MK4 issues
 

Long time reader, first time poster :yikes:

I've always found the resources on this site to be invaluable, especially when I purchased my first BMW w. nav back in '05.

I recently retrofitted the nav system to my (new to me) 2004 330ci. I purchased the nav retrofit loom new, but all the other parts (BM53 tuner, 16.9 widescreen, MK4) from eBay. Ever since retrofitting, I've run into the following issues:

1. The MK4 does not want to output audio. I received the unit with a modified firmware (M5 splash screen,) and a main menu that had the "code" and "Aux. Ventilation" entries. The system would freeze when the "settings" menu was selected, and the voice prompts on the nav would quiet the volume of the radio without playing the actual voice. I first installed V.32 over the modded firmware, which fixed the freezing on settings, but not the absence of voice prompts. Then, I installed V.21, which set the unit to Euro mode and wiped the coding for the nav, and then re-upgraded back to V.32. At no point did the voice prompts come back.

2. The MK4 does not sleep. Leaving the trunk open, I can see that the unit's power remains on far past the 15 min that it usually takes for a normal MK4 to shut down. Reflashing firmware has not fixed this issue. Furthermore, I do not see the =BMW= splash screen upon opening the door. Only when the system reboots after a freeze do I see this screen. Pressing the clock button on the nav unit with the screen off renders a black screen with the blue bar containing the time and date at the bottom.

It's worth noting that I have tried a different MK4 in this car running a stock V.32 image and none of these issues have appeared.

Thoughts?

Thanks,

Hoody

Have you read thru Joe Puma's retrofit? http://www.xoutpost.com/articles/all...system-x5.html

There may be some tips there if you haven't. In general it sounds like the i-bus isn't seeing the nav system properly. I'd check that wiring first and foremost.

What version radio module did you install?

Thanks for the quick response! I read over Puma's retrofit, and I've checked my connections at the front of the car (where the nav retrofit connects to the radio connector at the front,) the nav connectors in the trunk, and the radio tuner wires. The radio tuner is a BM53 which supports Aux and Sirius. Is there anyway to diagnose the iBus (logging codes, etc.)? I have the P.A Soft cable and software, and have placed an order for a suitable cable for NCSExpert...

UPDATE: I have also verified that the rest of the car goes to sleep (as the light on the transmission selector surround goes off)

Your mk4 is faulty mate.

If the light does not go out then the ibus does not go to sleep and this will flatten the battery.

the ===BMW=== only appers when the ibus starts up and the mk4 boots, if its not going to sleep then it never boots ergo, no splash.

Code and AUV vent will auto disable and then disappear on the e46 as they were never options.