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Brabus Tempamatic

The modified oil temp sensor has been finished. Required a pilot hole to be drilled into the M119 drain plug, then extensive reaming with a Dremel till it was large enough to fit the temp sensor. I sealed both ends (and internally) using JB Weld, which can withstand double of what the max oil temps would ever get to, so good to go :cool:
 

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Guys ive just bought another tempamatic off ebay for my 500E.. this one is brand new and complete... the oil temp sesnor is a modified oil dipstick.. simply has a temp sensor on the tip!!

The same guy has another set on ebay.de if anyone wants one.
 
Since Brabus largely built these for non-500E w124's, will be interesting to see if that dipstick works on the 500E trans in terms of physical fitment.

Would imagine it should be fine.

talbir
 
thats a good point.. on first inspection the dipstick does seem a little short but checking on the EPC it seems the M116, M116, M102, M103, M119 all use the same dipstick... so heres hoping..
 
I know how

Hi all of your brabus fans :D

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 :mad:

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
 
Hi and welocme to the forum.You car is very nice,seen it before on the org forum
 
Pics

I just want to put up some photos I got of the system.
In the beginning I thought that it was a resistor sensitive to heat that was used for the system.

But they just use the transistor BC109 (BC108 and 107 and other don´t work!)

Like i Told, I just rebuilt the sensor, to it´s original state (if not better)
The problem with the original ones that brabus provide is that the insulation between the BC109 metal housing and the metal Oil sump screw is to weak and give up with time, due to the heat of almost 100 Celcius (M104 brabus 3.6-24 engine)
The wire at the opening of the screw also has a tendensi to brake open.

It is also very important that you uses the engine cover plates, othervice the air flow passed the bottom of the oilsump will affect the oil temp measurement as you drive faster it will read cooler and cooler.

Only the brabus sensor can be used, no other uses this BC109.

I can built them for around 65 Euro plus mail transfer, includes the oil sump screw with the sensor built in and tested to work and the jack plug at the other end.
Like you get them at brabus.

My own rebiult, has lasted longer than the one fitted by brabus now.

But you should be able to built them your self with a BC109, a balanced and shielded 2 wired audio cable and a new Jack plug and some 2 component epoxy glue (can withstand the heat far over the useable)
 

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more pics

Green diode in display = Outside Air Temperature
Yelow diode in display = EngineOil Temperature

Noticed that the Mercedes only jumps in ½ Degrees and the brabus one jumps in 0,1 degrees :D that´s very important :rock:
 

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