2008 DTS Maestro Questions

Group using the GM3 and GM5 firmware for Onstar bluetooth, sat radio, Door chime, turn signal retention and steering wheel control, custom gauges, vehicle info, park assist... * see specific firmware for full feature list.
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Soapm
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2008 DTS Maestro Questions

Post by Soapm » Fri Dec 21, 2018 12:07 am

I’m trying to understand more so I can maximize the Maestro for my use…

I have a 2008 DTS with an upgraded VCIM (OnStar module) from a 2009 DTS, so my car has factory Bluetooth phone features but no telephone buttons on my steering wheel. The aftermarket radio I purchased is a Kenwood, DDX6904s…

When flashing the firmware, I chose NO ONSTAR (since I don’t use the service) and NO telephone buttons on the steering wheel. I’m starting to wonder if that was the right choice. Should I have chosen OnStar regardless if I use it or not? It is in the car and it does work.

I would like to use the OEM microphone instead of the littering the cars aesthetics with the mic that came with the radio. I searched before posting and found a post saying that if I want to use the OEM microphone then I have to pair the phone’s Bluetooth to the cars OnStar module instead of pairing to the radio. Is that correct?

If so, my questions are will I have to re-flash the Maestro’s firmware to get this to work? Will I still see and be able to answer calls with the radio or will I only see them on the cars DIC (like before upgrading the radio)? And will I be able to interact with the phone via the radio? Things like initiate and end calls, talk to google assistant etc… I am asking can I do this without plugging in the USB cable, just via Bluetooth, as I can now with the phone paired directly to the radio.

On a separate note, one reason I went with this combo is so the radio illumination would dim and brighten with the cars dimmer control. I double checked that the orange/white wire from the aftermarket Kenwood radio is connected to the orange wire of the harness going to the Maestro but the feature doesn’t seem to work. No matter how I change the setting in the Kenwood radio (on, off, sync), the radio illumination doesn’t change with the car dimmer switch. Is there something else I need to do to make this feature work?

Also, the GMS05 harness had a blue 4 pin connector that I wasn’t sure where to plug into the Maestro. The connector I believe is letter “C” in the install guide, which is a red connector on the Maestro, however, the 4 pin connector on the GMS05 harness is the same color as the blue 4 pin connector on the opposite side of the Maestro (between “F” & “D”). That’s a headscratcher, where does that connector go and what does it do so I know I have it right?

Lastly, is that little speaker that comes with the GM kit necessary? It’s thrown in behind the stereo at this time but I can’t figure out what it does or why it’s needed. I hear the chimes and blinker coming from the car and really didn’t want a cheap speaker stuck to my dashboard or visible anywhere??? Can that speaker be taken out or is it necessary?

Ps… Is there any way to re-flash the Maestro without taking it out of the car?

Thanks for any help…

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billr
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Re: 2008 DTS Maestro Questions

Post by billr » Fri Dec 21, 2018 9:29 am

It would be better if you called in so we could go over the answers, this way we can make sure we get them all answered
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Soapm
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Re: 2008 DTS Maestro Questions

Post by Soapm » Tue Dec 25, 2018 3:16 am

This was the time I had set aside to fiddle with my new radio so I found and had time to watch the training modules which answered some if not all of my questions. See below to see if I’m on the right track…
When flashing the firmware, I chose NO ONSTAR (since I don’t use the service) and NO telephone buttons on the steering wheel. I’m starting to wonder if that was the right choice. Should I have chosen OnStar regardless if I use it or not? It is in the car and it does work.
This is correct, I need to re-flash and chose OnStar and all other features I wish to retain.
I would like to use the OEM microphone instead of the littering the cars aesthetics with the mic that came with the radio. I searched before posting and found a post saying that if I want to use the OEM microphone then I have to pair the phone’s Bluetooth to the cars OnStar module instead of pairing to the radio. Is that correct?
This is correct, if I desire I can use the cars Bluetooth/OEM mic which also allows me to retain the cars voice commands etc… However, I must install the Kenwood mic to use Android Auto via the USB connector…

On a side note I guess I can reflash my module and play with it to see if the functionality of the radio to control the calls, text, Bluetooth streaming etc... remains.
Lastly, is that little speaker that comes with the GM kit necessary? It’s thrown in behind the stereo at this time but I can’t figure out what it does or why it’s needed. I hear the chimes and blinker coming from the car and really didn’t want a cheap speaker stuck to my dashboard or visible anywhere??? Can that speaker be taken out or is it necessary?
My car has the factory Bose amplifier so I hear the chimes, blinker via the factory speakers. I also don’t have safety features like lane departure, collision avoidance and blind spot detection so I really don’t need to have it installed.

There are still a couple of questions I need answered but at least I’m moving in the right direction. I just need to take off some time so I can call in.

Soapm
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Re: 2008 DTS Maestro Questions

Post by Soapm » Thu Dec 27, 2018 9:39 pm

Getting close to getting this 100% working, two more questions and I should have this done. I haven't been able to take time off work to call during the day and don't think I'll be able to take off work until next week. We're really busy right now and I just can't take the time off to deal with this during the day so I am hoping someone can help via this post.

1. My Kenwood DDX6904s has a "dimmer" circuit as opposed to "night mode". This means it's looking for a voltage that varies from 0v to 12v on the illumination wire to dim the radio with the dash lights. My 2008 Cadillac DTS with Bose system/no nav with factory amp has a yellow wire on pin 7 of connector X1 that would DIM the factory radio display (I can provide the wiring diagram if needed). That wire mates to an orange/white wire on the GM05 harness that appears to enter the Maestro on pin 5 of Connector A. I could be tracing that wrong???

