It will almost definitely be the battery. The stop start system requires a good voltage which an ageing battery struggles to maintain. When this happens the stop start system will be disabled. If you have a multi meter you could check the voltage of the battery after it has been left overnight and before you start the vehicle. If the voltage is 12.4 or less it could well be the battery. I had the same issue on my Ypsilon and a new battery resolved it.
Hi. I have a 2013 ypsillon and the stop start has never worked. Every morning when I drive to work the stop start unavailable light comes on at exactly the same spor along my journey about 2 miles from home. Has anyone experienced anything similar.
Addypops got a reaction from Mikey in Stop Start Problem