2004 V8 Touareg. Overall, car runs great. My brother has been using it for about 6 months. Yesterday, it would not start, or even crank. Based on searches & knowledge, this is what I have tried so far:
-Ran Vag Com for codes. Nothing relevant.
-Tried jumping it. Dash volts read higher, still wouldn't even crank.
-Bought a replacement ignition switch locally, since it seemed like it was not triggering the start function. No difference. Also, Vag Com Meas Blocks showed the car registering the start function when the key was turned.
-Checked every fuse we could find, including in battery compartment under the seat.
-Tried taking it out of park, to neutral & various gears, in case it was the gear selector sensor or something.
-Brake switch is new-ish, and brake lights work fine, and dash light saying to push the brake goes off once you do, and allows you out of park.
I am now stumped. The starter never engages, no cranking or clicking or anything. Is it likely a bad starter? Or (hopefully not) a bad Kessy module? The lock & unlock functions are working, and the key in the ignition will unlock the steering column & shifter, etc.
What should I do to troubleshoot further? Looks like the starter job is a huge pain to do, dropping subframe, jacking motor up, and obviously needs a lift, etc. And modules are expensive, and likely need coding..