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2008 Ml320 cdi No sound from audio.

Customer Question
2008 Ml320 cdi No sound from audio.
Submitted: 1 year ago.Category: Mercedes
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Answered in 3 minutes by:
5/19/2016
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 5,359
Experience: 15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
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Hello. When you press the SAT button does the radio say no sat radio ?
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Customer reply replied 1 year ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Provide Diagrams, Manuals, or Instructions + Help via Email or Text Message + Local Mechanic Recommendations. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
I would gladly offer a phone call I must ask where you are located and you do speak English correct lol ??
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Customer reply replied 1 year ago
No sat radio
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Ok pull up the folding left back seat. The sat radio module is under there , there may be a module or two on top of it. You need to unplug the module and reconnect it.
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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Just to confirm you did have sat radio installed right ? It may not had been active subscription but you did have it correct ?
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Customer reply replied 1 year ago
First of all cd player sign will not come on unit may be busy as it was jammed.I by pass with fiber optic jumper then i pulled rear seat behind there are total 3 unit 2 of them with fiber optic cable i unplugged fiber optic and plugged in no sound
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
No you need to disconnect the entire module to reset it
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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Unplugging the fiber optic does nothing.
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Customer reply replied 1 year ago
one of them is sat radio
Customer reply replied 1 year ago
ok i try that
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Ok let me know
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Customer reply replied 1 year ago
no change
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Ok you need to shut the radio off and back in after disconnecting to restart the fiber optics
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Customer reply replied 1 year ago
how many audio unit are in car and where are they located.Like one main on dash board ,cd changer in glove box two unit under rear seat behind driver,one unit with sub speaker in on side wall in trunk.where is amplifier?
Customer reply replied 1 year ago
Hello are you there
Customer reply replied 1 year ago
Is there any thing under driver seat? My understanding is when you turn on system you should flashing light from fiber optic and also from unit am i correct?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Ok yes every time you turn the radio on the unit will flash a red light so you need to check each unit for a flash. You have the radio , the sat module and the amplifier under the drivers seat and the tele aid also under there if equipped.
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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
by under the seat I mean you have to remove the seat and carpet to access under the paneling
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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
If you give me some time I will get you pictures of all the locations
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Customer reply replied 1 year ago
tele aid has sound but nothing else,So two unit under back seat i do not get flashing light on both of them(mean unit and also from fiber optic)
Customer reply replied 1 year ago
If one of unit is not passing fiber optic signal is that mean fiber need repair or unit need to replaced.
Customer reply replied 1 year ago
hello
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
Ok that is Not likely to have more than one module faulty.
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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago
The cables just pass between all the modules. The modules will only flash lights when the radio is first turned on. So each time you need to turn the radio off and back on. Also if the fiber optics are unplugged you need to make sure the power wires are still connected.
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Mercedes Mechanic: ,  replied 1 year ago
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Phone call session started
Customer reply replied 1 year ago
Hello ,
So do you have any information what most likely is wrong?
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Lou P. master tech
Lou P. master tech
Lou P. master tech, Mercedes Technician
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