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Changed rear brake pads on my 2010 F10 520d yesterday. You don't need a computer to do it. See metod below, hope it helps.
F10 BMW 520d 2010 Onwards Rear Brake Pads Replacement Procedure
No computer system is required.
Make sure front wheels are blocked front and rear. With car jacked up and rear wheel removed, start the engine and release the handbrake button which will release the handbrake at the rear callipers. Turn off the engine. The handbrake will remain off.
Off Side Rear Brake Pads Replacement
Remove EMF brake actuator electrical cable by unplugging, release cable from bracket and unclip further back to move cable away from the work area.
Detached EMF hand brake actuator by unscrewing 2 small torx bolts (star key bolts, not Allen key bolts); one of these bolts will hold the cable bracket, remove actuator from calliper. Rest actuator on suspension wishbone as it still has cables attached.
Remove floating central section of calliper that contains the piston, by removing 2 x 13mm bolts that are bolted through to the 2 small rubber gators. Take care not to damage the pad wear sensor on the off side rear wheel. Rest this section on a tall item (wooden block or something similar) to avoid putting undue pressure on the brake hose.
Remove brake pads sideways. On off side inner pad carefully release pad wear sensor with screwdriver (it just pops out). Remove metal shims and replace with new or if no new ones available clean up existing shims with wire brush and replace. Attach pad wear sensor to new inside pad and install into place, install outer pad.
On central calliper at the rear of the piston where the actuator spline fits, turn spline clockwise with small tool until it comes to a stop (tried turning anticlockwise as advised by someone but ended up pushing piston out even further). Then use a pressure clamp and gently squeeze piston back into calliper body. Slide central calliper into position back over pads. Replace 2 x 13mm bolts and tighten.
Offer up EMF hand brake actuator and align spline, when located correctly, actuator will be flush to rear of calliper. Replace cable bracket, replace and tighten 2 x torx bolts (star key bolts). Re-plug actuator cable to actuator. Replace actuator cable and pad wear cables into bracket. Re-clip cable further back. Replace wheel and lower to ground.
Near Side Rear Brake Pads Replacement
Repeat procedure for near side brake pads replacement. Note that there is no pad wear sensor on this side, therefore when the EMF handbrake actuator is unbolted it can be removed and laid on the ground. Continue to follow the above procedure.
Handbrake and footbrake operation
When pad replacement is complete and car is on ground, press footbrake pedal a few times. With foot on footbrake, start car and activate handbrake button a few times which will set EMF brake into working order. With handbrake released you will find the brake auto hold also works correctly.
Job is complete. Now for a test drive.
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