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Old 06-03-2018, 11:49 PM   #1
lanz0r
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Default 18' WRX no audio from front speakers

I installed a Pioneer MVH-1400NEX in my 2018 WRX (Non-HK) today and everything seemed to power on fine except I am not getting any sound from my front speakers.

I tried flipping front and rear connections to see if maybe it was my head unit but there was still no audio when I put the rear speaker wires to my front speakers. I re-installed my stock HU and I got audio from all of the speakers, so I am not sure what I could be doing wrong.

Any help is appreciated
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Old 06-04-2018, 04:42 AM   #2
lanz0r
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Issue was caused due to a disconnected telematics unit, apparently the front speakers run through there.
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Old 06-04-2018, 12:35 PM   #3
phd12v
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Quote:
Originally Posted by lanz0r View Post
Issue was caused due to a disconnected telematics unit, apparently the front speakers run through there.
yes they do.

In addition i was playing around with mine and since im going full amplification on front stage, i will have way to much power going through the unit itself, so what i did for my application is i moved the REAR input to the input section of the telematics unit, then rewired my rear speakers to the OUTPUT of the telematics unit.

so why did i do this??

since we integrate with the Starlink with my integration module ( Maestro RR )
i wanted to have it still available someway without it effecting my front speakers. Since i have zero plans to use my rear speakers at all, i decided to use the factory ones as the speakers for the STARLINK system only. I will have approximately 800 watts of true power running strictly to the front stage ( 3way all active) so keeping the telelmatice in line on the front speakers isnt an option for me.

If that makes sense or not. I tested it last night and no errors with starlink and it did in fact dial out and i was able to hear the starlink system through the rear.
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Old 06-05-2018, 04:25 AM   #4
lanz0r
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I was able to connect the two grey wires to the telematics and relocate it (I just stuffed it behind the HVAC controls) and I left the antenna wires disconnected to allow for more room.

Speakers work great, now I have to figure out why my reverse camera is not working! I only get a black screen when I go into reverse.
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Old 07-09-2018, 02:30 PM   #5
reid-o
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Quote:
Originally Posted by lanz0r View Post
I was able to connect the two grey wires to the telematics and relocate it (I just stuffed it behind the HVAC controls) and I left the antenna wires disconnected to allow for more room.

Speakers work great, now I have to figure out why my reverse camera is not working! I only get a black screen when I go into reverse.
Do you have a pic of this "stuffing?" I had the same issue and figured it was due to my removal of the starlink module. I'm running the scosche front plate. I don't see a way to stuff the starlink module in there. It's just too tight.
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Old 07-11-2018, 01:45 AM   #6
lanz0r
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Quote:
Originally Posted by reid-o View Post
Do you have a pic of this "stuffing?" I had the same issue and figured it was due to my removal of the starlink module. I'm running the scosche front plate. I don't see a way to stuff the starlink module in there. It's just too tight.
I only plugged in the larger connectors and not the antenna/gps cables to allow me to wiggle it in. Currently it sits a few inches under my new head unit held down by some factory cables.

Sorry I donít have any pics, just plug in the two large connectors and you should be able to play with it enough.
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Old 07-11-2018, 11:18 AM   #7
phd12v
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i unplugged my starlink completely, then pushed it down behind the lower mounting tabs then replugged it back in afterwards. So it sits vertically in the dash now and i have plenty of room for the harnesses for the radio, also of note i fully amplified my front stage, and im not using the rear speaker leads at all in my system. So i took the 6 pin harness and cut the front speaker lead output from the starlink, and wired it to my rear speakers now. All my front speakers (3 way active on both sides) have their own speaker leads. when i hit the starlink button now my rear speakers are dedicated for starlink communication only. If that makes any sense
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Old 07-12-2018, 02:47 AM   #8
CXVninja84
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Although I don't think it's recommended, the telematics unit can be eliminated and the speaker connections bypassed using an adapter. This will eliminate the SOS functions that the telematics unit provides but I guess it's cleaner than 'stuffing it in'.
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Old 07-12-2018, 10:12 AM   #9
phd12v
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Quote:
Originally Posted by CXVninja84 View Post
Although I don't think it's recommended, the telematics unit can be eliminated and the speaker connections bypassed using an adapter. This will eliminate the SOS functions that the telematics unit provides but I guess it's cleaner than 'stuffing it in'.
the dealer hooked me up with 2 years of phone control and tracking...so thats why mine is staying in. but yes you could unplug it... you will get emails from subaru though for a time about the health report and that there is an issue
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Old 11-25-2018, 02:45 AM   #10
ScoobyFreak86
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I’m having this same issue with my new unit I just installed. The two gray plugs were left unplugged as there wasn’t any place to put them. Any insight on how to get the front speakers working would greatly be appreciated.

