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2020 Mercedes Benz Truck ML 350 Technical Service Bulletin # LI27-00_P-0485525 Date: 120917

2020 Mercedes Benz Truck ML 350 Technical Service Bulletin # LI27-00_P-0485525 Date: 120917



A/T - 2-3 Upshift Slip During Initial Cold Acceleration



2-3 upshift slips slightly one time



Topic number LI27.00-P-048552



Version 5



Design group 27.00 General



Date 09-17-2012



Validity Transmission 722.9 with engines 273, 272 and 642



Reason for change Model designations with engine 642 and engine 272 for which there is a remedy have been added under Validity



Complaint:



After a cold start, slight slippage may occur in the 2-3 shift when the vehicle moves off for the first time.



Cause:



A full basic charge for the K1 piston cannot be guaranteed with a cold start. This means that the plate contact pressure must still be built up, which



can lead to a single brief slip of the gearshift.



Remedy:



Vehicles with engine 272, engine 273 and engine 642 in combination with the electrohydraulic controller unit A220 270 23 06 or A220 270 24 06 ->



Flash transmission control unit.



Important:



Observe the list in the attachment for vehicles with engine 272 and engine 642 because this software is only available for these model designations.



2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 24



Attachments



Symptoms



Work units



Attachment



2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 25



2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 26



2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 27



Overview for GI27.00-P-046507

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