are you connecting the ipad to the internet? If so how? I have tried a wifi only ipad mini connected to my phones hotspot but using maps for navigation was a no go2014 Pilot EX-L (no NAV/RES)
I'm just using an iPad mini (no 3.5mm jack). To mount it I created a wood piece with a shallow channel (router) to secure the bottom of my iPad and 2 rare earth magnets on to hold the top (using double stick tape and an angle bracket). I put a piece of metal between the case and the iPad. I'm running audio to the Pilot "aux jack" so I don't have a Bluetooth battle between my phone and the iPad. To get audio to the 3.5mm jack I purchased an Apple dock for $15 (ebay) and mounted behind the glove box (it's black and hold in place with a small piece of wood for the time - there was a small level piece of plastic there near the center of the Pilot for the dock to rest on). The dock has 3.5mm output. To get power/audio from the iPad to the dock I had to purchase a Lightning extension cable (connects the iPad to the "top" of the dock). The dock uses a regular Lightning cable and 3.5mm. I've had it mounted this way for ~2 years (just added the dock option about a month ago). Very secure, allows easy access to the camera and for tilting the iPad down when parked (or to remove if concerned about theft.
Hope this helps someone with their mounting solution.
Ematetek Extender Connector Cord Pass Video Audio Data and Charging - $9 (ebay)
iPad Dock - $15 (ebay)
other cords - normal Lightning cable (had), 3.5mm male-to-male stereo cable (had)