Mercedes-Benz A220 2020 Technical Service Bulletin # LI27-60_P-049270 Date: 110404

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.

Mercedes-Benz A220 2020 Page 38

Symptome

Steuergerat/Fehlercode