I have had this problem intermittently for a couple few months. It also twice happened soon after I bought the car two years ago and was 'fixed' by the local Fiat main dealer for £30 each time. They said that both occasions it was caused by a 'loose connection'. I did enquire as to why I needed to pay twice for the same fault within a few weeks and they said because it was a different connector each time! You'd have thought for 30 quid, and now knowing where and how easily accessible the connectors are, that they would have bothered to check them all on the first occasion, but I suppose it has become a nice earner for Fiat to not do that. I am assuming that there are only two orange connectors. One under the front driver's seat and one under the front passenger seat?
Anyway, as I say, the beep started again a couple of months ago, then disappeared for a week or so for no logical reason, and now has been constant for about a month. I can get rid of the bleep temporarily by fiddling with the menu button in the first few minutes after starting the engine, but the red light remains and the 'red mist' descends followed by clouds of depression, feelings of hopelessness and despair at having to repeat this tedious routine several times a day. I was going to go back to Fiat and spend another £30 or so soon, but seeing the cheap fix on this forum I thought this would solve my problem and save me some money. Unfortunately, despite all the connectors appearing to be solidly in place and despite following the spray technique to the letter, the red light and the beep have not gone away.

I have gently twiddled and wiggled the wiring too, but all to no avail. I know that the problem is definitely not the passenger seat foam sensor thingy as the symptoms are not right for that. So, if its not a 'loose connection' in the orange whatsits and the spray hasn't fixed it either, is it worth carrying on with my life? I'm already depressed enough as it is, especially when I can't even get the same results from a can of contact cleaner as the rest of the world! I always seem to be the one for whom life does NOT do exactly as it says on the tin!

The thought of paying £100's for a new wiring loom is deeply disturbing for a man in my condition.

HELP!