hello together driving a cl500 bj 10/1999 306ps now the problem : I was for some weeks abroad my little brother the kasper wanted to drive mim car however was the battery empty the habns overbridge and are loose danger however did not come far un habn the car in a backyard workshop brought and for whatever reason the trottl (mechanic) 24 V gave to the bat totally failed then the motor control unit changed and experimented now I came yesterday de r motor runs now however until the battery is empty ! but the lights do not go tacho not electric seats, windows not etc until the back people are flashing at the side back something and back left in the trunk was a smell of the engine for the ZV was burned down now my question may be that the komfor control unit has what and the error is fixed without big wall or is it a barrel without floor and I sell as it is thanks in advance