help needed

[spitfire06]

I wonder if someone could give some advice please.I have a defective abs sensor.Nine times out of ten this would be a simple job.However when I tried to remove the old sensor some clown had been
there before me and managed to round off the inside of the allen key bolt that holds on the sensor.So I was wondering if anybody had any ideas how to remove the old sensor.

[dan101smith]

Drill it out? Tack a bolt head onto what's left and use that to remove it?

[Mroad]

All depends what tools you have and the access to the screw.
Try hammering a tight fitting torx head socket bit into it and then undoing it, that usually works for me.

[roofer]

9 times out of 10, the sensor is seized in anyway, get the drill out.