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My 2014 e63 has been showing "PRE-SAFE functions limited See Operators Manual" on startup.
I ran a Xentry diagnostic and pulled:B229B04 The multifunction camera has a malfunction. There is an internal fault.
Xentry seemed to indicate that the module is bad, and needs replacement. Before I pull the trigger on that though, has anyone come across this error before and not needed to replace the camera? Are there other diagnostic steps I should take?
For what it's worth I have never seen this reported on w212.
however on the w213 this happened and the owner disconnected the harness to the front camera and cleaned the connectors and re installed and it worked fine
For what it's worth I have never seen this reported on w212.
however on the w213 this happened and the owner disconnected the harness to the front camera and cleaned the connectors and re installed and it worked fine
Thanks, I didn't even think of that.
Originally Posted by trigital
Tick the fault code and press Continue/Test on bottom right button.
...but the "internal fault" is quite obvious translation
If I remember correctly, that's what gave me the explanation of the fault code, remedy for which was "replace the unit". Seems like that's the recourse for now.
My 2014 e63 has been showing "PRE-SAFE functions limited See Operators Manual" on startup.
I ran a Xentry diagnostic and pulled:B229B04 The multifunction camera has a malfunction. There is an internal fault.
Xentry seemed to indicate that the module is bad, and needs replacement. Before I pull the trigger on that though, has anyone come across this error before and not needed to replace the camera? Are there other diagnostic steps I should take?
Thanks in advance!
How often do you get the "PRE SAFE LIMITED" warning message:
Once nearly every day... or seldom like twice a month??
This is really a network disruption of the participating modules. Not just one bad one.
For what it's worth I have never seen this reported on w212.
however on the w213 this happened and the owner disconnected the harness to the front camera and cleaned the connectors and re installed and it worked fine
pulling the connector on modules with pressed-pins (aka. "solderless"...) can help or hurt that module by shifting factory loose pins. MFK oxidized olderless pins
The best way to gain basic reliability is to not have any poor connections.
Last edited by CaliBenzDriver; Apr 13, 2025 at 12:29 AM.
It seems your MFK has gone into complete failure. DistronicPlus needs it to see lanes markings besides long range radar sensing obstacles.
This module is built to be extremely hot even before sun bakes it through windshield.
A working MFK module can not be handled after 5mn...
Once the heatsink compound has dried out, heat ages components quickly (audio Amp does that too).
-- CLEAN inside windshield area of 2x camera! It does get dirty.
-- CLEAN the back side of radar plastic cover if you can.
-- SOLDER pins of the replacement unit and apply fresh heatsink compound now.
-- Take 5mn to witness your working replacement MFK climb to sizzling temp... normal.
-- Vent holes drillings plus effective heatsink would be a welcome improvement for this particular module.
Last edited by CaliBenzDriver; Apr 13, 2025 at 03:14 PM.
Yeah, but the MB engineers already calculated all that, so maybe like in any engineering assumptions, elimination of cause will have to be enough for the effects as well,
It's just a processor fault, nothing related with the solderless pins.
Yeah, but the MB engineers already calculated all that, so maybe like in any engineering assumptions, elimination of cause will have to be enough for the effects as well,
It's just a processor fault, nothing related with the solderless pins.
oxidized unsoldered pins is 90% likely the source of failure causing both PWR surges and CAN issues.
Soldering oxidized junctions brings performance above factory condition.
OP has an used replacement unit coming already.
There are modules more simple to work with than MFK due to crimpings.
FUNNY thing is the high-power defroster tracks 2x2 run in/out of this module.
So the input pin tiny surface contact gets a workout to oxidize.
Last edited by CaliBenzDriver; Apr 14, 2025 at 02:21 AM.
Your MFK is toasted. Been there before, mine is a C217 tho. Be patient with the MFK learning, the distance is very tricky. If xentry says failed just keep adjusting the distance between target board and bumper.
So... replace the unit...very easy to copy the coding and software from this camera and paste to any second hand camera with the same Hardware number.
hello, I am having the same MFK malfunction issue on my X218 FL. Xentry shows this camera is linked to SMPC212 module. I have not decided to order the 2nd hand copy of the same part number yet, but if i do, regarding coding, all i need is to copy the original coding of the smpc module on dts-monaco before removing the old camera, then install the 'new' camera' , and load the original coding of the smpc212?
hello, I am having the same MFK malfunction issue on my X218 FL. Xentry shows this camera is linked to SMPC212 module. I have not decided to order the 2nd hand copy of the same part number yet, but if i do, regarding coding, all i need is to copy the original coding of the smpc module on dts-monaco before removing the old camera, then install the 'new' camera' , and load the original coding of the smpc212?
If indeed the camera needs to be replaced, then yes it will be enough to flash the same software for accepting the original coding and to calibrate after all done
It seems your MFK has gone into complete failure. DistronicPlus needs it to see lanes markings besides long range radar sensing obstacles.
This module is built to be extremely hot even before sun bakes it through windshield.
A working MFK module can not be handled after 5mn...
Once the heatsink compound has dried out, heat ages components quickly (audio Amp does that too).
-- CLEAN inside windshield area of 2x camera! It does get dirty.
-- CLEAN the back side of radar plastic cover if you can.
-- SOLDER pins of the replacement unit and apply fresh heatsink compound now.
-- Take 5mn to witness your working replacement MFK climb to sizzling temp... normal.
-- Vent holes drillings plus effective heatsink would be a welcome improvement for this particular module.
hi, today morning, when everything was cold, the camera started working for the first 5 minutes. Once it started to get warmer, it went bad again. Does it tell me that the heating compound under the metal plate is no more effective? I am touching the camera after 5-10 minutes, and it gets warm, but not like sizzling temperatures, even after 1 hour of operation. Seems like if i remove the old heating paste and replace with a new one, i could have my old camera working again. fingers crossed
hi, today morning, when everything was cold, the camera started working for the first 5 minutes. Once it started to get warmer, it went bad again. Does it tell me that the heating compound under the metal plate is no more effective? I am touching the camera after 5-10 minutes, and it gets warm, but not like sizzling temperatures, even after 1 hour of operation. Seems like if i remove the old heating paste and replace with a new one, i could have my old camera working again. fingers crossed
yes absolutely! There's a good chance you're right: dry paste is keeping heat concentrated on the local CPU's...
If I did have to re-open my MFK I would drill generous ventholes the enclosure is missing.
yes absolutely! There's a good chance you're right: dry paste is keeping heat concentrated on the local CPU's...
If I did have to re-open my MFK I would drill generous ventholes the enclosure is missing.
unfortunately, nothing changed. the camera still works when everything is cold, but after 5-10 minutes of operation it is going bad. i am still trying to find out what is causing to malfunction once the parts are getting warm.
unfortunately, nothing changed. the camera still works when everything is cold, but after 5-10 minutes of operation it is going bad. i am still trying to find out what is causing to malfunction once the parts are getting warm.
did you repack fresh heat compound?
I trust soldered were done right.
If you can't get this unit to cooperate get a used one.
did you repack fresh heat compound?
I trust soldered were done right.
If you can't get this unit to cooperate get a used one.
yes, i applied a good quality fresh thermal paste. After that, i noticed the MFK's metal plate was getting warmer quicker than before, but not like sizzling temperatures, just a nicer warmer surface it started to have during operation. Not sure what you mean by 'trust soldered were done right'. Those tiny pins you showed in your earlier message was perfectly tight and i did not see any corrosion on them.
getting a used MFK is what i am currently on. they are plenty on ebay and are around 200-300 USD with identical part number, so i am not worried to find a replacement one. just i am not rushing
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