[dеiтайожни]

The N2 also uses the VSS to increase accuracy...if you lose signal it will still have a good idea where you are, incase you can get lost in a tunnel I suppose. I never hooked my VSS in the h3, had it hooked up in my last vehicle though. I can't tell a difference. Nav functions properly, and I still get voice guidance. So must be only on the Z1...which sucks.