Adding custom topo maps to navigation system

Has anyone tried adding custom topo maps (shape files) to the factory navigation system or know what format maps the system uses. I contacted Garmin and they had no idea if it could be done. Any help would be appreciated.

 

I seem to remember this question came up once before and the consensus was that it couldn't be done. I can't find the thread though, so it's possible I imagined the whole thing.

 

Can't be done until Toyota open up the entune API. I also don't believe Toyota use garmin data on entune headunits.
The next generation of entune, it should be possible from what I have read, but have no idea when the Tacoma will get that, and I doubt they will upgrade ours to the latest software, since I think its also a hardware change.

 

Cheap TabE 8in+Gaia GPS app(pro)+Hondo Garage unholie setup is bulletproof

 

Needs more screens visible from driver's seat.

 

Should see mine. I have 2 dash mounts.

 

Wait till I get my full time rear camera going. I'm thinking of adding a 15in for HBO also

 

Here is a quick pic in the garage, there are some pics floating around, little sqeeze for phone, big sqeeze for tablet.

 

Doesn’t use shapefiles.
It’s a vector image cache.

If they unlocked it and if it was running garmin software you might be able to load the topo imagery files like a gps. I doubt they will though.