JustDutch

Hello. I am new to the forum, and this issue has been racking my brain for the last 2 days. I just picked up a 04 (54 plate) 535d on Saturday and my CCC (iDrive) seems to be stuck in the boot loop. I have searched on several different places, and have tried several things with no real results. I am just looking for some advice on what I can try next, or what my next steps are to properly diagnose the issue before I start throwing parts and money at it.


- CCC stuck in boot loop

- disconnected MULF module AND disabled bluetooth in the software, no change

- removed Sat Nav disk, no change

- performed 3 button reset, no change

- tried applying pressure to different areas on the face plate by the CD drive slots, no change.

- system seems to work in the morning after sitting overnight, but not after that. I will have to double check it after I get out of work today since this is the first day that I can have it sit while I am not starting it since I'm at work.

- when I purchased the car, I knew this was an issue with it. When checking out the car, the system did boot up succesfully once, and everything worked fine, but this morning when I drove to work, the system was up, but there was no audio coming out, no matter how loud I turned the knob, the knob did however register pressing as it did turn the mute icon on and off. (I did not try turning audio up through steering wheel controls)


What would be my next "diagnostic" step here? Should I attempt to find a new navigation disc? Should I be looking at replacing the CCC unit? Maybe repair?


Thanks in advance!

FormerE30Owner

Replace CCC with refurbished CCC (new units no longer made) or with android unit. Mine is in the same state as yours, but since I can still use it when it is cold, I use a separate Navigation system when the CCC fails, so I am not going to replace my unit.

JustDutch

Thank you for the reply. I actually found someone that does a refurbishment for 250 pounds which includes a 1 year warranty as well as software upgrade. I think I may just go that route.

dingolfing

Sounds like your CCC is overheating. Check to see if the cooling fan on the back of the computer works or is clogged with dust.

SolidusAlex

Happened to me a few years ago. Forever loop, works sometimes, then eventually just dies. Used a little bluetooth speaker for music for some time lol. The problem isnt the monitor screen, its the CPU unit, behind the panel where the CD/DVD player area is. I went to my local junkyard and ripped one out of a 6 series and replaced the one in my 5 series and viola, back to normal! The only real work is removing your panel, a few screws, and the plugs. 15 min job, if your handy. Youtube vids on how to replace with ease. Unit cost me about $30 or so at junk yard. That was about 2 years ago and now its doing it again. I guess back to the junk yard i go, tomorrow. Godspeed.