My satnav has been acting funny this week... It was all pulled out last Sunday when @Simes helped me fit the grom kit and wire in the dashcam... both of which appear to be working exactly as expected. But the satnav itself is doing some odd things. It randomly seems to lose it's position... I can be driving along and it's following the road I'm on perfectly... then it goes of somewhere else and I don't know how or when it happens because I'm not watching the screen. It first happened when I was driving home on Sunday from Simes, but I appeared to be on what I thought was a new section of road and assumed the map wasn't up to date, as I was using my phone navigation at the time (driving, easier to use the OK Google than stop). It then leaves these little blue dots across the map as it randomly wanders across open spaces and if I'm lucky it may jump back to the right position at some random point. The problem is... it's not even following my direction correctly. I made a 90º turn at a roundabout and the icon on the map rotates 180º and starts going back on itself. Now here's the weird thing... I went into the diagnostic menu and checked everything... all tests came back green, it's connecting to at least 4-6 satellites. Every check I made says all systems are green or it's telling me OK... but it's also telling me VSA is off when it's on (the light on the dash is off) I've tried resetting the cars position. Today I was trying it as after a 3 mile round trip it said I was 4-5 miles away in the next town over. I go into the diagnostics menus, vehicle position... but cannot move the icon. I seem to recall that in the past I could. I'm also getting the DVD error a lot, in the past it's happened once or twice a month... On Weds during a 25 mile drive home, I reset the dvd 5 times and it still gave me the error. The following day it was fine, as it's been on the 5 or 6 times it's been used since. There seems to be some correlation to the amount of time it takes the drive to start up... today for example the OK button appears on screen within 30 seconds of starting the car... on other occasions it's taken 5-10 mins. Do you think there are cables loose in the back that could cause this? Is the DVD unit on it's last legs? Tomorrow I might try and pull it all apart and check all connections. How easy is it to strip down the drive, clean up the lens and grease up the sliders that the lens mechanism sits on... I've done it on a home stereo before, but never on something so compact like a car DVD drive.