08 BMW 535i Sound System Not Working/ Stuck in Mute Maybe? Help Pls
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08 BMW 535i Sound System Not Working/ Stuck in Mute Maybe? Help Pls
Hi
been on this forum for several months, first time poster.
I recently purchased a '08 535i, production date is late 07. this car had a after market system before i purchased it and it was taken out by the seller, and now i am restoring the factory system.
Its a Hifi Non Logic 7, has the wide screen navi (e60 module1). Amp in the trunk does work.
My main issue is there is no sound from any entertainment option, and also no chime when door is open and key in ignition. I noticed my other 05 545i does have chime until head unit main harness is disconnected.
amp in the trunk is working, all the wires do have a reading and power wires do have voltage(tested with multimeter). iDrive & navi powers on and works fine. I cannot increase the volume, Seems like its just stuck in mute or does not have a way of turning volume on. Steering wheel buttons dont help.
All wires are connected properly, i took apart every panel and harness front to back to make sure all connections are good. Fuses are all good. I did do a hard reset with volume+both eject buttons. I also disconnected the battery over night.
Also, when i put in a CD, it reads it but does not actually play it, timer on a song is still at 0:00, DVD side also seems like it works fine and spins the disk.
So far this is all i am noticing, I would really appreciate any input or advice, possibly something else i can check or cross reference, I searched the forum but did not find anything or a case similar to mine, sorry for the long write up.
Thank you in advance.
been on this forum for several months, first time poster.
I recently purchased a '08 535i, production date is late 07. this car had a after market system before i purchased it and it was taken out by the seller, and now i am restoring the factory system.
Its a Hifi Non Logic 7, has the wide screen navi (e60 module1). Amp in the trunk does work.
My main issue is there is no sound from any entertainment option, and also no chime when door is open and key in ignition. I noticed my other 05 545i does have chime until head unit main harness is disconnected.
amp in the trunk is working, all the wires do have a reading and power wires do have voltage(tested with multimeter). iDrive & navi powers on and works fine. I cannot increase the volume, Seems like its just stuck in mute or does not have a way of turning volume on. Steering wheel buttons dont help.
All wires are connected properly, i took apart every panel and harness front to back to make sure all connections are good. Fuses are all good. I did do a hard reset with volume+both eject buttons. I also disconnected the battery over night.
Also, when i put in a CD, it reads it but does not actually play it, timer on a song is still at 0:00, DVD side also seems like it works fine and spins the disk.
So far this is all i am noticing, I would really appreciate any input or advice, possibly something else i can check or cross reference, I searched the forum but did not find anything or a case similar to mine, sorry for the long write up.
Thank you in advance.
Last edited by dmoem; 04-20-2014 at 11:46 AM.
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Sounds like you have a break in the MOST BUS. Check all the MOST connections and modules. Check to see what options came on your car, CD, DVD, Bluetooth, etc. If the MOST ring is not complete none of the modules will work. How do you know the amp is working? No sound at all means one of two things, either the amp is not working or the MOST ring is broken. The MOST network comprises of the Head unit (in your case the CCC), CD (in glove box), Bluetooth and Amp (left side of trunk under the trim).
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Sounds like you have a break in the MOST BUS. Check all the MOST connections and modules. Check to see what options came on your car, CD, DVD, Bluetooth, etc. If the MOST ring is not complete none of the modules will work. How do you know the amp is working? No sound at all means one of two things, either the amp is not working or the MOST ring is broken. The MOST network comprises of the Head unit (in your case the CCC), CD (in glove box), Bluetooth and Amp (left side of trunk under the trim).
amp has voltage and i also put the amp into a 750i with the same sound system and it was working.
I will recheck everything and post back. At first I did do a VIN decode and matched options, then started by checking each option and worked from there.
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I had a similar issue when installing Technic's harness for external amp. It was the main harness that plugs into the rear amp. Somehow one of the connector pushed itself loose when inserting it back on the amp.
So pull off the amp harness and re-inspect all the connection, then reseat it and make sure the security collar slides all the way in the lock position.
So pull off the amp harness and re-inspect all the connection, then reseat it and make sure the security collar slides all the way in the lock position.
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I have had worst issues with the same model 2008, 528i this week. All of a sudden, all the screen/idrive went suddenly blank and I have lost navigation/audio and sound system. It is in the shop as of right now. I took everything apart, check all fuses and couldn't find anything wrong with my weak knowledge.
Also, does anybody know if it is possible to retrofit a high HiFi non Logic 7 to a used Logic 7 system amplifier? Looks I have the same previous system than dmoem here.
Also, does anybody know if it is possible to retrofit a high HiFi non Logic 7 to a used Logic 7 system amplifier? Looks I have the same previous system than dmoem here.