Mercedes Benz Truck GL 450 (164.871) V8-4.6L (273.923) 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.
2010-2020 Mercedes Benz Truck GL 450 (164.871) V8-4.6L (273.923) www.168motive.com Page 24
Attachments
Symptoms
Work units
Attachment
2010-2020 Mercedes Benz Truck GL 450 (164.871) V8-4.6L (273.923) www.168motive.com Page 25
2010-2020 Mercedes Benz Truck GL 450 (164.871) V8-4.6L (273.923) www.168motive.com Page 26
2010-2020 Mercedes Benz Truck GL 450 (164.871) V8-4.6L (273.923) www.168motive.com Page 27
Overview for GI27.00-P-046507
