Table of Contents EMF Parking Brake Subject Page E89, F10, F12 and F25 Parking Brake . .5 Principles of Operation . .22 Function of the EMF Actuator . .23 Brake Piston . .24 Spindle and spindle nut in brake piston . .24 Applying the Parking Brake . .28 Rolling Monitor with Parking Brake Applied . .29 Temperature Monitoring . .29 Releasing the Parking Brake . .30 Dynamic Emergency Braking . .30 Parking Brake Fault . .31 Emergency Release . .31 Changing Brake Pads . .31 Brake Test Rig Recognition . .32 E70, E71, F01, F02, F04, and F07 Parking Brake . .35 Parking Brake Functions . .35 EMF Button . .37 E70 Emergency Release Location . .38 Using the EMF Emergency Release . .39 Restoring Operation After Emergency Release . .39 Electromechanical Actuating Unit . .40 EMF Actuating Unit Opened . .41 Force Sensor . .42 Service Functions . .43 Example Scenarios . .43 Transition from EMF Actuating Unit to DSC . .43 Transition from DSC to EMF Actuating Unit . .44 Function of the Parking Brake Controlled by the DSC Hydraulics . .44 Scenario: “Engine running” . .44 Scenario: “At rest” . .44 Dynamic Braking . .45 Exiting Dynamic Emergency Braking . .45 Error Messages . .46 General Parking Brake Fault Concept . .47 Fault Distribution Between DSC and EMF Control Unit . .47 Fault Regeneration . .47 Monitoring and Fault Detection . .48 Initial Print Date: 08/09 Revision Date: 10/11 Subject Page E65, E66 Parking Brake . .50 Purpose of The System . .50 Basic Function . .51 Automatic Hold . .51 Brake Pedal “Feel” . .51 Emergency Release . .51 Special Function . .51 System Components . .52 Electro-mechanical Actuating Unit (EMF) . .53 End Stop . .53 Gear Drive Mechanism with Coil Spring . .54 Workshop Hints . .55 Emergency Release . .55 Resuming Operation after Emergency Release . .56 Control Module . .56 Principle of Operation . .57 Parking Brake Control . .57 Push Button . .57 Indicator Lights . .57 Indication . .58 Automatic Hold Indication . .58 Additional Indication . .58 Parking Brake Functions . .60 Basic Parking Brake Function with the EMF . .60 Situation: “Ignition ON” and the engine is not running . .60 Changing from the EMF to DSC . .60 Changing from DSC to EMF . .60 Parking Brake Function with DSC (Service Brakes) . .60 Situation: “Engine running” . .60 Ignition Key Removed (Rest Status) . .60 Automatic Hold Function . .61 Automatic Hold Safety Control . .61 Situation: “Hood open” . .61 Situation: “The driver exits the vehicle” . .62 Dynamic Braking . .62 Exiting the dynamic emergency braking function . .63 Safety Concept . .63 Fault Messages . .63 General Parking Brake Fault Concept . .64 Fault Division Between DSC and EMF Control Module . .64 Shut Down Stage of "Manual Emergency Mode" . .64 Shut Down Stage "Only Dynamic Braking Available" . .64 Shut Down Stage "Total Shut Down" . .64 Fault Regeneration . .65 Subject Page Regeneration of CAN Faults . .65 Monitoring and Fault Detection . .65 EMF Self Diagnostics . .66 Workshop Hints . .67 Parking Brake Cable Removal . .67 Parking Brake Initialization . .67 Parking Brake Lining Seating . .67 Travel Monitoring . .68 Brake Testing on a Roller Dynamometer . .68 Assembly Mode . .68 Coding Data . .68 EMF Parking Brake Model: E89, E65, E66, and F0x vehicles Production: Start of production After completion of this module you will be able to: • Identify and understand the function and features of the different types of parking brakes BMW has to offer. • Diagnose and service the Electro Mechanical Parking Brake Systems. • Place the Electro Mechanical Parking Brake in the service mode. 4 EMF Parking Brake E89, F10, F12 and F25 Parking Brake For the first time at BMW, the E89 / F10 / F12 and F25 are equipped with an electromechanical parking brake integrated in the brake calliper. The use of the electromechanical parking brake offers the following advantages: • Operation by means of a button ergonomically positioned in the center console • Reliable application and release of the electromechanical parking brake (EMF) under all conditions • Dynamic emergency braking function also.