On the way home visiting friends tonight, I had a guy behind me flashing his lights. After 5 mins or so I pulled over to see what the guy was flashing for. He said my central brake light was constantly on. 2 mins after, the glow plug warning light comes on. I pulled over, turned off the engine for a think! Started the engine with no loss of power, no rough running so I drove back home for an investigation. Had a quick look at the fuses, fine, then mucking about with the lights before I looked on here. I've seen people have had this fault before with the brake lights coming up and ecu warning flashing. Could it be the same problem, ie the brake pedal switch? Anything else?