Do Renault scenics have a sensor on there windscreen wipers as mine keep stopping?

Yes, many Renault Scenics are equipped with a rain sensor on the windscreen wipers that automatically adjusts wiper speed based on moisture detected on the glass. If your wipers keep stopping, it could indicate a malfunction in the sensor or a problem with the wiper motor. It's advisable to check the sensor for obstructions or damage, and if the issue persists, consult a mechanic for further diagnosis.