Hi im brand new to these forums. I just purchased a scion two weeks ago and love it to death. It seems though that when I turn on the lights the navigation works diffrent then when they are off. The arrow seems to jump around alot and not be correct, kinda jumps ahead abit then goes back a bit and then jumps a bit foward. When driving even during the day it does this. It also will just keep going straight sometimes when I turn or go completely of course. It never does this with the lights of though. I thought maybe someone who had the same system could tell me if the stock nav system just does this or if I have a faulty one. Thanks...

 

Hmm, sounds strange. Not that I have a ton of night time (or lights on) nav driving, but I have not noticed this with my system at all. Seems to work fairly well anytime.

 

Its actually really bad, today it was raining a bit so I turned the lights on. Arrow was pointed sidaways going of the road then back to th road, then off the road then back on the road. Im pretty sure something is messed up. I also noticed buff marks on the top of the roof. I guess ill have to go up there tommorrow and see if these things can be fixed. Hopefully they wont give me the run around.