Mod: Navigation Hack allowed passenger use GPS while the car moving.

Hey guys I just finally HACK my navigation (GPS) system, And I would like to share it with you..

This mod give free option to PASSENGER use GPS while car moving.

Very Important: If you decide to do it, on your own risk and responsibility. I cannot be held responsible for any damages or harm resulting from that MOD.. Enjoy!!



so..
Here is very easy steps to do that..

* Tacoma Vehicle DIAGRAM with added (BLACK) switch.
-Turn OFF the switch, passenger be able to use NAV (GPS) while car in motion,
Then when NAV (GPS) ready to navigate turn it back (the switch) to ON position.
*otherwise GPS-signal losing the following arrow on the map and recalculating every intersection.










* Just CUT that (Purple/White) wire and add ON/OFF switch.

I used "Rocker DC" Switch.


Enjoy and thanks for watching.
-Dmitry.

 

interesting

 

hmm.. whos next?

 

Holy crap, it's really that easy?

 

Super Easy!!
but I've study the scheme for a couple months.

 

Lol thanks for the mod man! It beats me having to study the stupid thing!

 

i've never removed my radio before. is the picture of the screws behind the air conditioning panel?

 

yes. click on my name and look up mod day 4.. a thread I started on replacing this head unit

 

here it is

http://www.tacomaworld.com/forum/2n...alling-2014-oem-radio-into-2013-pictures.html

 

thanks!

 

Subscribed.

 

its just break/park sensor same as been on toyota and lexus for at least 10 years i know of, as long as its thinks your in park or have emergency break on it allows, you can even push e-break just a tad on most to unlock. on toyotas i ripped nav out and put the lexus one so not sure on the new ones which wire it is but if you supply ground to the sensor wire it does same thing, unless they changes something i do not know about


cheers,
disco

 

* Just CUT that (Purple/White) wire and we DONE.

And if you're afraid of cutting that wire. I recommend just removing the pin and isolating it with a tape or something. So you can always put it back.

 

This wire has more than one function

1. Once vehicle speed is over 3mph, certain HU functions are locked out
2. It is an input to GPS location (along with satellite signal). Obviously the satellite signal is what provides the GPS info, but the speed signal is used.

Cutting this wire will impact GPS tracking accuracy in some instances. By cutting this wire, the HU will now think vehicle is going under 3 mph. This may impact tracking on the GPS screen. Vehicle may appear "off-route" or other inaccuracies.

Ideally you would want to route it through a switch, turn it off, turn it on. Also it's not a constant signal, it is a "pulse".

"Ask me how I know"....

The wiring schematics show this connection. For anyone doing anything electrical, you should be referencing these schematics. Pay your 2 day subscription fee, and download as many as you want....

 

Parking brake input is not present on Tacoma 2013/14 Head Units. Cannot speak for other years. The only vehicle input that controls HU lockout is the SPD wire. Like the OP, I reviewed all the wiring diagrams before upgrading my 2013 HU to a 2014 HU. I have no connection to my parking brake. I can provide the pinout and wires for anyone interested. Actually, it is another post already. The SVG diagrams should really be made available somewhere for others to view. Might be some Toyota copyright infringement issues, though.

 

I snipped the wire and the bypass worked but as the poster mentions above, the gps thinks I am still at home and not tracking
My location. Can I strip the wire and tape it back together?

 

Yes, just tape it back together. Solder and heat shrink would be better.

I cannot speak to every Toyota NAV HU, or really to anything beyond the 2014 Nav HU I have, but the SPD signal wire is used in tracking. What exactly the impact is will depend on your unit...

On your unit, it seems the GPS now thought you were stationary (or below 3mph, anyway).

 

That sucks just when I was thinking of cutting my wire.

 

Actually, it is pretty great. What would suck would be if you had already cut it.

I imagine there will be people that don't read past the OP and they will be pissed.

 

I usually wait for others to test first but this is the mod i have been waiting for. even after taping it back together, my location seems to be off by 100 ft