Take your car to which ever service centre you want, doesn't have to be the dealer you bought it from. Your warranty is still covered provided the service centre is endorsed by the local association, in Vic it's VACC. My last Nissan had the first two services at a local dealer, different to the one I purchased it from. On the second service they missed a wheel issue so I went to a private trusted mechanic for the rest of the warranty, he knows his diesels and 4WD's. Never had an issue.
My nephew regularly had his Navarra serviced by the dealer he purchased it new from, had a major issue and they didn't cover it under warranty $8000 out of pocket. Said it was user error and driven in 4WD on sealed roads, which he naturally denied but how do you prove it.
Cheers