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  #25  
Old 07-07-2012, 09:24 PM
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Re: Someone please help me

My 69 Chevy use to do that before the alternator and battery totally crapped out.

Ironic.
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  #26  
Old 07-08-2012, 01:01 AM
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Re: Someone please help me

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Originally Posted by 77Cherokee View Post
I think your dealer is mistaken, and possibly the folks you spoke to at Chrysler. Don't spend any money trying to fix this problem. To satisfy yourself that the volume is not supposed to be speed controlled, ask your dealer if you can drive another vehicle with the same radio and see if it happens. If not, they should just be able to switch out the radio in your Jeep. As stated above, the only speed signal sent to the radio is to lock out some features of the Nav. If your volume is changing by itself, it is being caused by something else, either in the radio itself or there is another problem.
My wife's 2012 JGC Laredo X does the exact same thing. We got our cars merely weeks apart. If you drive with the Nav map up and watch the MPH while you are listening to the stereo, the volume goes up as you accelerate approximately every 5 MPH increments. Also, once you go above the programmed speed limit on the Nav map, the music goes up again. It turns down at stop signs, and if you are at a red light (where you would remain stopped longer than a few seconds) it turns down even more. If you are listening to the stereo at a louder volume, obviously the fluctuations are more apparent.

It's too deliberate to be a defect. This thing is getting a speed signal right from the wiring harness. The only thing I can think of as to why some people with 430Ns have the feature and some dont is that some models were made with the programming, and some were not. Maybe it depends on the build date. I don't know.

Again, the most frustrating thing about this whole thing is that everyone involved (Chrysler, UConnnect, Dealership service managers) have all proven to be completely incompetent when it comes to identifying the feature. But the feature is definitely there.

I have gone so far as to speak with Mitsubishi Electronics on Friday, and I am supposed to hear back from them Monday or Tuesday after they speak with their engineering division.

This has not been fun. I'm beyond pissed. To date, Chrysler's only offered solution has been to ask if I want to escalate the case to a "buyback" on the car. This is so completely ludicrous. I guess it's what I get for going back to American cars.

Josh
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  #27  
Old 07-09-2012, 09:06 PM
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Re: Someone please help me

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Originally Posted by ColdCase View Post
The fact they say the radio gets the signal from the speedo (incorrect) has me suspect ...
The radio does, in fact, get the speed signal from the speedo over the CAN bus. This drives the speed display in the lower-right corner of the NAV screen; it's not derived from the GPS.
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  #28  
Old 07-09-2012, 11:49 PM
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Re: Someone please help me

Quote:
Originally Posted by Andrew Klossner View Post
The radio does, in fact, get the speed signal from the speedo over the CAN bus. This drives the speed display in the lower-right corner of the NAV screen; it's not derived from the GPS.
You are correct. There is also a 3-5 second delay between real time speed and speed indicated on the Nav screen. This makes the speed volume control all the more ridiculous because it essentially has a delay as well, ie the volume will turn down a few seconds after you have come to a complete stop, etc.

I think the electronic engineers seriously dropped the ball on this head unit. Now I'm debating just scrapping the HU and putting in an aftermarket one.
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  #29  
Old 07-10-2012, 06:29 PM
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Re: Someone please help me

So, today was another day in the land of Chrysler confusion.

Heard back from Mitsubishi this morning. They advised me that the head unit does not have any speed volume feature programming built into it by Mitsubishi. The feature is essentially added by Chrysler. The theory now is that the amplifier is picking up the speed off the CANBus system and altering output accordingly.

Also heard back from UConnect and they informed me, yet again, that the car DOES HAVE speed sensitive volume control. Also heard back from the dealership service guy I charged with the task of finding out from the Chrysler "engineers" how to turn off the feature. He heard back from Chrysler, and "they don't know."

The silver lining in all of this is that I got my speed volume control suspicion validated (again) by UConnect, and I also went on a test drive with an aftermarket audio guy who validated it's presence as well. He heard the volume increase the second I rolled out of his shop's driveway.

So, after two months and a notebook's full of phone numbers and contact info trying to get to the root of the problem, I have decided to junk this RHB piece of shit and drop in an aftermarket head unit with an integrated amp. That way, whatever "programming" Chrysler has built into the factory amp or the stock head unit will go the way of the buffalo.

I have also learned a great deal about the Chrysler company in the process.
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  #30  
Old 07-11-2012, 03:53 PM
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Re: Someone please help me

Eugene - Do you have the optional VES system (overhead DVD player, etc)?
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  #31  
Old 07-11-2012, 10:14 PM
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Re: Someone please help me

Quote:
Originally Posted by Andrew Klossner View Post
The radio does, in fact, get the speed signal from the speedo over the CAN bus. This drives the speed display in the lower-right corner of the NAV screen; it's not derived from the GPS.
Not to nit pick, but the CAN bus signal comes from the power-train computer, not the speedo display, (the computer drives the speedo display needle and EVIC digits) and sorry but the display on the Nav screen is indeed GPS derived, thats why many of you see a delay, it takes awhile for the little head unit computer to figure out what the actual speed is. The CAN bus data is used for safety/lockout functions, such as no DVD or Nav inputs while rolling.

