Can't find anything on here about this, so sorry in advance if I missed the post. I'm having an issue where the welcome mat and approach lighting is going on and off constantly if the key fob is within communication distance to the car. So, if the car is in the garage and the keys are in the kitchen, the lights sometimes continually go on and off. This doesn't always happen, but I noticed it this morning and apparently it had been doing this all night long. I suspect that this happened a few months ago as well as my battery was completely depleted and the dealer was unable to find the cause.