Man tgx 18.440 2012: Retarder Intarder 3 est 52 Controller Error and Transmission Issues

Hello
I have a problem with the retarder in Man tgx 18.440 2012 A computer / controller est 52 is installed on the radiator ret, the computer display once shows an error, once it disappears (most often it lights).
After the diagnosis, the computer crashes "no communication". Installation checked with a meter and "bulb" on the power supply at ret and everything like ok. Pulling out the fuses and inserting helped for a while.
If the error is lit, the automatic transmission does not work (works only on manual gear shifting)
Of course, cruise control and ret
The driver itself needs to be replaced, or is it possible that the installation somewhere is defective, sensor some ...?
Maybe you have some experience, I ask because how do you know the new driver about 10 thousand net.
The car was also at 2 different electricians and they claim to be a driver.
thanks for any answers.
Maybe some bearing who can fix it .....

Communication flies, so I would look at it there.

I suspect that the fastest way to swap these drivers with another car and see what will happen ...

If you have the option of a replacement, it will be most likely, because with a can, if there was a problem, the error would occur all the time and here after the restart the fuse for a while is good.

I called the store that sells part to ZF and got the message that I was calling first asking about this driver.
Most often, when someone calls, they ask about the whole bundles of installations for ret, because this is most often a fault, according to them, he told me.
And that's why I doubted a bit if the controller itself has a failure ,,,, but can 2 electricians be wrong?
Therefore, it is probably best to replace (I do not have much opportunity at the moment). I put this question because maybe someone who has already solved this problem will come here or I'll be the first.

Hello, if you have no communication, I can rather check, I would check how much power the driver consumes, it is important because then you can fix such a driver, but it's not a small matter I was able to fix a few last year with this connection, watch out, because you could damage so did a few services and was problem new driver some 9500 net

Are you from around Częstochowa?
Today I picked up the car from the electronics and tried to fix it, but to no avail it still goes once and fails. After starting the car in the morning, it usually works, but after a few kilometers an error lights up. As if reacting to shocks or heat. Sometimes it doesn't even work since the morning.
PS. In Skuba they said 9,000 net

Added after 3 [minutes]:

It is still so that the retarder error lights up immediately and the gearbox works on the machine and the exclamation mark disappears when you press ok, and after a few km it lights up red and the gearbox goes into manual mode

Added after 1 [minutes]:

At what level should the current be?

Hello, depending on whether the driver is 7012 or 7015, tell me how much it downloads, I'll tell you if ok, but the training cost and whether the electrician measured the beam on which service it was, I will ask

Added after 10 [minutes]:

The car went on tour so only on Monday will be possible further diagnosis. If anyone would like to undertake a diagnosis / repair please contact me. Around Częstochowa - Lubliniec

Rokadi brought his driver to check the driver installation. After connecting everything was ok so stwierdxil that my driver failed. He took him to the company for verification - I wonder if it will be saved.
And the error in the controller is a lack of communication.

Diagnosis: broken processor, there is rather no point in repairing it. So the driver is replaced with a new or used one. When used again, another problem, because there are different software. Although it will work anyway, there will be different retarder braking forces ... right?

I have a question for people who opened such a driver. This is a hybrid Flooded with gel Is the driver on a regular PCB

Hybrid + gel

So most of the faults in this module are probably connections between the cubes and the porcelain plate.

Hello
Sorry to reheat an old topic, but I have a similar problem and don't want to start a new topic.
To the point, after a night stop, the retarder works for a while, let's use it twice, and brakes without a problem, the third time it does not brake only the car drops gears to keep the engine speed as high as possible, as if the car thought that the retarder is braking . There are no errors on the board. In one service they said that the temperature sensor triggered and shows a minus max. value, retarder beam to be replaced. In the second service they said that the sensor was good and they wanted to stretch it because it was a retarder driver. Someone may have had a similar problem? Generally, the retarder disappears as the temperature indicator on the board reaches half. Does anyone know who regenerates such a driver? Replace it with a used lottery, the more so that it costs little.
At this last service, a man ordered to drive the tractor itself and brake with the retarder, distance 4km, braking every now and then the retarder works, after connecting the trailer loaded 7t, braked twice from 60km / h to 40 on the same distance and after 3 attempts no braking by retarder only breaking gear.
Thank you as someone read it in full. Regards.

I have the same problem, it starts 2 times, then when I catch the water temp it doesn't work. You came what's going on. ? ?

Unfortunately, we are constantly struggling with the problem, the fluid temperature sensor has been replaced, and then the same.

And what if the intarder works but after adding gas it should let go and drive and the speed is not driven? and does not accelerate until after retarder off?

Buddy, did you buy a temperature sensor without the entire beam?

The same sensor, supposedly used, is functional. It didn't work, and I don't drive this car anymore, so I don't have to worry, but as far as I know, the retarder does not work so far.

You can send photos of this sensor if you have. I thought the sensor was available with the entire beam

Unfortunately I do not have. I mean, you know if you find someone with a beam and you cut this sensor, it is available without the beam ? and so it does not appear independently.

Misio89 wrote:

The same sensor, supposedly used, is functional. It didn't work, and I don't drive this car anymore, so I don't have to worry, but as far as I know, the retarder does not work so far.

The driver has fallen.
Producers Man, Daf, Iveco hanged it 30 cm above the ground. New ... expensive but will serve. The drug does not give a guarantee. To fix it not like a hybrid.
You can set up an electronics emulator. There will be no errors, the gearbox will select the gear correctly, but the Intarder will not be usable ..

Misio89 wrote:

In one service they said that the temperature sensor was released and shows a minus max. value, retarder harness to be replaced.

Yeah, only that the measurement of the oil temperature, if it is so, the temperature value shows only above the physical 50 degrees .....

Misio89 wrote:

In the second service, they said that the sensor was good and they wanted to stretch the costs because it is a retarder controller.

Do not stretch the costs and fix ... if the driver loses communication and the machine stops working and the power supply is ok, then the driver is in the bin.

coralgol1976 wrote:

Producers Man, Daf, Iveco hanged it 30 cm above the ground. New ... expensive but will serve. The drug does not give a guarantee. To fix it not like a hybrid.
You can set up an electronics emulator. There will be no errors, the gearbox will select the gear correctly, but the Intarder will not be usable ..

Exactly, if someone does not want to have an intarder and have peace of mind with errors and have an automaton, an emulator is installed and years, the controller is mounted on the frame and often corrosion occurs between it and the intarder housing, which distorts it and causes damage, and has an error due to temperature.

Maybe someone will tell you which oil temperature sensor it is. It is the one mounted at the bottom of the oil cooler and exactly on the line or the one mounted in the intarder housing

Check it out, post 2 has everything described.
https://www.elektroda.pl/rtvforum/topic3129993.html

I found such a sensor without a beam from scani, I wonder if it will fit?
https://allegro.pl/oferta/czujnik-temperatury-oleju-retardera-scania-r-9296929784? APIfeed=aa34192d-eee2-4419-9a9a-de66b9dfae24 Przedsiębiorstwosource=google C5% 9Bci + car + - + Engines + and + gear% C4% 99t & gclid = EAIaIQobChMIp7yx_57Q7QIVxQh7Ch2qSwccEAQYAiABEgLATfD_BwE

Added after 1 [minutes]:

And here's the second sensor. Maybe it makes no sense to buy a whole bunch?