Mercedes Benz G550 Technical Service Bulletin #LI27-60_P-049270
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.
Date: 1104042010 Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)
Page 18
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
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.
Date: 1104042010 Mercedes Benz Truck G 550 (463.236) V8-5.5L (273.963)
Page 18
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
