the red warning light above the neutral light on my GTR flashed a couple of time's, there was no F1 message on the display,i was heading off to peterborough from chichester,i always keep my mobile phone & the fob in separate pocket's,the light flashed on a couple of occasions,at 1st i was a little bothered about.i noticed my mobile was switched on.after turning the phone OFF the warning light never appeared again.on another occasion i had the mobile phone switched on in the same pocket as the fob & the warning light was repeatedly flashing, i pulled over,switched the phone off & put them in different pocket's,the warning light never appeared again on that ride i was concerned as i was 200 mile's away from home.