can anybody help sat nav unit will not eject the disc any advise i will be grateful

I would certainly try disconnecting the battery for a while and trying again.

Here’s another thought one time my CD player in the car wouldn’t eject any of the discs I turned off the car and removed the fuse for the stereo started the car and while still running replaced the fuse it sorted it out immediately it may be worth a try for you.

cheers will give it ago soon as i get the chance

also try getting somebody to hold the eject button in while you reconnect the battery , it worked for me a couple of weeks ago when i had a similar issue . 2009 FL2 S now gone
2011 FL2 HSE AUTO
2012 FL2 XS AUTO
2000 Kawasaki er 5

Presumably there's actually a disc in the drive to eject? Hyundai Ioniq 5 Ultimate. The family car.
2009 Rimini Red SE TD4. Gone.
2006 Tonga Green i6 HSE. Gone.
Audi A5 convertible, my daily driver.
1972 Hillman Avenger GT, the project.

well the sat nav works and does not say insert disc so i guessing there is could be wrong first time owner so all new to me lol