Try which ever one you feel is best for you. These are the two that I have
found so far. I am still trying to find more if there are any. I would
suggest using the second one as it seems to me to be a better bypass.
This is the first bypass that we found. We will keep trying to find a better
one, but this does work if you follow these instructions correctly. Keep the
Parking brake wire grounded all the time. Put a switch on the GPS Antenna,
How? Tools u need is a solder gun, solder and splitters. Use a switch on GPS
Ant. It’s a coaxial Antenna (Power on the inside and Ground is the outside
shield) Put switch on the power shield wire. It’s in the center of the wire.
It works. When doing so, try not to break the out side shield of the wire
(make sure the outside layer of the coaxial antenna isn’t disturbed).Try it
When installing the unit. Plug up the GPS Antenna to the unit in order for
it to update your location, and then switch off the Antenna and drive. The
Only disadvantage about Bypass is that you must switch on the GPS Antenna
when u need the navigation. Unit doesn't take long to figure out were you
are at. 3 seconds at the most.
Here is the second bypass.
The only mod I have is a toggle switch on the e-brake.
1) Power the vehicle and unit with e-brake on and the vehicle in park.
2) hit the reset button on the lower left screen panel with a pen.
3) Let the unit reboot.
4) I have my unit to output to a rear monitor - I turn on the monitor and
see the front screen.
5) Start a DVD and let it play for a few minutes while still in park and
e-brake on.
6) Power off the car and turn the e-brake switch off.
7) Wait a few minutes before turning the car and unit back on.
8.) Start the car with e-brake off.
9) At no point should you see the message that the parking brake is properly
connected, if so repeat from #1.
10) I turn my rear monitor back on before driving again.
11) Start driving and start DVD where it left off.
12) Flip the e-brake switch while driving.
13) Enjoy full video and NAV functions that won't go out so far - I'm up to
150 miles on my vehicle and watched video for an hour.
14) Each time you start the vehicle follow from #8.
15) If you forget to start from #8 and startup/drive with the e-brake on it
will detect an improper e-brake connection. Once this happens, you have to
restart from #1.
This has yet to fail for me and my car states it's fully calibrated.
1. When I've reset the unit one time I also pushed the "restore to factory
settings" button, which reset all calibrations back to zero. However, for
the last now, 162.5 miles, I haven't reset or restored factory settings
without any problems.
2. Yes, I don't flip the e-brake until after I'm moving up past say 25 miles
or so. Until then, I have no use of extra nav or video functions. I will
flip the switch while stationed in park if I need to. That doesn't seem to
affect the unit detecting anything different.
3. Yes, my rear monitor is only connected to the Z2 through RCA cables. I
don't enable or disable anything on the Z2.
4. Once I'm moving with the e-brake on, I can fully watch video or perform
all NAV functions. I can flip through all menus, back and forth, switch
sources, or do whatever without any problems. The only thing is "right
after" you hit the reset button and are driving, while it initially
calibrates, the NAV isn't very accurate with the e-brake on, it will
"freeze" your current location, you can switch to dvd or audio, then back to
map and your current position is updated. Mine however, is accurate as I
drive now with the e-brake engaged.
Questions and answers from people who have tried this…
1. By E-brake switch do you mean you have it hooked up to the e-brake or
just a switch emulating the e-brake? Like a toggle switch...
2. Do we have to disconnect the VSS wire permanently and do we also
have to reset our z2 every time we start our cars if we want to watch DVD?
Answers
1. A toggle switch. One side to the light green parking brake wire, the
other to ground
2. Let me add in a quick reference note…
1. You have to use only an e-brake toggle
2. The VSS must be completely disconnected
3. You only need to reset the unit once with the e-brake on and vehicle
parked...but you must start the vehicle from then on with the e-brake off
and switch it on only after the unit is fully booted. If you get the
parking brake error, then start again from #1 and only turn the e-brake on
when video starts to play (initially no video) and moving >25mph to be
sure. After you turn on the switch, the video will pop on and all NAV will
work as long as the vehicle is running.
4. Once you turn the car off, turn the e-brake switch off and always start
the vehicle with it off.
5. If you ever get the parking brake error, you did something different or
wrong and will have to reset the unit and start back at #3. Otherwise, you
shouldn't ever have to reset the unit again.
6. The only nuisance is the flipping of the e-brake
