We were moving across country and I never sit in the back but seeing as I am the shortest person in our family now it only seems fair. We were looking at various attractions and on this cold, windy day I get into the van, turned on the seat warmer so I can thaw out and it lights up, then turns itself off after 5 seconds. Honestly, don't know how long it has been like that but that was the first time I needed it and it didn't work. We even took out the seat to make certain it was installed properly, still doesn't work.