BMW E60 / E63 Active Steering Repair: Driver Failure, Voltage Issues & Diagnostic Tips

Hello

I have a problem with the Active Steering system in BMW. In fact, I am almost sure (ALL others excluded) that the driver has failed and here is a question for one of the best professionals in this country. Can he be saved? I checked it thoroughly with the diagnostic program and it seems that the processor does not get up. Is it dead or no power? How to check? The power supply suggestion is due to the fact that the error that appears after connecting the interface is an error with too low supply voltage - below 7.5 V. The voltage at the connector has been checked and is OK, so it's a problem with the current inside the controller. I am attaching a photo and thank you very much in advance for any tips and suggestions.

Do a BGA reballing first.

I forgot to write that the driver refused to cooperate when the alternator failed. After repairing the Active Steering alternator, it no longer worked. Earlier there were no problems with him, so it certainly is not a coincidence. Do you think it could be a matter of a problem with the connection of the processor to the board, but in the current situation, does it look like the death of a component?

Try replacing this item. Was the alternator overcharging or not charging?

First of all, I would like to thank you very much for your interest in the topic. If I manage to save this driver, I publicly commit myself to put something good to quench my thirst Sometimes the alternator overcharged, other times it didn't. I did not notice it right away, because the car never refused to obey due to the fact that the moments when it did not load and loaded smoothly and quickly intertwined. I noticed it only on the last route before the alternator was repaired, when all possible controls went out and I started the charging voltage check function on the meter. I was far from home, and the car, after restarting, drove as it should and everything went out, so I concluded that there is no need to "tow". I will add that AFS was working properly until the very end. In the backyard it was fired from the cables 2-3 times and a few meters to the garage it was already "remaining electricity" and again the disco on the clocks. From that moment it was not fired until the alternator was repaired. After assembling and firing, I noticed the symptoms and errors listed in the first post. Coming back to the topic, isn't the selected system sometimes responsible for powering the electric motor? Can the processor also power it? As I mentioned before, after playing with Inpa it looks more like a CPU problem. I absolutely do not question knowledge, especially since mine is definitely much lower, I'm just trying to do something like brainstorming and bring this dead man back to life together

But it is with the communication module and what errors exactly? If there is communication, try flashing the disem or ista driver first.

bledy:

0x612C hardware error control device
0x613A Supply voltage Kl. 30 (

Due to the fact that I did not want to have a grounded car, I bought a "new" controller. After rewriting the VIN everything started working as it should. Nevertheless, I will try to fix this one and if I find anything I will write here. If anyone has any suggestions, ideas and advice leading to saving the driver, thank you very much in advance and I will try to repay you somehow

The controller was taken by my uncle, who repaired various controllers in the mines. He immediately ruled out damage to the element marked a few posts above and rather does not suspect damage to the processor. As soon as I know anything, I will of course let you know

Hi
I recently went through a similar topic. https://www.elektroda.pl/rtvforum/topic3400030.html#16851625
The cause of my problems was a spilled batch in mpc (all FFFF). You can try to read the contents of the memory with BDM (due to the fact that it is built like edc16) and check how "effected" you can copy the batch from the new to the old.

Hello
I have the same problem with the title driver, does anyone have info on how to connect bdm with this driver to read the memory? Unless there's another way to fix on a 612C driver internal error?

BDM as in EDC16, points from the right having the controller connector facing each other. The problem will probably be with the charge.

Hello,
my AS controller was probably flooded (water on the passenger floor) but after opening it inside it was dry as a bone and no signs of corrosion. Do you have any schematics for this controller to at least check the voltages?
P.S. apart from the water on the sidewalk (leakage of the door, specifically polystyrene between the bacon and the door), I struggled with the problem of a weak battery, I fired on the cables 2-3 times. I do not know if, as you write, maybe the batch was damaged from voltage surges. What do you think?

Please
https://www.newtis.info/tisv2/a/en/e60-530d-l...ring/power-supply-for-active-steering/rcHMMkO