Evening, everybody! The automobile in issue is a sedan model year 2003 E55, as stated in the headline. The light will sometimes turn on, but it will never remain on for any length of time. Is it as simple as removing the panel and the switch, and if it doesn't work, maybe some electrical spray? I have an upcoming mot, and I'm guessing that I won't pass if the light doesn't turn on when I activate it. When the ignition is turned on, the light will constantly turn on, but it will turn off when the engine is started. Many thanks in advance for any suggestions you may have.