Mercedes W211. Error 9092 Additional Battery SBC Systems / Why does not work SBC Hold, SBC Stop

Possible error codes 9029- Constructive assembly E40 (the lid of the illumination of the trunk lid space) is faulty or the wire to the structural assembly is short-circuited or open; 9071- The K57 / 2 structural unit (additional battery relay) is faulty or the signal wire to the structural unit; 9092-Constructive assembly G1 / 7 (additional battery) is faulty or missing; 9051- Disconnection of consumers, stage 1; 9050- Disconnection of consumers, stage 2; 9080-Unreliable value from the S142 node (switch of the blocking element of the trailing device); 9128 The control unit supply voltage is too low (low voltage); 9470 R22 / 3 (additional heater) (Electric fault) Music Declan DP Music Sandcastle" by Declan DP Attribution 3.0 Unported #AmazingRoadTV