[poki123]

Hi all,

I have some strange problems with the BMW F10. The background story from the owner is that the car was parked for a couple of weeks and after this time battery was low so they started the car from jump cabels. After this car indicated a lot of errors in the cockpit like Powertrain, DSC, SRS, Lane assist, Pedestrian protection, power steering, etc... Car is starting normally, and power steering is working in 1 of 10 car starting and is limited. There is no communication with modules on FlexRay at all like in the attached pictures below. All of the power supplies to modules are ok FlexRay cables are also not braked or shorted.
I don't know that thing about it. Broken all of the modules on FR? 

Vin: WBAFR71050C262275

Thanks for any advice.

   

[user_530d]

Your Flexray ports on ZGW are closed or defect. Open up the ports with tool32 and make flexray init.

[Siki78]

Hi all,

I have some strange problems with the BMW F10. The background story from the owner is that the car was parked for a couple of weeks and after this time battery was low so they started the car from jump cabels. After this car indicated a lot of errors in the cockpit like Powertrain, DSC, SRS, Lane assist, Pedestrian protection, power steering, etc... Car is starting normally, and power steering is working in 1 of 10 car starting and is limited. There is no communication with modules on FlexRay at all like in the attached pictures below. All of the power supplies to modules are ok FlexRay cables are also not braked or shorted.
I don't know that thing about it. Broken all of the modules on FR? 

Vin: WBAFR71050C262275

Thanks for any advice.

If you need help write me pm

[schaeublew]

I would try a simple solution first.

1. Install a fully charged, intact battery
2. Delete all error memories
3. Disconnect the battery for approx. 1 hour
4. Then reconnect the battery and read the error memory again

If that doesn't help, you have to continue troubleshooting the FlexRay. Check the bus signal with an oscilloscope, possibly disconnect one control device at a time from the bus and check the signal for changes.

[poki123]

The problem is solved.

There was a DSC module defect and sometimes lost resistance on FlexRay pins. There was a connection to MCU but without termination resistance. Replace and coding fix it.

[armenh7]

The problem is solved.

There was a DSC module defect and sometimes lost resistance on FlexRay pins. There was a connection to MCU but without termination resistance. Replace and coding fix it.

Did you measure resistance with the bad DSC module? if so, what was it reading? I'm finding online good values for proper termination is between 80 - 110 ohm.