Saturday, February 20, 2016

Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963) Automatic transmission 722.9 switches to limp- home mode

2010 Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)     Automatic transmission 722.9 switches to limp-

home mode

Vehicle: All Technical Service Bulletins

A/T - A/T 722.9 Switches To Limp-Home Mode

Automatic transmission 722.9 switches to limp-home mode

Themen-Nummer      LI27.60-P-049270

Version               1

Konstruktionsgruppe    27.60 Gearshift, control

Stand                 04-04-2011

Gultigkeit             All models wikth transmission 722.9

Anderungsgrund

Beanstandung:

Automatic transmission switches to limp-home mode or has no power flow (e.g. 3rd gear is not reached).

Note:

Fault codes P2502 and/or 2505 or 0894 and/or 2711 may be logged.

Attempts must be made to reproduce the problem.

Ursache:

K1 piston may be damaged (adaptation data for 2-3 shift may be at positive limit).

Abhilfe:

If the complaint can only be reproduced for the upshift from gear 2 to gear 3 or if the 3rd gear cannot be reached, there could be a defect in the K1

piston.

1.     Replace complete multidisk clutch K1 as per EPC.

2.     Then re-adapt the vehicle.

Symptome

Steuergerat/Fehlercode

Arbeitswerte

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