[BimmerMan33]

Just replaced rear brake pads on my 5er this weekend.
Post by Steve G and a few others was very helpful.

I would like to add:

Tools needed:
- 13 mm & 15 mm spanner for central floating caliper removal
- Torx/Hex key T30 for the 2 torx screws for removal of EMF actuator.
- Torx/Hex key T45 to turn the splines CLOCKWISE on the EMF actuator.
- Autozone has a disc brake caliper spreader tool for < $10, comes in handy when pushing back the piston, instead of using a C clamp. You still have to turn the EMF actuator spline clockwise until it stops.

Only the right inner pad has the pad wear sensor.
Inner & outer pads are not the same. Only the inner pad has the slot for the sensor.

Preferably lock the car with key fob/remote while changing pads, otherwise you may get "parking brake malfunction warning".

Once pads & sensor has been replaced, you can reset the service interval in the following way:
Sit in the car & close the door. Press Start/Stop once without pressing the brake, various instrument cluster warning lights light up normally.
Then, press & hold the trip meter reset button (left lower corner) for 5 seconds. May have to try more than once.
Various reset options appear on the small screen of the dashboard instrument panel including option to reset rear brake pads. Keep pressing the trip meter reset button briefly until rear brake pad reset option appears, then press trip meter reset button, it asks you to reconfirm, press & hold again, resetting.... appears. Rear brake pad service interval is reset to 47000 miles. This will also reset the red "BRAKE" light in the instrument cluster, provided it was on before the pads were replace and the pad sensor was also replaced.

Hope this helps!