Having problems with warning light on new Autosleeper Broadway based on Peugeot 130bhp MWB chassis. On the original test drive the dash display said "Hill Hold Assist Unavailable" followed by "ESP" and then yellow warning light. When the engine is turned off it clears itself but reappears after a few miles. The PDI carried out on the vehicle after the initial test drive apparantley showed no fault. I was assured that everything is OK but obviously this is not the case! Any ideas what the problem might be before I return the vehicle to the Dealer?