Hello to all .. I remember seeing from one of the members , a PDF attached bulletin describing a Flash for the ECU needed to update software for the W215 V12 TT engine ECU .. I cant find it anymore , can anyone help me with a link to that post if possible . Thank you

 

Any idea what it does? And whether it matters if you flash anyway to a 3rd party tune?

It sounds like you hopped on a 600?

 

Yes I did .. what beast ! Just going through what I remember reading before , I know I have read many posts regarding the famous coil packs ... one of the things I remember reading was a bulletin by MB stating that to deal with some misfire complaints , a flash or update of the software , maybe firmware of the ECU must be done by MB





S-54_21-101 OCT 03 Engine Controls - ECM Flash Process Change


there is also another one :


Date: February 6, 2009
Order No.: P-B-07.61/47b
Supersedes: P-B-07.61/47a dated March 30, 2006
Group: 07
Revision History
Revision Date Purposeb 2/6/09 Revised Repair Informationa 3/30/06 Parts and Warranty Information Updated- 3/14/05 Initial issue
SUBJECT:
Model 215.379
Model 220.179
Model 230.479

Misfire Complaints
If you receive customer reports in the above model vehicles of misfire complaints, please check basic systems, read and analyze freeze frame data etc., perform diagnostic steps as outlined in "V12 Engine Complaints Diagnostic Tree" in STAR TekInfo (EDAC) and repair as necessary (in case of warranty use appropriate operation codes and time from Time Guide).
If a fault was diagnosed and a repair was performed as per the above, confirm if the condition was corrected. If the condition still exists, proceed as follows.
1. Check charge air coolant pump for function (i.e. current draw) and ensure there is no air in the system.
2. Perform repair as necessary.
3. Bleed charge air coolant system circuit.
4. Confirm if condition was corrected or changed.
Note:
Check current draw as described in DAS --> List of possible tests --> Check component M44 (charge air cooler circulation pump) --> Test current consumption of component M44 (charge air cooler circulation pump).

If all the above has been checked and a misfire on cylinder 3 (P2046), 4 (P2049), 9 (P204C) and 10 (P204F) together with P2043 only (no other misfire codes) is still present, proceed as follows.
1. Check the part number of the boost pressure control valve and replace if needed. (If the part number is A275 153 00 59 it must be replaced)
2. Flash the ME control unit to the latest level of software and perform SCN coding.

THis is what I found so far , but I remember a member posting the actual PDF sent from MB to their dealers or techs ..