Eco stop start?

http://www.2008ownersclub.co.uk/forum/stop-start-stopped_topic912.html#.VrNr_eZy03E

http://www.justanswer.co.uk/peugeot/8ycst-2012-peugeot-508-sw-allure-stop-start.html

http://www.autoeurope.com/peugeot-fleet/documents/508.pdf

http://www.peugeotforums.com/forums/508-76/just-picked-up-508-eco-question-31155/

HTH
February 2016