Hi there, recently bought a very 2nd hand 307 wagon and have notced that the gear display on the dash shows an S then a * and blanks out and the car loses power. Not completely, but a noticeable lose of power. If I stopped the engine, then restart, it’s back to normal. Is this a safety mode and could it be as simple as replacing faulty electric valves? I would really appreciate any help. Cheers, VMCD.