I purchased a Majestic 135 in January 2017. I was having trouble with the radio not receiving DAB radio and in April my local Peugeot dealer replaced the unit. It is a unit built in the dash and is radio/sat nav/phone/media all in one unit. Last week I went to Tenby south Wales and I noticed when on the M4 at least twice the sat nav screen showed me off the motorway and in the midle of nowhere and instructions telling me to turn where there were no junctions. Also I noticed at almost every island junction the unit instructed me on screen and verbally to leave at junction and then re-enter motorway from the island junction. Has anyone else had this on the M4? I don't know if it can just be some sort of interference or does it need updating (after 4 months). The same thing happened on the return journey on the M4. Does anyone have any ideas what could be the cause of this?