Navigation / Radio Performing Erratically
 

The Navigation Radio in my 2008 X5 4.8i (it has the upgraded radio) has started doing all sorts of funny things. It will freeze, reboot, have disk read errors, (disk is brand new from dealer). The other day, the Nav map was over the top of the main control screen and frozen there (but following the map). No buttons or turning off the car could take away the map. Until I put the car in reverse, then the camera came up and everything was normal. Yesterday, I could not control the volume of the radio...then the system re-booted by itself and everything was fine again.

Any ideas what to look for here?

There is a reset procedure for it, did you:rtfm:

What do you mean it has the upgraded radio? Was the radio replaced and then you have.these problems? How old is the battery? Who installed the battery?

If it is the original CCC unit they are known to have all kind of SW and HW problems. Sounds like a SW problem, if I were you I would try reprogramming first.

What I meant by upgraded is that it has the optional better stereo; all original equipment.

I don't know the age of the battery, or when or if it was replaced. I've only owned the car a few months.

How does one reprogram the radio?

I know when I got the car, I had a friend with an Autologic download and install a number of updates to the car...mostly all drivetrain related. It took quite a while.

While the Autologic showed that there were available updates to the radio/nav system, the folks at Autologic advised him NOT to do the updates to the radio as it often bricks the whole system. I hope that's not what you're referring to when you say to reprogram.

I know for my now departed Cayenne, when I bought a new Nav disk, it came with a new software disk, and it was easy to install the updated software into the PCM via the Nav dvd drive. Is there something like this for the BMW?

I'm not familiar with that. Can you tell me how to do it, or point me to where I can find instructions for that?

If battery is old and weak electrics can do flakey things.

My 2007 4.8l x5 needed a new battery a few months ago. The my 2007 x5 was built.in December 2006. This it's 3rd battery so 2015 - 2007 = 8 so 4 years a battery. Your battery should.due for.replacement

I repair these a lot, I always have a few at home. As a matter of fact, by now 80% of the pre-2006 navigation units need repair.
The main problem is the BGA chips start to develop a cold solders underneath them (figuratively said, BGA have no pins). Pretty much the same problem as the Playstation 3, Xbox, etc. If you try to update/reprogram yours and it has loose connections the update may not go thru and the unit will be completely dead. But if it is a HW problem this is imminent. I can send you a special recovery disks for the CCC if you want to try and can help you with instructions if you want to try to repair your unit.

http://i1362.photobucket.com/albums/...psuymx0pis.jpg

I really appreciate the offer and the great info. I may take you up on that shortly, as I must resolve this. What you said about the update possibly failing is probably exactly why the Autologic folks advise against their customers updating these units. It makes sense, how could a shop justify the risk of bricking a customers erratically functioning unit? They could end up buying the customer a new unit. But if it is a HW problem, I'd certainly want to repair it rather than replace the whole unit it if it's not too difficult. But while taking apart computers, laptops, or swapping a nav screen on my E53 is pretty much in my wheelhouse, if it's a matter of micro soldering, that's something I would rather have done by an expert.

However, I did check the battery out this morning, and it is at least slightly suspect. So I think I need to address that first.

With a VOM, after the car sitting all night, I got 12.35 V at the battery, and from my understanding, it should be more like 12.75 V. Not good.

I have a little Solar digital batter tester. That showed 12.49 V, but when set for the 900 CCA the current AGM battery is supposed to have, it showed 997 CCA. It also showed the green LED indicating the battery was good, but significantly, it also the yellow LED indicating that it's weak and needs a charge. So this afternoon, I'm going to put it on the battery charger for a few hours, and see the result. If the CCC starts functioning normally, I guess that means it's time for a battery, as there's no reason it should be weak...the car has been in constant use.

I really have no idea if the current battery was properly coded to the car, so it may not be getting the proper charge either. I could be wrong on this, but as far as I know, the only way to remedy a situation with where a battery was installed at some point in the past without being coded, is to start fresh with a new battery, and immediately code it...which I can certainly handle with a friend's Autologic.

Let me know, i will send you all info that I have.
There is another problem with Autologic and the devices on the MOST(optical) bus. The ICOM and OPPS, original BMW tools, are programming them thru a special MOST interface. Many people have tried to update the MOST devices with Winkfp, thru a standart OBD interface, I dont know of any attempt that was succeeded. It also takes enormously long time. I dont know if Autologic has a a MOST interface, but my guess is no.

Thanks!

Autologic does now have a fibre optic interface. I think it's an added cost option, so I gather not all Autologic users have this, but that's what we used to do the drivetrain updates on my car. Even with the fibre optic connection, some of the updates took a really long time, so if you used just the obdii interface, you'd be there forever. We used a Snap-on battery charger hooked to the car that has a special option for providing stable voltage to the car throughout the process.

Well, I replaced the battery, (new Bosch battery, properly coded), and I'm still having problems with the Nav/radio. It seems to take 2-3 minutes to start up after the car's been sitting for a while. I get the disclaimer message, but clicking the iDrive knob does nothing. Eventually the unit wakes up and performs normally.

Once the unit is up and running, if I shut off the car, and immediately restart the car, the nav/radio comes on immediately.

Well two days after the new battery, the CCC seems to be back to normal. It was not good at first, but got gradually better to the point where it is now working as it should. I guess it took some time for the car to stabilize the voltage level and adjust to the new battery. You would think it's a living thing adjusting to a transplanted organ.

So I would.conclude your nav radio is very sensitive to the voltage? Not until battery was adapted to did your radio work well again.

Good to hear it is Ok now. Hopefully for long.

Thanks again for your assistance and advice.

On to next BMW project....replacing the NAV screen on the SO's 325xi work beater, (waiting for the two special tools 651110 to arrive from ECS...)