What version of DVD is this?

[Muufer]

I'm going to purchased a DVD navigation disk for my 2006 and I'm confused if its a gen 4 or 5. The disks on ebay shows north America U31 and the numbers are 86217-53021 and 464210-0791. Other disk on ebay show a number as 464210-0793. Is a U21 a gen 4? Is a U31 a gen 5? Can anyone shine some light on this subject?

[navguy]

Your 06MY Tundra is a GEN 4 navigation system, and the DVD map disc 86271-53021 is for GEN 5 systems only. Thus, it is not compatible.

If you want to buy a disc for your E7006 the DVD-ROM part number must be 86271-3304X. The higher the last digit(where the X is) the higher the version.

86271-3303X GEN 2/3
86271-4101X (07/08/09MY Avalon ONLY)
86271-3304X GEN 4
86271-5302X GEN 5
86271-1208X GEN 5X (Corolla, Matix and RAV4 ONLY)
86271-7301X GEN 6 (Venza)

[Muufer]

Looks like I already ordered the wrong disk for my E7006. Should of checked here first. It does appear to be working in my navigation unit. Not sure if all functions work yet though. Thank for the informaiton.

[jl-seagull]

Near as I can tell, the "U" means Tundra, the 1st number means the Generation of Nav system, and the 2nd number means the year of the disc.

So, U21 would be a Tundra Gen 4 6.1 disc
U22 would be a Gen 4 7.1
U32 would be a Gen 5 7.1
etc.