Hello Folks and gurus on MB,

Am relarively new on the cars, used to handle bimmers.


The story of this vehicle starts on showing erratic readings on cluster for brakes BAS, then customer indicates that when cold vehicle use to stick on 1 gear and in several occasion while coasting use to stick to a given gear even tought there was a stop. If he let it warm go to work OK.

Hes usual garage told him to replace ESP module, he tooked to another garages and told him the same, he order a new part and send to original garage to replace, after took it away car started to have a shock while driving from 1 to 2 no normal AT driving , the more gas the harder the shock
Hes been driving the car on W mode and nothing happens such as shock when shifting.

Then while questionig the customer to obtain as much info as possible
HE told me that even before all this when car is left like two days without use battery discharged.

I believe there could be a current draw somewhere related to ESP or BAS
need some orientation and wirings to step over this problem

Guys I need ur help

Thanking in advance


Jean