Difficulty starting / no crank

[clueless1]

2001 986S was sitting for 6 months while I was travelling. I tried to start it and ran into trouble. 

The dash lights come on fine. I do not hear the starter at all. There is NO clicking as I would expect from a dead battery for example and no overt cranking sound.

When trying to start instead of engine turning I hear an unusual low tone that seems to be coming from the right/passenger side front wheel area and feel a slight vibration when trying to turn the ignition.

When I listen at back of car I hear nothing at all from starter area. 

I tried a brand new battery so that is ruled out as a cause 

 

Fwiw Immobilizer was prophylactically pleased in Tupperware a while (and if I remember correctly immobilizer issue presents as cranking but no start, unlike here where I have no crank.

Any ideas / troubleshooting? Thanks.

[Loren]

#1 cause is the clutch microswitch.

[clueless1]

Right you are.  
 

Thanks for this.