Map corruption
The unit also then keeps shutting down, or if trying to navigate to a postcode displays 'Internal Search Error'
The map is installed to an SD card. I have reinstalled once, but the problem has now come back again.
See images below for an example of the corruption. Any suggestions on how I can fix this?


Answers
However, I would suggest that you do a Drum-Roll reset. This is where you press & hold the On/Off Button, until it starts to switch back on & you hear a "Drum-Roll"! That has been known to clear up some "quirks"!
What Maps have you got installed & are they internal to the Device or are they on the SD Card?
What size & what make is your SD Card?
Regards,
John-Jay
I had tried the reset several times, which would solve the problem for the short term (a day or so), but it would then come back.
The SD card is a Kingston 16GB card, class 10. I had the maps installed on there, as the map file was too large for the internal storage when I updated. I was using the full Europe Map with buildings.
I have now updated maps again, and this time found there was a file small enough to fit back on the internal memory (Europe Western Zone) so I have removed the SD card and so far seems to be going ok.