My motorhome was a non starter recently called the RAC who discovered it was the grey mega fuse on top of the battery. As they did not carry the correct one it was replaced temporary till I purchased the correct one, this I have done now I have the engine management light on, all the time when the engine is running. In the book it says Injection System Failure, one of the causes is a flat battery but it starts easily. the dealer I bought it from said to take on a 20 to 30 minute run turn engine off then on and it should clear,but I'm worried that if it does more damage how would the warranty stand.