Question about 2002 Mercedes-Benz C-Class

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I have a problem. i just bought a MB C320 2002. the CD box would not open. i took it to fix it. now the speakers do not work and the audio asks for a code. anyone help

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You need the code to opperate the radio it should be in the hand book if not you will have to go to the
MB dealer good luck Lindz

Posted on Apr 22, 2009

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Radio stopped working now dash lights stay on 09 focus


With the parking lamps ON, the instrument panel dimmer switch uses electronic circuitry to provide a variable pulse width modulated (PWM) output to the instrument panel and all applicable switches depending on the driver-controlled level of intensity, The dash lights stay on with headlamp switch off ?
Have checked the fuse's for the Radio ?
Visual Inspection Chart Mechanical Electrical
  • Audio unit
  • Compact disc (CD)
  • Antenna
  • Battery junction box (BJB) fuse 11 (30A) (subwoofer amplifier)
  • Central junction box (CJB) fuse(s):
    • 31 (20A) (audio unit hot at all times)
    • 41 (7.5A) (audio unit hot in RUN/ACC) (early build)
    • 57 (7.5A) (audio unit hot in RUN/ACC) (late build)
    • 62 (7.5A) (audio unit hot in START)
  • Audio unit
  • Speakers
  • Subwoofer amplifier

Do you know where the central junction box Is ?

Pinpoint Test A: The Audio Unit Is Inoperative/Does Not Operate Correctly
Normal Operation The audio unit receives voltage at all times through circuit 29-MD15 (OG/BK), voltage in RUN/ACC through circuit 75-MD15 (YE/GN), and ground through circuit 91-MD15 (BK/GN). The audio unit is operational with the key in RUN or ACC.
    Possible Causes
  • Fuse
  • Circuit 29-MD15 (OG/BK) open
  • Circuit 75-DA4 (YE/GN) open
  • Circuit 75-MD15 (YE/GN) open
  • Circuit 91-MD15 (BK/GN) open
  • Audio unit
  • Can you pull the radio out , to check power and grounds at the radio connector's if fuse's are Ok .

Dec 30, 2016 | 2009 Ford Focus

1 Answer

How do i fix my cd player


How to Fix a Car CD Player

Simple Troubleshooting

Before you decide to open up the player and attempt more invasive repairs, try some of these more basic troubleshooting tips to figure out how to fix a car CD player:
  • Is the problem related to the volume or quality of the sound? This could be related to the speakers and not the main unit of your audio system. Take the time to remove the covers from the speakers in your car and make sure there's no trapped dirt or damage. Also check the electrical connections on the back to make sure they are still firm and make a good connection.
  • If the speakers look fine, another issue that could affect sound is the quality of the connections behind the head unit of your system. You'll need to open the dash to access the unit (see your owner's manual or an auto repair manual for your car). Make sure all channel (speaker) connections are solid and make good contact.
  • When you insert a disc, is the CD display blank? While it sounds simple, one of the most common mistakes people make is inserting a CD upside down. This will cause the player to act as though it isn't working.
  • Is the music skipping or stopping completely? This is commonly caused by dirty or damaged tracks on the disc. Before assuming that the problem is with the player, test a few newer CDs and see if the skipping behavior continues. If it doesn't, the the problem is the disc and you'll need to look into cleaning or repairing the disc so that it can play normally again.

Sep 30, 2016 | Cars & Trucks

1 Answer

2003 ford expedition, eddie bauer, cd player has stopped working. I took the cd player out. Can I just replace the cd player instead of replacing the whole radio unit? I can't seem to find anywhere to...


Unfortunately not. The first thing I would try to do is get the cd player fixed by an audio store in your area. If it cannot be fixed, you will have to replace your radio unit. Let me throw this at you. I have invested in a whole new sound system in my vehical. I am not saying that all of your speakers need to be replaced, but an aftermarket stereo unit is more fuctional and stylish than than your stock stereo unit. Hope this helps! Please rate 4 thumbs up!

Apr 18, 2011 | 2003 Ford Expedition

1 Answer

Infiniti G35 speakers don't work


03 and 04 G35 vehicles had a Technical Service Bulletin issued regarding the audio circuit board. No sound was one of the symptoms of a faulty circuit board. There was a design flaw with the boards on the early model G35's that was corrected in 05.The audio units on those cars consisted of three pieces, the radio itself, which is just a silver box, a circuit board that attaches to the front of the radio and then the outer display. I would suggest contacting a dealership service dept. with your VIN number in hand, and ask if the circuit board has been replaced. Even if it has, It will still more than likely be the problem. It's either that or the radio 

Apr 27, 2009 | 2004 Infiniti G35 Sport Coupe

2 Answers

91 Ford Tempo - New stereo won't work ... Please HELP


here is the radio's wire color diagram, u should be able to fix the problem with this info.Fuse box is on drivers side under the dash.
1991 Ford Tempo Car Radio Wiring Guide
Car Radio Battery Constant 12v+ Wire: Green/Yellow
Car Radio Accessory Switched 12v+ Wire: Yellow/Black
Car Radio Ground Wire: Red or Black
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 6 1/2′
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Orange/Green
Left Front Speaker Negative Wire (-): Black/White
Right Front Speaker Positive Wire (+): White/Green
Right Front Speaker Negative Wire (-): Black/White
Car Audio Rear Speakers Size: 5′ x 7′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Pink/Green
Left Rear Speaker Negative Wire (-): Pink/Blue
Right Rear Speaker Positive Wire (+): Pink/Blue
Right Rear Speaker Negative Wire (-): Green/Orange

Apr 12, 2009 | 1991 Ford Tempo 4 Door

2 Answers

2002 ML320 No Sound..PLEASE HELP!


I install car audio for a living, and see this problem in ml320's all the time. There is no good fix for it. Every time one of my customers goes to the dealership, they tell them they need to replace the system. You can buy a very nice aftermarket indash with navigation, moblile video, bluetooth, and Ipod controller for 1/5 of what Mercedes will charge. The wires you need for power are behind the radio, a standard VW adaptor harness will work, just make sure to reverse the constant and switched power wires in the harness(red and yellow). You can catch all the speaker wires at the factory amp.

The amp is under the drivers side dash. I have seen post that place it above the gas pedal, but the ones I have bypassed are to the left of the steering column. It is way up there, and not in plain site. It is all the way up, in the corner against the firewall2.gif. If you pull back the black sound proof material, you will see it. It looks like an aftermarket amp. It is held in with one 10mm bolt at the bottom. The speaker wires are twisted. The ones I did used the same colors for left and right, so use a tone generator, or small battery to find left and right, front and rear. On the ones I worked on, the pinks and blues were the positives. Hope this helps.

Mar 05, 2009 | Mercedes-Benz ML320 Cars & Trucks

1 Answer

Install new cd player please help


HERE U GO.

2002 Pontiac Grand Am Car Audio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: The radio harness does not provide a switched power source. Run a wire to the fusebox for switched power.
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: Pink
Car Stereo Amplifier Location: Mounted behind trim in the left side of the trunk.
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue
-->

Feb 05, 2009 | 2002 Pontiac Grand Am

1 Answer

'06 Honda Civic EX, speakers not wrking after new battery installation


you have a grounding problem i would check all grounds and negative wires and if you cant find the problem take it to a shop that runs a o-scope that will find it for sure

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1 Answer

Speakers not working good


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Jul 14, 2008 | 1998 Ford Contour

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