I have a Denso touch screen system No 462100-8671 Land Rover part No YIB500090 fitted to my RR. Getting errors "not a map DVD". "Dvd read error" not ejecting dvd , I am looking for someone who repairs them or someone who has one or can anyone tell me if this is the only LR part no that fits my vehicle 07 Vogue SE Java Black 3.6 TDV8
Black Leather heated/ cooled seats
Piano black trim deployable side steps
L405 Autiobiography 2017
Santorini Black with black pack
13 L405 4.4 Autobiography

You might want to check that its not your disk that's faulty.
I had same issues, the disk looked perfect, but gave the errors. Bought a new 2012 disk and its been fine since - worth a try before getting the unit looked at.

Checked all my discs I have 3 discs all come up with the same faults  07 Vogue SE Java Black 3.6 TDV8
Black Leather heated/ cooled seats
Piano black trim deployable side steps
L405 Autiobiography 2017
Santorini Black with black pack
13 L405 4.4 Autobiography

Andy in Birmingham who repairs the older BMW Satnav's is now doing the touchscreen ones. He lists on ebay under seller id navtvman - do a search for Range Rover mk4 satnav repairs on eBay and you'll find his number (some of his listings state he does the touchscreen) - his service is very good and he'll tell you up front if he can fix it Current Fleet:-
2018 Discovery 5 3.0 HSE
2021 Ford Ranger Wildtrack
2019 Ford Mustang Bullitt 5.0 V8
1993 Defender 90 200TDI Pickup

Gone - not forgotten
2016 L405 4.4 SDV8 Vogue SE
2012 L322 4.4 Westminster
2004 L322 4.4 V8 Autobiography LE
2000 P38 RR 4.0 HSE (ex Clarkson test car)

Thank you just placed an order with him.  07 Vogue SE Java Black 3.6 TDV8
Black Leather heated/ cooled seats
Piano black trim deployable side steps
L405 Autiobiography 2017
Santorini Black with black pack
13 L405 4.4 Autobiography

Received my replacement unit from Andy first class service and advice, unit fitted and working, I now have no excuse for getting lost. 07 Vogue SE Java Black 3.6 TDV8
Black Leather heated/ cooled seats
Piano black trim deployable side steps
L405 Autiobiography 2017
Santorini Black with black pack
13 L405 4.4 Autobiography