PRELIMINARY WORK
1 – Removing the luggage compartment floor trim panel
Remove luggage compartment floor trim panel (1).
2 – Disconnecting the battery earth lead
Prerequisite
Ignition is switched off.
Equipment specification with the intelligent battery sensor (IBS):
Slacken nut (1).
Do not loosen the hexagon socket screw of the intelligent battery sensor (IBS) (2).
Pull off the battery earth lead (3) including the intelligent battery sensor (IBS) (2) from the vehicle battery towards the top, put to one side and secure.
Equipment specification without the intelligent battery sensor (IBS):
Slacken nut (1).
Pull off the battery earth lead from the vehicle battery towards the top, put to one side and secure.
3 – Removing the front underbody protection
Loosen screws (1).
Pull the front underbody protection (2) in the direction of the arrow out from underneath the bumper panel (3).
MAIN WORK
4 – Removing starter motor
Prerequisite
Battery earth lead is disconnected.
Release connector (1).
Unfasten nut.
Remove positive battery cable (2).
Loosen screws (1).
Remove starter motor.
5 – Installing starter motor
Check starter pinion and ring gear for damage. Replace starter motor if necessary.
Tighten the screws (1), (2) and (3).
Starter motor
M8x60
Tighten screws in the following sequence (1), (2), (3).
19Nm
Attach the positive battery cable (2).
Tighten nut.
Wiring harness to starter motor
M6
8Nm
M8
13Nm
Connect connector (1).
Only during starter motor replacement or on vehicles with automatic engine start-stop function (MSA):
Reset start counter using BMW diagnosis system.
POSTPROCESSES
61 00 / 12 00 ... Notes on disconnecting and connecting the vehicle battery
61 12 ... Notes on the intelligent battery sensor (IBS)
Equipment specification with the intelligent battery sensor (IBS):
Position the battery terminal clamp including the intelligent battery sensor (IBS) (2) and battery earth lead (3) on the negative battery terminal.
Tighten the nut (1) of the battery terminal.
Battery earth lead to battery
M6
5Nm
Equipment specification without intelligent battery sensor (IBS):
Position the battery terminal including the battery earth lead on the negative battery terminal.
Tighten the nut (1) of the battery terminal.
Battery earth lead to battery
M6
5Nm
5
Starter motor
M8x60
Tighten screws in the following sequence (1), (2), (3).
19Nm
Used in step
5
Wiring harness to starter motor
M6
8Nm
M8
13Nm
Used in step
7
Battery earth lead to battery
M6
5Nm