Decoupled today the sensor and indeed it triggers instantly a fault code. This makes it somehow save to drive knowing that a fault code wil be triggered if the fluid level is getting too low. Space was to limited to tilt the reservoir far enough to see whether it is leaking from the cap under an angle.
For now I'm gonna monitor it and see whether the level is gonna drop in the coming days. Will keep you guys up to date. Sincerely.
Well, I guess the main question is… is there really a Filter in there ? Didn‘t see one….
Was a nice Video but he forgot to state if this actually fixed his problem… assume so ?
It's stated in the highlighted text from TIS.
"The oil reservoir contains an oil filter and an oil-level switch with float. In contrast to the oil-level switch, the oil filter cannot be replaced separately."
Not sure of course this is really the case? Maybe somebody else knows?
Seems to be fixed in this thread but different car: https://www.bimmerfest.com/thr…om-reservoir-cap.1194553/ but different car X5 and oil reservoir.
Thanks for all the reponses. The leak on the front sway bar is there already for a long time. And bubbles are also in the reservoir for a long time.
Just thinking. Can the internal filter of the reservoir be clogged where there is getting too much in the reservoir because the feeding line to the powersteering pump doesn't have enough free flowing capacity because and thereby overflows? Same as this youtube post:
Happy new year!
In addition I was thinking to disconnect the fluid level sensor and see whether I wil get an error message. I suspect it will if I read TIS "
On the oil-level switch, short circuit or line disconnection cannot be detected. A line disconnection is interpreted as oil loss. A short circuit is not detected."
If a message is triggered at least I know that I can drive further safely and I will get a message when the fluid is too low.
Furthermore I can tilt the reservoir and see if it leaks. I suppose it shouldn't if the cap is sealing properly?
Anybody with the same problem recently or ideas where to start?
Dear Experts,
My German is not so good so hopefully you guys don't mind that I post something in English.
Driving a BMW F11 2010 RWD. Fluid has been leaking a bit out of the cap of the oil reservoir of the hydraulic pump. In addition there is foam in the reservoir when the car runs but this is something which I already have a longer period (couple of years). There is enough fluid in the reservoir if I read it at the 20c line.
20241230_104126.jpgpasted-from-clipboard.png
The pump in my car is only used for the active roll bar system (dynamic drive). The shocks have there own closed system and the power steering uses an electric system with an additional battery in the back.
There are no fault codes of the system using ISTA. Furthermore no errors when I started the startup procedure run on it using ISTA.
Is there anybody who recently fixed this problem recently? Not sure where to start from here:
1) Replace reservoir and cap (32416782942)?
2) Replace the pump (32416850591)?
3) There is a leakage on the joint of the active rollbar on the front which is there already for a long time. Not sure whether this is causing the problem. Replace this? (37116778089)
4) Just accept the problem for now and monitor it closely because the system is only used for the active roll bar system and maybe top it up with new fluid if it is getting low?
5) Something else?
Thanks in advance!
I did a manual burn which worked good with significantly less 1.66 gram after manual. Will try it again.
Another thought is… were all Motor Adaptions reset after all these works ? = I don't know. I did a reset of all adaptations of the sensors with ISTA hopefully this helps.
Maybe AltinB1306 knows something. Maybe just first ask the tuner to restore default map. On the other hand the sensor number 5 (
13627808013) aftermarket is not that expensive. Will keep you guys up to date.
Dear MunichMark,
Unfortunately my distribution chain snapped around 40K kms ago. The cylinder head of the engine has been refurbished, chains has been replaced. Oil pump replaced. Inlet camshaft replaced, rocker arms, valves, timing case cover, etc....
The inlet has been completely cleaned and was extremely dirty. To overcome this I now asked the tuner to only open the EGR valve during regen. But now I have this annoying error which I don't get.
Maybe just flash the original file and see what happens. The strange thing is it only started after a couple of hundred kilometers so maybe it's just a faulty sensor. It would be this one than I guess (see screenshot)
Will ask the tuner to reflash the original file and see what happens. Keep you guys up to date.
In addition I was thinking something I don' understand:
- During exhaust gas pressure sensor test the exhaust gas pressure sensor before diesel particular filter gives normal values (see screenshot with green bars)
- During a cold engine the exhaust counter pressure test gives negative values. In ISTA is than mentioned that if values below 0 are reported you should renew the exhaust gas pressure sensor
I don't get the discrepancy between these two. Can the sensor still be faulty if it gives normal values in the exhaust gas pressure sensor test? Hopefully I make my question clear 
Could It also be a problem in the DDE ambient pressure sensor because that one is measuring lower in comparison to the other sensors? Do you change baseline characteristics or can you even change baseline characteristics of this sensor with a tune?
