Took delivery of my PHEV yesterday. Plugged it in about 3pm to charge the battery on cheap electricity starting at midnight so it was timed to start them. At 1am the car alarm went off. I managed to silence it using the fob but that was it, I couldn't open the car or do anything. The handbrake and start button were illuminated though. I opened it with the manual key and nothing completely dead.
Volkswagen Assist came out today to check it and it turns out that this is a known problem I wasn't advised of yesterday. If the charge cable is inserted in the car without charging taking place the canbus is live and drawing current from the 12v battery. The advice from the technician was to only plug the cable in when you are going to charge it and immediately charging is finished unplug the cable from the car. Allegedly there is a software fix due to come for this in the next few weeks that will need to be installed at the dealership it won't be an over the air update. Apparently I was unlucky that it happened on day 1 of ownership for some Tiguan owners it happens after 2-3 weeks and not to all PHEV MK3 Tiguan's!!!
I am not impressed with this as had I known the car could have stayed at the dealers until the software update was available.
Volkswagen Assist came out today to check it and it turns out that this is a known problem I wasn't advised of yesterday. If the charge cable is inserted in the car without charging taking place the canbus is live and drawing current from the 12v battery. The advice from the technician was to only plug the cable in when you are going to charge it and immediately charging is finished unplug the cable from the car. Allegedly there is a software fix due to come for this in the next few weeks that will need to be installed at the dealership it won't be an over the air update. Apparently I was unlucky that it happened on day 1 of ownership for some Tiguan owners it happens after 2-3 weeks and not to all PHEV MK3 Tiguan's!!!
I am not impressed with this as had I known the car could have stayed at the dealers until the software update was available.
