SVXdc

Has anyone tried not grounding the AVIC's parking brake wire (only ground the bypass wire)?

That wont work.

It definitely works on some of the previous models...

See this post.

Also this post and the one after it. Those two guys have Canadian Subaru STIs. Subaru Canada installed the AVIC-X9310BT as the "OEM" HU. The X9310 is functionally the same as the X930, except it does not include the RCA harness (where the bypass wire needs to go). Subaru's installers do connect the AVIC's parking brake lead to the car's parking brake signal. But these two owners did not modify that part (so things work even when they're moving with the parking brake off).

I've heard from other people who installed aftermarket AVICs, and who simply added the bypass wire and grounded that -- they did not connect the AVIC's brake wire to anything.

So just looking to see if that still works on the new Z150, X950. and X850 models.

Has anyone tried not grounding the AVIC's parking brake wire (only ground the bypass wire)?

Then either he didn't do it right or this is not the proper bypass [procedure].

Note that the procedure said to work for the X850 (which we think is the same for the Z150 and X950) is like the hack for the older 110, 120, and 920 models -- where the secret bypass pin is on the same row as the mute pin.

In the hack for the 130, 930, 140, and 940 models, the bypass pin is on the row above the mute pin. If your installer did your Z150 this way (out of recent habit), it would be wrong.

My installer tried the mod described above on my z150bh and no work.

 

It works for a very short time (maybe a mile) and then back to blocked. It's almost like the unit is using the GPS to track speed.

Recent Subaru OEM nav HUs (made by Fujitsu Ten) do that -- they use parking brake, vehicle speed signal (VSS), and GPS to detect motion. People tried bypassing by grounding the HU's brake input and adding a switch to interrupt the VSS wire. For some people, that worked. But for others, the HU still locked out features once moving more than a certain speed, obviously using GPS. We think a recent firmware update added the misfeature of using GPS for the lockout.

It pissed off one guy who wanted to use the HU while parked on a moving ferryboat. Half-jokingly, I suggested placing a "tin foil hat" on top of the dash, above the GPS antenna (located just below the thin plastic dash).

FYI bypass works for Z150BH...

[added quote to ntm's post, to help avert future noobiness]

If I remember correctly, my z150 RCA harness had no empty pins on the same row as the mute wire. The 3 empty pins were on the opposite row. One directly below the mute wire and then the two pins next to that one.

Can you take another look and compare it to the picture that totalauto posted?  I suspect yours looks identical.

The same install manual covers Z150, X950, X850, and X8510.  All of the rear connectors and harnesses are the same, except the X850 and X8510 do not have the HDMI port for Android devices, and the Z150 does not have a detachable faceplate.

If somehow yours is different, could you take a picture while you're at it? 

I think it may be solved.  See this thread: AVIC-X850BT bypass.  Thanks to totalauto !

(it's sometimes annoying that this site has separate subforums for the X and Z models -- you have to remember to search both for hacks that work on both lines, and it results in multiple threads covering the same issues).

If you call the mute wire pin 1, and the nearest red wire from an RCA jack pin 3, the vacant pin 2 is the bypass slot.  With that numbering scheme, pins 17-19 on the bottom row are also vacant.

As I mention in that X850 thread, the 30 and 40 models only need the bypass pin grounded, not the AVIC's parking brake lead.  Since you're using Metra's OnStar/Bose interface for your truck, It won't hurt for you to leave the parking brake wire connected as it is.  But for anyone else installing an AVIC, you don't need to bother with the HU's parking brake wire (just insulate it).  I suspect the 50 models will work the same way.

I've sent bypass wires to several people with the X930, X9310, Z130, X940, and Z140 models who have confirmed that they only needed to ground the bypass wire -- not the AVIC's parking brake wire.

So could someone try that with these new models?  That might make the p. brake warning message disappear completely.

@epsilonkore: That 2nd Amazon link is for a micro bypass device, which is a solid-state equivalent to a relay.  When you do the bypass hack we've been talking about here (either adding a new wire, or transplanting the AVIC's mute wire), you won't need a micro bypass (or a relay).

Anyone figure out the z150 e brake bypass? The harness is the same as the z140 but its flipped around so the mute wire is on the opposite side, half tempted to try 140 method but the boss wont let me take the chance!!

Can you post a picture of the AVIC-Z150BH's RCA harness?  How many pins are vacant?

This may narrow it down:  Unplug the RCA harness.  Use a digital voltmeter to check the DC voltage on each of those vacant pins (on the socket on the rear of the AVIC, with respect to ground).  Be careful not to short two pins with your meter probe.

If one is a secret bypass pin like previous models, you should see a positive voltage like +5V.  You might see that on more than one of the vacant pins, however.

The Z150 and X950 have gone back to a 32-pin connector for the RCA harness (like the Z110, Z120, and X920).  The 30 and 40 models had dropped down to a 24-pin connector.