Sat Nav playing up

[leonatlarge]

I recently bought an E 350 Coupe CDI 2011 with flat bottom steering wheel the sat Nav does nt seem to know where the car is it thinks I'm in Manchester when I live in Nottingham.And when driving it normally says I'm off road as it's so far out.
I doubt this will be an issue as I have a Mb warranty just was interested to know if anyone else has experienced this.

 

[Headhurts]

Yes I had this issue when car was around 3 months old, it was the GPS antenna all done under warranty.
Seems to be a common issue.