting or do my mod which you'll see some pics of soon.
we are really lucky in the MK5 that the power for the switches is ignition fed (terminal 15) so 12v is applied only when ignition is on, we can use this to power the led circuit inside the switches for it to work.
oh and one other thing if you want the extra buttons with cruise so it works out the box then as Eddie already said 6C0 959 442 C will get you buttons with standard cruise 6C0 959 442 D with adaptive cruise these cruise buttons
will not work in your MK5 but will light up from the CH module, all the other standard buttons will work as long as you have the CH control module.
if you have buttons 1K8 959 442 (these light up red NOT white as i previously thought) then follow this to get them to light up
remove the switches from there holders T8 torx, remove the back cover of the switch that the black plug goes in 5 pointed safety torx (jam the T8 in there)
now look for this terminal
this is common POSITIVE they put the resistors in the negative (cathode) side of the LED this common positive powers all leds on both switches.
Annoyingly i could only find somewhere on the front of the switch so be very careful when putting back together incase you rip the copper track off the board as you'll be bending the wire back round the circuit board.
so put the circuit board back together and route the tiny wire to here
solder to terminal 2 the +12v, now when you turn the key all the buttons will light up including in the day time.
test before putting it all back together
any questions feel free to ask
