Hello Volvo driver, in the last few days (almost) every start in the BC the message “Glow lamp defective” appears. So get out and knock on the rear light on the right side of the lamp and the light bulb glows again. Sometimes a very gentle knocking on it is enough, sometimes he wants it something more, the Masochist Woran lies? The bulb is not defective, it is also firmly in the socket (I think at least). I can’t imagine a cable break, since the knocking on the rear light never and never puts the cables in motion. That may be all, but when people watch how to leave their car, get out afterwards and beat against the rear light that is a bit embarrassing and you reap funny looks I don’t know if my ride has already wondered why he is roaring after the start of the engine “ahh, Schei**, knocking out, hitting the rear car and then driving very happy……. Ciao, Eric