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I have a No Satellite Radio message on my GL450. I opened

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Michael I have a No...
Michael I have a No Satellite Radio message on my GL450. I opened the driver door and disconnected the beg bat under passenger seat for a few min. No joy. Any suggestions?
Submitted: 1 year ago.Category: Mercedes
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Customer reply replied 1 year ago
I disconnected the Neg battery terminal. Didn't work. 2007 gl450. My email is***@******.***
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: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 16 hours by:
7/17/2016
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: 5,344
Experience: 15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
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Hello, with the battery connected, i need you to unplug and reconnect the sat radio module located under the drivers back seat bottom. here is a link.

then the system should start up, if not you need a new sat radio module. hope this helps, let me know if this helps or not please, i am here to help. Lou P.

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Customer reply replied 1 year ago
Thank you for the suggestion. I disconnected the sat module but not the blue antenna connector. Same error message appears. Before I order a module, could it be a faulty antenna wire?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

ok so the issue is going to be the module, the antenna will not affect the operations only the sound quality. when the message NO SAT RADIO comes on the screen that means that the system cannot recognize the module. the only last thing you can check is the fuse, ill get you the location.

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Customer reply replied 1 year ago
Location of sat mod fuse?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

39 in the rear trunk fuse box on the right side of the cargo area

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Customer reply replied 1 year ago
Fuse 39 7.5 amp is good. I'll install a new Sat Module and let you know how it goes.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

ok, another test is to have the radio off, unplug the fiber optic line to the sat module, turn the radio on, the red light should flash a few times out of the lines on one end only and the sat radio module will flash out of a port as well, if no flash then another nail in the coffin.

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

each time the radio is turned on the fiber optic lines will be pulsed to check communications. there is one line in and one line out, so the line that pulsed TO the sat module is the input and then the sat module will pulse on the opposite side , if that makes sense. if no pulse of red light, boom, dead. just make sure that the wiring is still connected to the sat radio module, just remove the fiber optic orange lines. Please take a second and click the stars at the top of the screen to rate me so i may receive my credit , 5 stars is ideal , please request me in the future.
Keep in mind then when you rate it does not end our conversation. you can still return here to me for follow up information if needed, Lou P.

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Customer reply replied 1 year ago
Lou,
I installed a new Sat Radio module and it still doesn't work. What does that mean?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

With the new one let's check to see if we are getting a red pulse out of it.

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Customer reply replied 1 year ago
Can I pull the fiber optic lines from the connector housing without ruining the integrity?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

The fiber optic lines should both be in a small connector that can all come out of the bigger connector. If I remember correctly the plug should have the fiber optics and the wiring for the module all in one.

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

And yes. As long as you do not kink them they will be fine

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Customer reply replied 1 year ago
Just ran the test with the old unit and new unit. On both units I got no red flash from the removed fiber optic cables and got two one second flashes from both units from the unit.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

ok , well that means that the sat radio is ok.......

and the issue is somewhere else. so we need to access the cd changer and the amp under the seat.

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Customer reply replied 1 year ago
Ok I'll need you to step me through that tommorrow. I hope it's a loose fiber optic connector at the other end. I had this problem for a week 6 mos ago and it fixed itself.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

ok so are you near the car now? we can try to pull the fuse to see if it resets, the same as disconnecting without all the hard work. also did it rain or the car get wet before this?

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Customer reply replied 1 year ago
No it hasn't rained. Can you call me at(###) ###-####
Customer reply replied 1 year ago
I'm near the car
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

cant call without doing a phone offer, sorry, also i would hate for you to call me right now and have to wait for me to locate the fuses. so lets hang on to that thought until we need to.

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Customer reply replied 1 year ago
Tell me what fuse to pull and I'll try that.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

so far fuse 35 in the rear trunk fuse box.

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

then fuse 14 in the passenger side of dash fuse box. that first fuse is for the amp the second is for the cd changer

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Customer reply replied 1 year ago
Lou, I haven't been able to work on the car for a few days. I checked fuse 14 in the glovebox. It is not blown. Where do we go from here?
Customer reply replied 1 year ago
Also fuse 35 is good.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

ok did the radio system come back to life at all after removing the fuses?

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Customer reply replied 1 year ago
I took 35 out and reinstalled it last week and drove the car. I pulled 14 today and started the car just now and after the "Aquire satellite" finished I got the "no satellite radio"message.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 year ago

ok, so that is good and bad, if the acquire sat came on that means that the sat radio module was working, but then the fiber optic system went down again so if you are still going to attempt to fix yourself then it is going to take a good amount of time at one time to access all the audio equipment, disconnect the connections and watch for the red fiber optic, the other option is to just go ahead and get the codes read and see if that tells the issue off the bat , i dont mind helping either way it will just speed up the process on both of our ends .

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Lou P. master tech
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