Yes the stilo is no stranger to the dreaded sensor glitch ..so here is an article to help you to understand some thing about sensors..

http://www.aa1car.com/library/1999/cm69910.htm

I haven\'t had it since I uprated my battery a few weeks ago. Have heard that getting a higher rated battery for the Stilo can solve many of the electrical gremlins that crop up, so hopefully it\'ll have done the trick.

For reference, I got the Numax 096... http://www.tayna.co.uk/096-Numax-Car-Battery-P1012.html