Dropped an allen key in engine bay
Whilst helping my Dad cleaning out the air filter in his Golf GT TDI 2007, I accidently dropped an allen key - oops! It fell straight to the bottom on the plastic undertray of the car. Had the torch out and cannot see the allen key anywhere. Started the engine and there's no rattling or anything.
Just wondering if we should be concerned that the allen key could jump up and cause any damage or anything? It was only a small 1.5mm key.
Help much appreciated,