Hi all (new member)

Can anybody help, my audio side of the display unit is not working (no red display) yet the sat nav and computer/tv is displayed on screen.

I have no display mode and no sound on screen. Can any body help please it is an E46 M3 and if it is a fuse can you advise which one as I haver no user manual.

Many Thanks

Hi all (new member)

Can anybody help, my audio side of the display unit is not working (no red display) yet the sat nav and computer/tv is displayed on screen.

I have no display mode and no sound on screen. Can any body help please it is an E46 M3 and if it is a fuse can you advise which one as I haver no user manual.

Many Thanks

There's a bunch of modules in the boot. Each individual of them represents a part of what you see on the display. The display itself is usually generated by the navigation drive or the video module, so that's why it's working.

It looks like your radio (BM24 or BM54 Professional) is dead. You might need to check the connectors, reseat them, check the fuse on the back of the radio (where the cable is attached) or worst case replace the radio module. They don't come cheap unfortunatly.

Here's a picture, where the radio is supposed to sit in the E39 (don't mind, that everything is bend, it's a picture from a crashed car):

The unit has a sticker like this:

Older ones are BM24, newer ones are BM54

If you have to buy a replacement unit, make sure you get one with the same connectors. The older ones had round pins, the newer ones square pins. There exist converter cables, but you might get the right thing in the first place.

/M

Hi my name is Andrew, I have a audio problem in my E38, everything working fine, screen, all buttons, but no sound>

But sometimes its comes on for 5 - 10 min, and then gone again for very long time!!!

Maybe someone can help me please? Maybe its because of sub?