Long story short, the "illumination" output from the Maestro is the orange wire on pin 1 of Connector F. I don't have a volt meter but I need to know if that wire outputs a constant 12v or does it output a voltage that varies as the dash lights go brighter or dimmer? Kenwood thinks it might be outputting a constant 12v which means it's turning my radio to maximum brightness and is trying to trigger what they call, "night mode", which would trigger some radio's display to a night level of brightness. However, this won't work for my model Kenwood. It expects to see a varying voltage. Or Kenwood could be blowing smoke up my ***.

What is Maestro outputting on the orange wire on pin 1 of connector F and does it correspond to the brightness level of my dash lights?

2. My onstar isn't working. When I press the button on the mirror or steering wheel, I see the radio go into onstar mode, the screen gives me two boxes that say "end" or "talk" but I don't hear anything out of the factory speakers and it doesn't respond to my voice like when I say, "Bluetooth" to try to pair my phone. Any suggestions how to troubleshoot why OnStar isn't working. I did reflash the Maestro and included OnStar this time. I also don't have the little Maestro speaker connected, but I didn't think it was needed for Onstar.

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Dara DeGrand
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Re: 2008 DTS Maestro Questions

Post by Dara DeGrand » Fri Dec 28, 2018 12:02 pm

1. It gives 12 volts when the parking/head lights are on. The kenwood will either be full brightness or dimmed; it does not have a way to respond to variable voltages. This is how all aftermarket radios work.

2. OnStar generally comes through the speaker under normal operation. Plug it in, and you should hear it. One other thing; please ensure that the audio cable running between the RR and the radio is plugged into the 'iDatalink I/F" port on the back of the radio. This could also keep OnStar from being audible.
Dara DeGrand
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Soapm
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Re: 2008 DTS Maestro Questions

Post by Soapm » Fri Dec 28, 2018 12:34 pm

Dara DeGrand wrote:
Fri Dec 28, 2018 12:02 pm
2. OnStar generally comes through the speaker under normal operation. Plug it in, and you should hear it. One other thing; please ensure that the audio cable running between the RR and the radio is plugged into the 'iDatalink I/F" port on the back of the radio. This could also keep OnStar from being audible.

Thanks Dara, which speaker? The supplied GM5 speaker or the cars factory speakers? I do have the factory Bose amp if that makes a difference?

Also, when you say, 'iDatalink I/F" port, is that the cable that looks like it has an extra blue/yellow wire attached to it? And if so, is it the 4 pin wire that plugs into connector D on the Maestro then to what looks like a 3.5 mm jack on the Kenwood end?

Or does it plug into connector E on the Maestro per the Maestro Wire Description dated 2012 that you get when you scan the QR code on the back of the Maestro? If so, that looked like a connection I didn't need since I didn't see a matching connection on the install instructions??? That might be the wire that's confusing me???

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Dara DeGrand
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Re: 2008 DTS Maestro Questions

Post by Dara DeGrand » Fri Dec 28, 2018 1:45 pm

"The speaker" = the GM5 speaker.

The blue port should not be used in your application. The audio cable is the all black, 3-pin to 3.5mm cable. It is the port next to the blue port on the RR.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

Soapm
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Re: 2008 DTS Maestro Questions

Post by Soapm » Sat Dec 29, 2018 3:50 am

That was the problem, I removed the cable in the blue port and moved the 3 pin cables 3.5mm jack to the "iDatalink" 3.5mm plug on the radio and now I hear the onstar loud and clear through the factory speakers. However, it doesn't recognize the "Bluetooth" command so I can't pair my phone.

...

On another note, the orange wire out of my Maestro never outputs 12v and the "dimmer" wire that went to the factory radio does indeed vary in voltage as I turn the dash lights up and down. I tested it with a test lamp and a volt meter. I was able to bypass the Maestro by connecting the orange/white wire on the GM5 harness to the orange/white wire going into the radio and the illumination feature on the radio now works, but I was never getting 12v out of the Maestro on the orange wire which seems to be what was causing my display illumination problem. Maybe I have my dash lights too low that it wasn't triggering the Maestro but I tested the orange wire voltage while turning the dash lights completely up and down (bight to dark and back again).

...

Could anything in the Maestro be causing my Onstar to not recognize my Bluetooth command so I can pair the phone? I ask because the 2008 Cadillac DTS didn't come with factory Bluetooth so I have a VCIM (Onstar Module with Bluetooth) out of a 2011 DTS which is how I had factory Bluetooth in my car until now. I was wondering if anything in the Maestro's firmware could be turning off the Bluetooth portion of the onstar module thinking my 2008 DTS doesn't have that feature (since it didn't come that way from the factory)?

Thanks for all your help...

Soapm
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Re: 2008 DTS Maestro Questions

Post by Soapm » Tue Jan 01, 2019 9:43 pm

God the steering wheel buttons straitened out which reminded me how bad the factory Bluetooth sucks so I'm back to using the Kenwood for Bluetooth.

One last question, I'm no longer getting audible text notifications when my phone is connected to the USB cable, could Maestro have anything to do with this? It's not the phone itself since I can launch android auto and put it into car mode and the notifications work. They also work when plugged into my PC, they only stop working when plugged into the radio in the car so I was wondering if this was some kind of distracted driving feature or something???

JustinFerroni
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Re: 2008 DTS Maestro Questions

Post by JustinFerroni » Wed Jan 02, 2019 8:56 am

audible text notifications would be related to the radio functionality not the maestro.
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Soapm
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Re: 2008 DTS Maestro Questions

Post by Soapm » Thu Jan 03, 2019 5:29 am

Thanks and great product...

JustinFerroni
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Re: 2008 DTS Maestro Questions

Post by JustinFerroni » Thu Jan 03, 2019 9:18 am

It is not a problem and thank you!
Justin Ferroni
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T: 514.807.2888
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