Electric power steering

[FHS72]

Hello everyone, i need your help please. I own a panamera s hybrid 2012, having problem with E-power steering , not working, ordered new one and replaced it, but no success!! At the bigining the fault was “servotronic unit” that i couldn’t find anywhere! When i removed the old E-pump i thought the control unit is inside, don’t know if i was wrong, that’s why i ordered the new one. 

At this moment Piwis can’t see the new one, front-end electronics fault codes c11005(front-end electronics control unit, function restriction), 80400E(front-end electronics control unit, power steering function restriction), 80410F (power steering, limp-home..I appreciate any help. Thank You 

Edited January 27, 2019 by FHS72

[FHS72]

Hi all..yesterday I’ve checked all related fuses, and contacts on the E-pump, all seems good. I managed to replace the steering rack sensor to see if its faulty, still the same the E-pump didn’t start! Next i will check the the front BCM..

[FHS72]

Hi, after an hour of work, I’ve reached the front BCM module under dashboard, opened it and at the first look i found a bad transistor? Maybe it’s the problem?

[RFM]

Interesting, thanks for the pics and explanation, i have no experience with it but it seems that this has to do with it, remains the question what is the cause of the faulty transistor? Good job, please keep us posted.

[FHS72]

4 hours ago, RFM said:

Interesting, thanks for the pics and explanation, i have no experience with it but it seems that this has to do with it, remains the question what is the cause of the faulty transistor? Good job, please keep us posted.

Hi, for now i will firstly replace the MOSFET as it will be more easier and than will give it a try, (searching for the parts). If replacing the BCM module it have to be coded with PIWIS to get it work, i have it but maybe it will ask for imo codes?! The cause could be the battery or a short on wires..

[FHS72]

Hi everyone, today i received the Mosfet and replaced the faulty one on the BCM board, after that i reinstalled in place the unit but unfortunately the same thing happening, the E-power steering pump not activated. The new E-pump is not showing up on Piwis, still not detected. Maybe i have to try the old one after repairing the BCM unit? Will give it a try..BTW i noticed that the electronic steering lock is not working too, can’t hear the click noise when switching the keys, and this unit also not detected by Piwis.

[FHS72]

Hello everyone. Some updates on this issue, i ordered a BCM unit and yesterday i tried to replace it, after coding and writing the data on it, of course the key will not simply operate! It will need the online programming to get it work on the new one. Looking for solutions as i don’t have dealers around.

[JFP in PA]

7 hours ago, FHS72 said:

Hello everyone. Some updates on this issue, i ordered a BCM unit and yesterday i tried to replace it, after coding and writing the data on it, of course the key will not simply operate! It will need the online programming to get it work on the new one. Looking for solutions as i don’t have dealers around.

 

Afraid you are going to need access to a current PIWIS system to do this.

[FHS72]

15 minutes ago, JFP in PA said:

 

Afraid you are going to need access to a current PIWIS system to do this.

Yes definitely..i think i will need to find someone who have access to do this through my PIWIS over the net.

BTW i didn’t found a steering lock controller on the steering column! Maybe not equipped on hybrid?!