2005 Rover 75.260 V8

Dear Sirs Am posting this on behalf on my neighbour who does not have internet. The car concerned is a . When the car has been standing in the sun and the body heats up, the engine management light comes on and the car cannot be started until the body cools down. He says the cars computer does not have a *memory* in it to record any faults. Faults can only be analysed on a testing computer whilst it is happening, which makes it more difficult to determine what it is. Grateful for any suggestions as to what might be happening here. Thanks. Yours john kirby