BMW Repair: bmw 323i, bmw 323i, wheel abs

Question
had my brakes down now my abs and tracktion control lights stay on ive tried changeing my sensors but that didnt work i also disconected my battery and that didnt work can u help me

Answer
You said you changed your sensors.  Did you change the rear wheel abs sensors on both sides?  Also, often the connectors are full of dirt. If you haven't changed them, try that first.

They should reset without disconnecting battery.

Did this occur at the exact same time the brakes were done?  Not on as you were on your way to the shop, but immediately when you drove the car in the shop's driveway?  If so, return it to the shop. If not, it was coincidence.