Sony MEX-BT3700U in BMW - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Nima** · 11-07-2009, 01:36 AM

Hi guys:
I have a problem with this unit which I installed in my wife's car: a 2000 BMW 540. I used couple of of different wiring harness adaptors. Everything in the unit including bluetooth, CD player and etc works great except the main nob!!. It suppose to work as select botton which it does but when you turn it, which suppose to control the volume or adjust the clock while in setting mode, it doesn't do any thing. Basically, when I rotated the nob, nothing happens. I called sony tech support and they said to reset the system which I did with no differrence, then they said return it and I did and I got a new one. I have the same problem!!!. When I got the new unit, I did not changed the wiring which I soldered to wiring harness adaptor but I don't see how wiring can be the problem since everything else is working. Any help would be appreciated. Thanks

sdime95 · 11-07-2009, 02:25 AM

sounds like you got another bad one i have had afew bad decks right out of the box

dammitmitchell · 11-07-2009, 03:23 AM

sounds like the head unit's got issues..
what brand?
did you check consumer reports and google the unit itself?
contact the manufacture directly also.. maby they have some goodies for your inconvienence

**Nima** · 11-07-2009, 10:03 AM

It is Sony MEX-BT3700U. I read lots of good reviews about it. Yes, I called Sony tech support. They only suggestion waas to reset the unit which I have done already few times!.

chevyboy55 · 11-07-2009, 11:30 AM

I'm going to move this to the audio section they may be able to help.

dammitmitchell · 11-07-2009, 06:34 PM

have you asked the tech about the specific vehicle applications?
it's a BMW.. god knows what the hell those crazy folks do in the dashboard..

TheSunDanceKid · 01-26-2010, 03:20 AM

in no way would this be the wiring if the other functions on the deck worked and only one function does not
how exactly are you going about "reseting" the unit? and does the knob work when using it for the volume and just not when setting the clock if this is so have your tryed any other buttons to try and set the clock
after holding down the center button and getting to the clock are you pressing the SEEK+ button to get the hour to flash then trying to use the volume knob to set the hour?

11-07-2009, 01:36 AM	#1
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,169	Sony MEX-BT3700U in BMW Hi guys: I have a problem with this unit which I installed in my wife's car: a 2000 BMW 540. I used couple of of different wiring harness adaptors. Everything in the unit including bluetooth, CD player and etc works great except the main nob!!. It suppose to work as select botton which it does but when you turn it, which suppose to control the volume or adjust the clock while in setting mode, it doesn't do any thing. Basically, when I rotated the nob, nothing happens. I called sony tech support and they said to reset the system which I did with no differrence, then they said return it and I did and I got a new one. I have the same problem!!!. When I got the new unit, I did not changed the wiring which I soldered to wiring harness adaptor but I don't see how wiring can be the problem since everything else is working. Any help would be appreciated. Thanks __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner

11-07-2009, 02:25 AM	#2
sdime95 Registered User Join Date: Sep 2009 Location: Littleton, CO Posts: 33	Re: Sony MEX-BT3700U in BMW sounds like you got another bad one i have had afew bad decks right out of the box __________________ 1984 Sierra 1/2 ton 4x4 swb 1987 Silverado 2wd swb 3/4 drop

11-07-2009, 03:23 AM	#3
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: Sony MEX-BT3700U in BMW sounds like the head unit's got issues.. what brand? did you check consumer reports and google the unit itself? contact the manufacture directly also.. maby they have some goodies for your inconvienence __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

11-07-2009, 10:03 AM	#4
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,169	Re: Sony MEX-BT3700U in BMW It is Sony MEX-BT3700U. I read lots of good reviews about it. Yes, I called Sony tech support. They only suggestion waas to reset the unit which I have done already few times!. __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner

11-07-2009, 11:30 AM	#5
chevyboy55 Senior Member Join Date: Aug 2004 Location: Kelso,Wa Posts: 3,637	Re: Sony MEX-BT3700U in BMW I'm going to move this to the audio section they may be able to help. __________________ Great minds think alike,So do ours Last edited by chevyboy55; 11-07-2009 at 11:32 AM. Reason: spelling fix

11-07-2009, 06:34 PM	#6
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: Sony MEX-BT3700U in BMW have you asked the tech about the specific vehicle applications? it's a BMW.. god knows what the hell those crazy folks do in the dashboard.. __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

01-26-2010, 03:20 AM	#7
TheSunDanceKid Registered User Join Date: Aug 2009 Location: chandler, arizona Posts: 125	Re: Sony MEX-BT3700U in BMW in no way would this be the wiring if the other functions on the deck worked and only one function does not how exactly are you going about "reseting" the unit? and does the knob work when using it for the volume and just not when setting the clock if this is so have your tryed any other buttons to try and set the clock after holding down the center button and getting to the clock are you pressing the SEEK+ button to get the hour to flash then trying to use the volume knob to set the hour?



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