Spotage 2017 GT. Today at the traffic light gives gas and there is no reaction - nothing. Reverse works as usual and also in neutral. Mode D The gas is unresponsive neither gear shifting nor traveling. No fault light. Passes a little reverse to the place with a manual name gradient, slopes slightly and combines manually to two and travels to the house locked on two. The fault stops again. Disconnecting a battery does not help. No alert, no light bulb. Anyone come across ..? Familiar ..? Known fault ..?