puzzler

Recently acquired 2005 E320 W211 ...... here's a head-scratcher for you. In slow-moving traffic today. Late afternoon, drizzling and generally murky. Lights set to "Auto". A minute or two later, the headlights came on. After a time, windscreen wipers were also switched on, to...

My C32 has a very intermittent misfire, it can go for days without incident and then be a little bit lumpy at tick-over. All the plugs are fine and the only fault that came up on the computer was ignition coil pack on cylinder five and I've changed that with a brand new part from Mercedes...