eaks

Hey guys.. I am currently in the process of getting my 2005 CL65 sold. This year (after sitting on my lift stored for 8-10 months) I went out for a test drive and the nav screen turned on at first but then poped up with "system unavailable" and shut off.. I dont believe I have seen this message before but I honestly didn't use the stereo a whole lot and put 3K kms on it during my 3 years of ownership..

I did some research and read about some of the components in the fiber optic string failing causing this issue.. I went through everything and believe the issue is with the amplifier (silver box in the same holding bracket as the big black device..located in the middle bottom of all the devices).. I tracked through all devices looking for the red light.. once I found that after the amp there was no red light I took the fiber apart and put it in the mercedes fiber coupler.. I then traced the light all the way through the fiber optic system (I even went straight to the head unit and lifted the return fiber and saw the light coming all the way back to the head unit).. But the thing is that even with the fiber system in a complete loop I still get a system unavailable message and unit shuts down..

From my research with a unit bypassed (with the couple installed) the system should still work (just clearly you wont have any options to that device.. In my case I would expect everything to work but the audio)..

Does anyone have any ideas? Just sucks that as soon as I get someone interested this issue pops off and possibly scares away a potential buyer.

I am most likely going to purchase a used amp from ebay and try it out but I would much rather identify that this is the part I need prior to spending money on it.. It is also possible (but very unlikely) that I hooked up the fibers in the wrong order after doing my trouble shooting again very unlikely but it is possible..

Thanks guys

tusabes

What's the sales price ? I might be interested and don't care about nav

eaks

I'm asking 40k cdn (about 30k us).. I however am more flexible with the audio not working.. And I would cut a good deal to get it gone.. It is at 132k kms and had a ppi done at around 130k kms (found worn ball joints and control arms which were all replaced..

It's in Calgary and if you search cl65 it's the only one (my phone let me link it but when I fire up my computer I can link it)

And car was originally a us car that was imported to Canada.. I still have all the import paperwork

renault12ts

I also have a problem with my Comand APS and posted a thread earlier:

https://mbworld.org/forums/cl-class-...s-problem.html

The silver box is the Audio Gateway (AGW) the black, finned box is the amp.

eaks

I'm pretty sure it's a Becker amp?? I found it on eBay and it looks just like that device..?

EDIT: Looks like you are correct and the people posting them up on ebay show them as an amp.. However the nameplate shows the AGW.. Do you know what model numbers will work with mine?

Does it make sense that with this unit dead and bypassed that my system will show unavailable (It makes sense in my mind but I want clarification)..

Thanks

renault12ts

If the amp is at fault you can bypass it and everything will work...but you have no sound. The system needs the AGW so bypassing it means nothing works.

eaks

ok.. I just pulled the unit and am gonna order the same part number online and hopefully it all works out..

biker349

keep us posted. thanks.

eaks

Will do.. Part should be here in a couple weeks I hope..

eaks

Hey guys.. I just got the part in and threw it in (I matched the part numbers and its the same).. I still get the same result (system unavailable).. I checked with the fiber disconnected from the gateway but the harness plugged in and I didn't get any lights out of the becker gateway..

I double checked the connectors and found an identical connector in the same area and connected it up and same result.. I have 4 connectors plugged into the amp (2 antenna like connectors at the bottom front side of the gateway, one wiring/fiber harness above these, and on the other side there is one pretty sure 4 prong connector)..

Any ideas guys? I have a guy waiting to pick the car up just trying to get the audio working 100%..

Thanks

Jack_88

Are you sure that part was the problem? Did you check all associated fuses and relays?

eaks

Can you comment on what fuses and relays I should check? From everything I read it was test the system by isolating each part one at a time.. I did so for every device and the only device that didn't send out any light was the audio gateway (which when bypassed gave the same error.. which makes sense to me as well as one other person in this thread).. I assumed the gateway was the issue. Do they fuse this with a difference fuse than the head unit? I would have thought they would have been the same.. Let me know what fuses and relays to check and I will check them out.

Thanks

Jack_88

I don't have specific knowledge for Mercedes electrical systems, but unless the part you purchased was also defective, that it didn't fix the issue would suggest something else is the issue.

If you go to this site, you will find the first post has a diagram of the fuses and relays for the car. Anything that says Navigation, Command, radio, or anything like that should be checked.

eaks

Yeah I already starting digging for fuse locations .. We will see.. hopefully someone has a better idea and can let me get right to it.. in the meantime the search continues..

Jack_88

Diagnosis is the most important step, and people can only give you ideas of things to check. With a component like that, there are 3 things that it could be. Lack of power, the data isn't getting where it needs to, or component failure.

eaks

I understand this... I need wiring prints and a full understanding of how the system works though.. It looks to me on the power connector there are three wires.. I would assume hot, gnd and remote (I am only guessing here) and I am going to go through with a multimeter I just would like to see if anyone has any more information.. I checked all the fuses under the rear passenger seat and they were all good (although once I check for voltage at the pins of the connector this will give me a better idea)..

If anyone has any other suggestions or things to check please let me know..

Just went out and measured at the connector to the audio gateway and did not see any voltage (powered on the head unit as well).. Although without wiring diagrams for this its very difficult to tell is this is the issue or not.

Thanks

tusabes

Why not just take it to mb? They can quickly diagnose and fix it

eaks

I only have storage insurance on the car right now and mercedes in my city is booking weeks in advance..Really hoping to get it fixed myself.. If I cant get it figured by the weekend I will book it in.. I just really wanna get it fixed and sold..

Thanks

calgary

Have you tried: MSG Mobile Solutions of Calgary on 50th Street SE
They were very helpful with my Cell Phone installation problems on my 2001 CL500

eaks

If I cant get it figured out I will give them a call..

Thanks for the lead..

eaks

Does anyone know where/how the audio gateway powers on? I believe I have checked all fuses and none of them are blown (I checked under the rear passenger seat, passenger side cabin fuse box and the 2 under the hood)..

Thanks guys

eaks

OK just an update.. I dug up some info with wiring diagrams for this specific audio gateway.. I tested for voltage at the plug and nothing.. I checked all fuses and they were good.. So I tried bringing 12v direct to the unit and bam it all works.. So I tapped the power off of the navigation system and now everything is fine..