help

[nobelz66]

does any one know if there is a fuse for the brake lights ref :alham 05 130 tdi had a diog done fault came up as brake switch changed switch still no brake lights switch looks to be installed correctly

[Crasher]

How did you install the switch (pedal up or down) and where did the switch come from?

[nobelz66]

hi it came from ebay made by topran german i followed the instructions fully extend switch hold pedal up insert switch and turn clockwise is this correct

[Crasher]

I only fit genuine VAG switches and these are just inserted and twisted with the pedal at rest, they used to be pedal depressed, twist and release, do that now and they break instantly. The genuine part number is 1C0 945 511 A RDW but I don’t have a Topran number for that switch. Toprans reference says their number is 108 892 but that cross references to a 1J0 945 511 B, C or D only which in VW’s system changed to an E then a 1C0 945 511 A RDW, all very confusing.

[nobelz66]

thanks for your help crasher so maybee i could of installed it incorrectly would you know which wires to bridge to check if ive damaged the switch there are four

[Crasher]

The red/yellow to pin 1 is the power feed from fuse 15 and the black/red to pin 4 is the output to the brake lights and to the ECU. Pin 3 is the second circuit feed to the ECU with pin 2 being its power feed. The switch is classed as two separate components, F and F47 with F being the brake light side. The feed from pin 4 on the black/red goes to the multifunction control unit and then out to the brake lights. If you have VCDS you can watch the operation of the F and F47 in one of the ABS measuring blocks, I can’t remember which one though.

[nobelz66]

thanks crasher your a star i checked all the fuses yesterday and they all looked fine but i again checked 15 as you said and there was a hairline break that i never noticed replaced it all lights working many thanks for your kind and expert help