Putting another head unit in requires some work, especially if you want rear cameras and microphone without looking ghetto. Its not plug and play and often they come with their own quirks. It may be easier to install something like a lockpick device that defeats the speed input to the radio/modules.
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  #32  
Old 07-11-2012, 10:36 PM
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Re: Someone please help me

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Originally Posted by ColdCase View Post
Not to nit pick, but the CAN bus signal comes from the power-train computer, not the speedo display, (the computer drives the speedo display needle and EVIC digits) and sorry but the display on the Nav screen is indeed GPS derived, thats why many of you see a delay, it takes awhile for the little head unit computer to figure out what the actual speed is. The CAN bus data is used for safety/lockout functions, such as no DVD or Nav inputs while rolling.

Putting another head unit in requires some work, especially if you want rear cameras and microphone without looking ghetto. Its not plug and play and often they come with their own quirks. It may be easier to install something like a lockpick device that defeats the speed input to the radio/modules.
I was looking at AllGig by NavTV, and my initial theory was that cutting the speed info to the head unit would indeed solve this problem. Then I backpedaled based on what Mitsubishi told me. I don't know what the truth is anymore. Very frustrating. I'd do AllGig in a NY minute over installing new components. I wonder if cutting the speed info to the head unit via AllGig will solve this volume fluctuation issue.
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  #33  
Old 07-11-2012, 10:38 PM
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Re: Someone please help me

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Originally Posted by Justal13 View Post
Eugene - Do you have the optional VES system (overhead DVD player, etc)?
No, I don't.
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  #34  
Old 07-12-2012, 08:52 AM
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Re: Someone please help me

What software version is installed on your radios? Perhaps volume control an undocumented feature on the newest radio software? (and has an undocumented way to turn it off, although there is no way to disable it on my Mercedes). If so you can perhaps have the dealer swap out with an older radio. Not sure if you can back up a revision.

If the radio is using the GPS derived speed, you won't be able to defeat it with an external device. Before you go through the trouble, you may want to try disconnecting the GPS antenna from the radio, and see if the volume fluctuates. If it continues to fluctuate, then an external device may work.

EDIT:... Ah never mind.. I noticed sporadic reports of this behavior way back to 2009, several posts with questions about how to turn it off, no resolution, however. Some theorize its actually the amplifier or the MyGig module that is adjusting the volume, not the radio head itself. Some found a disable box with the fader/base/treble adjustments, others not.

I wonder if the feature can be accessed via the engineering menu.
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  #35  
Old 07-12-2012, 11:33 AM
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Re: Someone please help me

I had found several comments (and proposed fixes) regarding this problem in Chrysler products equipped with the VES overhead DVD system. However, Eugene says he does not have that in his GC.

I have searched the Chrysler 300, 300C, Charger, Challenger and other Jeep forums. All indications still are that no Chrysler media system radios have speed-sensitive or speed-compensated volume of any kind.

However, I have seen many comments regarding this issue primarily on U-Connect equipped vehicles with the 430N and 730N radios. I wonder if the voice-activated mic system is malfunctioning, hearing road noise and adjusting volume to compensate. I would try covering the mic (in the mirror?) and driving the GC to see if it makes a difference. I would literally place a piece of black tape over the mic opening, and then wrap the outside of the mirror with a thick rag or piece of cloth to make sure no road noise is getting to the sensor.

Just a crazy idea...
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Old 07-12-2012, 02:28 PM
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Re: Someone please help me

Quote:
Originally Posted by Justal13 View Post
I had found several comments (and proposed fixes) regarding this problem in Chrysler products equipped with the VES overhead DVD system. However, Eugene says he does not have that in his GC.

I have searched the Chrysler 300, 300C, Charger, Challenger and other Jeep forums. All indications still are that no Chrysler media system radios have speed-sensitive or speed-compensated volume of any kind.

However, I have seen many comments regarding this issue primarily on U-Connect equipped vehicles with the 430N and 730N radios. I wonder if the voice-activated mic system is malfunctioning, hearing road noise and adjusting volume to compensate. I would try covering the mic (in the mirror?) and driving the GC to see if it makes a difference. I would literally place a piece of black tape over the mic opening, and then wrap the outside of the mirror with a thick rag or piece of cloth to make sure no road noise is getting to the sensor.

Just a crazy idea...
I did do the road noise experiment. It's not road noise activated. Since u connect has been the only ones to date to confirm the presence of this feature, I'm almost confident that it has something to do with their programming in the unit. If the head unit is using the speed info to modulate the amp output, then theoretically this AllGig module I just ordered will work. If not, I'm out $300. I just don't know how else the amp Would be controlled if not from
The head unit...???? and I don't know if the head unit is using my gps speed or real vehicle speed as the data source.
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