[terraphantm]

Just clear all of them (I'm not sure the MSS54 lets you select individual adaptions anyway)

[mikerob]

Originally Posted by terraphantm

Just clear all of them (I'm not sure the MSS54 lets you select individual adaptions anyway)

I read the error code first and printed - shown below. Then cleared the adaptations and then cleared the error memory. The Service Engine Soon light extinguished. Then read the error code again. The error code is still in memory, but the SES light is still extinguished. Waited 10 minutes, started the car. Car started fine, however the SES light came back on... Any ideas about how to resolve?



E R R O R M E M O R Y R E P O R T -------------------------------------
Date: 11/11/19 18:01:30 ECU: MSS54DS0 JobStatus: OKAY Variant: MSS54DS0-------------------------------------------------------------
RESULT: 1 errors in error memory !-------------------------------------------------------------
154 Kurbelgehäuseentlüftung (English = crankcase ventilation)
Error frequency : 1 Logistic counter: 40
Motordrehzahl 0.00 1/min relative Fuellung 0.00 % Kuehlwassertemp. 23.00 Grad C Versorgungsspannung HR 11.40 V aufgetreten vor (rel. BZ) 1.40 h
0100 - Leitungsbruch o. Wert fehlt Fehler abgasrelevant OBD Fehler momentan vorhanden statischer Fehler ================================================== ===========

[terraphantm]

Okay in that case the only way I know how is with mssflasher. Do you have a license for that?

[mikerob]

I do not have MSSFlasher. I have SSS/Progman and Winkfp - but have never used these.

My other idea. It is a little bit caveman style, but I have used in the past on e30s, e36s and older E46s in various situations. I measured the resistance of the crankcase solenoid at 27.2 Ohms. At 12 volts this is about 5 Watts. So was thinking to install a ceramic resistor to simulate the crankcase ventilation solenoid valve.

Your thoughts on any other options.

[terraphantm]

Originally Posted by mikerob

I do not have MSSFlasher. I have SSS/Progman and Winkfp - but have never used these.

My other idea. It is a little bit caveman style, but I have used in the past on e30s, e36s and older E46s in various situations. I measured the resistance of the crankcase solenoid at 27.2 Ohms. At 12 volts this is about 5 Watts. So was thinking to install a ceramic resistor to simulate the crankcase ventilation solenoid valve.

Your thoughts on any other options.

That may work, I don't know how sophisticated the error detection is.

The MSSFlasher way would be to virgnize the DME and then restore the manufacturing data. When a "virgin" DME starts up for the first time, it detects some equipment automatically and sets a flag. I was hoping said flag would be cleared by clearing the adaptions, but I guess they can't make it that easy.

Maybe there's a flag to turn it off in the tune itself, though BMW does not seem to have used that (since the actual tune doesn't differ between cars built before and after the solenoid was added). Or really, simply deleting the error code might be good enough assuming the car doesn't change anything about how it runs when it thinks the solenoid is open/closed.

Edit: So from what I can tell digging through the disassembly, the DME isn't measuring resistance. It seems to have a minimum and maximum mass air flow difference that it looks for when the solenoid is open.

If you set K_KG_CONTROL (0xC166) to 0, it should disable the error checking routine and prevent the DME from actually trying to use the solenoid.

[mikerob]

Thank you for your assistance with this. My coding experience so far has consisted of changing settings in modules using Revtor's Profile in NCS Expert (with much success), and I have cleared adaptions and read error codes using INPA.

If you could just point me in the right direction with how to "set K_KG_CONTROL (0xC166) to 0 " I will figure it out, do more internet searching or ask for more guidance...Thanks, Mike

[terraphantm]

p0lar's old pdf should about cover it

[mikerob]

Originally Posted by terraphantm

p0lar's old pdf should about cover it

New reading material! I had not come across this one. Thanks!

[mikerob]

In the process of downloading the software outlined in the "DME How To document". I already have a cable since I use INPA and NCS Expert and the software below is stated to work with the same cable.

Looks like the three necessary software items are:
1. BMW Flash
2. BMW Logger - Question, I made a donation and downloaded the free version - should this work for what I need for this task?
3. Hex Editor - Question, I read through the referenced list in wikipedia, is there a general consensus about which is the simplest to use?

Also note, I used a dedicated laptop running Windows XP as my BMW (and VW) diagnostics computer.

Thanks - Mike

[terraphantm]

I'm not sure you need BMW Logger for this specific task. Unlicensed version can be used to clear codes and adaptions. Licensed version can log data, which can be generally helpful if you venture into changing how the engine actually runs.

As far as hex editors go - I like Hex Workshop. Not free, but trial version would be fine for now.