Hi. I gave two cig lighters in my 2010 Touareg. Both light up around the edges so I would think they are getting some sort of power, but I purchased a car charger plug in and it won’t charge my iPhone X. I’ve tried several usb chargers of friends and the same. Someone told me only a Belkin would work in a Touareg. Anyone know if this is correct? Or could it be a fuse?