BMW F30/F31 automatic jerks or pulls away slowly
F30 automatic jerks or shifts roughly when cold, is it a fault?
When cold, shifting can be rough in the lower gears, and it smooths out as the gearbox warms up. In an xDrive car the winter mode keeps the revs higher and shifts more slowly so that the transmission oil warms up. This is normal.
Why does the F30 automatic pull away slowly in slippery conditions?
On slippery surfaces the traction control deliberately makes for a gentle start so the car does not spin its wheels. Eco mode and the gearbox's winter program also slow the throttle response and prevent downshifts. If the car responds better after pressing the accelerator harder, eco mode was on.
When should F30/F31 automatic jerking be investigated?
If the jerking does not stop once the gearbox has warmed up or the car does not pull away normally, first read the fault codes with a diagnostic tool suited to BMW, not a generic tester. Also make sure the gearbox has oil that meets the manufacturer's requirements.