Have an intermittent problem with low brake fluid warning. I have a 1.2 Lounge 2013 17,000miles. April this year they put in an electrical part.(sorry forgotten what?) Then problem occurred again in August this year. Fiat Garage/workshop then put in a new Sensor. Then two weeks ago same problem brake fluid warning and audible warning. Fiat suggest that I let them have my car for four days and they will plug it into their computer to ascertain the problem. Can they be serious???! And they suggest that I open up a case with Fiat. I cannot understand why after changing two electrical parts, and I pointed out comment from Forum Member re rubber on the inside of the cap falling down and interfering with the float etc.as a possible reason for the problem. Any thoughts, please.