EDIT: Figured it out. Needed to plug in the starlink telematics module.

Last edited by ScoobyFreak86; 11-28-2018 at 05:35 PM.
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Old 12-22-2018, 10:50 PM   #11
SpyderWebb171
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I ended up flipping mine upside down and velcro taping it to the radio. But my reverse camera doesn't work, just get a triangle with an exclamation point. Anyone figure out how to get theirs? I've the the Dasaita HU on a 2017 Limited.
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Old 12-24-2018, 04:11 PM   #12
Jewbaru
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Quote:
Originally Posted by SpyderWebb171 View Post
I ended up flipping mine upside down and velcro taping it to the radio. But my reverse camera doesn't work, just get a triangle with an exclamation point. Anyone figure out how to get theirs? I've the the Dasaita HU on a 2017 Limited.
Is the voltage correct? I've seen people needing a step down to get the camera to work with some stereos. This thread is specific to the Maestro RR, but the info might be helpful as far as voltage and such. http://www.12voltdata.com/viewtopic....7e1204d873108c
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Old 12-26-2018, 02:55 PM   #13
Smaay
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I went through this with my wifes Forester, I made jumper wires and just connected the wires together. I couldnt fit the telematics unit in with the new radio, so I just removed it.
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Old 08-06-2019, 02:12 AM   #14
rkorkis
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how or where did you connect those 2 grey connector. I just bought idoing and my front speakers are inoperative. I appreciate if you can let me know. thanks


Quote:
Originally Posted by lanz0r View Post
I was able to connect the two grey wires to the telematics and relocate it (I just stuffed it behind the HVAC controls) and I left the antenna wires disconnected to allow for more room.

Speakers work great, now I have to figure out why my reverse camera is not working! I only get a black screen when I go into reverse.
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Old 12-31-2019, 08:03 PM   #15
MasPopes
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Default 2018 WRX Limited >> Xtrons Radio

For the 2018 WRX Limited with a telematics unit, I just completed installation of the universal Xtrons TBX125L head unit. It is an ultrawide aspect ratio,10.25 in, Android 9.0 head unit (does not come with android auto, however not necessary). I troubleshooted the front speaker issue today and figured out the work around. Follow the following steps:

Step 1) Identify the 16 pin telematics connection. There is a 20 pin and a 16 pin. The front speaker wires are in the 16 pin connection.
Step 2) Using the service manual, you can identify which pins to cut and splice. "Input" refers to the radio signal going into the telematics unit. "Output" refers to the radio signal leaving the telematics unit, going to the speakers; "LH" is left speaker, "RH" is right speaker, "-" is negative, and "+" is positive. The service manual identifies the following pins:

Looking at the telematics female connection:
Top row, left to right: Pin 8 - Pin 1
Bottom row, left to right: Pin 16 - Pin 9

Pin 1: Front Speaker Input LH -
Pin 2: Front Speaker Output LH -
Pin 3: Front Speaker Input RH -
Pin 4: Front Speaker Onput RH -

Pin 9: Front Speaker Input LH +
Pin 10: Front Speaker Output LH +
Pin 11: Front Speaker Input RH +
Pin 12: Front Speaker Onput RH +

Step 3) Connect the negative inputs to the negative outputs, and the positive inputs to the positive outputs. This acts as a bypass to the telematics units. I imagine this also retains stock functionality if you intend to plug the telematics units back in someday (not tested, nor verified). The cables still connected to the telematics connector should be every stock function other than the speakers, which you have just completed the circuit by hardwiring. You should have connected:

Pin 1 to Pin 2
Pin 3 to Pin 4

Pin 9 to Pin 10
Pin 11 to Pin 12

Yes, you will need to cut the factory wires. Leave enough working cable to strip off the insulation if you find yourself needing to restrip the wire. You don't want a situation where you cut off so much wire that you have to dig way deep into the car's harness just to access the speaker wire. Other solutions that I've seen involve splicing the telematics wires to the aftermarket radio harness, however, the solution I just described prevents excessive cutting or splicing and "should" retain factory functionality if you should reinstall the telematics unit. God speed!
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