BMW 5 Series Owners & Service Manuals

BMW 5 Series: Electric Active Roll Stabilization (EARS)

Driving Stability Control
System overview of electric active stabilization in the G30

  1. Electric active roll stabilization front (EARSV)
  2. Front right vertical acceleration sensor
  3. Auxiliary battery in the engine compartment
  4. Rear right vertical acceleration sensor
  5. Vertical Dynamics Platform (VDP)
  6. Rear right power distribution box
  7. Power Control Unit (PCU)
  8. Electric active roll stabilization rear (EARSH)
  9. Rear left vertical acceleration sensor
  10. Front right vertical acceleration sensor

The electrical active stabilizers (EARS) had their series introduction in the G12. The stabilizers are available to the customer only as optional equipment in conjunction with further suspension control systems (see Highlights chapter). The system has been adopted in full in the G30 with the exception of the preview function.

The preview function, which was implemented on the G12 using the stereo camera, is not used on the G30. For this reason, the name of the optional equipment has been changed from "Executive Drive Pro" on the G12 to "Adaptive Drive" or " Dynamic Handling Package" on the G30.

System wiring diagram for the voltage supply

Driving Stability Control
EARS system wiring diagram in the G30

  1. Digital Motor Electronics (DME)
  2. Starter motor
  3. Electric active roll stabilization at the front (EARSV)
  4. Alternator
  5. Power distribution box, engine compartment
  6. Jump start terminal point
  7. Auxiliary battery in the engine compartment
  8. Power distribution box, auxiliary battery, engine compartment
  9. Power distribution box, front right
  10. Body Domain Controller (BDC)
  11. Fuse in the Body Domain Controller
  12. CAN terminator
  13. Power distribution box, rear
  14. Fuse in the power distribution box
  15. Power Control Unit (PCU)
  16. Electric active roll stabilization at the rear (EARSH)
  17. Battery power distribution box
  18. Safety battery terminal
  19. Battery
  20. Power distribution box, front left (PHEV version only)

Current flow

The graphic below shows the control characteristics depending on the road surface or the route.

Driving Stability Control
Current flow on the power supply line to the electrical active stabilizer in the G30

  1. Rough road condition
  2. Avoidance maneuver
  3. Traffic circle
  4. Smooth road condition


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