I know how
Hi all of your brabus fans
I have a W124 brabus 3.6-24 model with this brabus tempamatic system my self,
One time when I went to brabus in bottrop (2007) I bought this sensor, because mine was dead.
It was very ekspencive and did only work 1 year, then it was dead to
Brabus then told me that they no longer provided this sensor anymore
I therefore toke mine apart and found the same Jack plug connector as in some of these pic´s here.
My sensor was not drilled passed the bottom of the sensor bus was located inside the very long screw (more safe, without sealant)
The sensor is made with the BC109 and the Base and the colectar is solderes together så that it use the diode pass trough the emitter of the transistor.
That is why you will need the ground wire as a solid shield against the very small low voltage signal.
The BC109 comes also in a metal house, and therefore you need to isolate it from ground as the collector is wired to the housing of the bc109.
othervice it will short the connection.
This is simple done with some of the eletronic crymping flex rubber thing you normaly use on wires.
Then it is puted into the bottom of the oil sump screw with some cooling paste to transfer the heat to the housing.
then you close the whole deal at the end / opening of the screw with some loctite epoxy 2 component glue stuff.
This worked just like the original sensor and looks the same.
But remember that the shielded cable is needed due to the low signal that the system measures around, very easy to disturb with noice.
This is my car:
Mercedes Benz W124 - BRABUS 3.6-24 - Bilgalleri.dk - Danmarks strste bilgalleri