thanks for that but lol..... no contamination!
i was thinking more along the lines of a voltage surge, due to the great demand on electrical systems of many new vehicles.
which it may well be as i leave lights on when i turn off ignition to allow parking lights to operate. although usually voltage surges occur by starting the engine with headlights or auxiliary lamps on.
i know You can prevent voltage surges by starting the engine before turning on headlights etc...., and turning off the lamps before turning off the ignition.
but why have parking lights options if this is bad ?
just baffled as to why they lasting such a short period of time