VW Jetta reminds you if your left your sunroof open David Brown 5 years ago https://www.anyauto.com.au/wp-content/uploads/2019/08/BTW-3030-Aug-2.mp3?_=1 VW Jetta reminds you if you have left your sunroof open. Other cars will start the air conditioner early, will unlock as you approach or lock as you walk away.