Functional Description - Restraints, Stability Control, Tire & Wheel, Towing, Transmission & Driveline Systems

• Restraints System - Functional Description
  • Crash safety module
    • Notes
    • Brief description of components
      • Notes
      • ACSM control unit
      • Airbag control lamp
      • Seat belt warning lamp
      • Indicator lamp for passenger airbag deactivation
      • Fuel pump
      • Seating position sensor (only E88)
    • Notes for service technicians
      • General Information
    • Diagnosis instructions
    • Notes on coding/programming
  • Crash-active head restraint
    • Notes
    • Brief component description
      • Notes
      • Crash-active head restraint
      • ACSM or MRS: Crash safety module/multiple restraint system
      • Airbag control lamp
    • System functions
      • Notes
      • Self-test
      • Impact detection
      • Activating the safety system
      • Data storage on activation of the safety system
    • Notes for service technicians
      • General note
  • Ignition circuit, safety system (airbag)
    • Notes
    • Principle procedure for checking an ignition circuit
      • Notes
      • Warnings
  • Passenger's airbag deactivation
    • Notes
    • Indicator lamp for passenger airbag deactivation
    • Switch for passenger's airbag deactivation (EU version)
  • Seat belts
    • Notes
    • Belt buckle switch
  • Seat occupation detection (OC3)
    • Notes
    • Seat occupancy detection
  • Seat occupancy electronics - installation position
  • Lock for second row of seats
    • Notes
    • Brief component description
      • Notes
      • E70, E71: Microswitches (5 pieces)
      • F15, F16: Microswitches (4 pieces)
      • Instrument panel (KOMBI)
      • E70, E71: Junction box electronics (JBE)
      • F15, F16: Body Domain Controller (BDC)
    • System functions
      • Notes
      • Monitoring of the large seat half
      • Monitoring of the small seat half
      • Check Control message
• Stability Control System - Functional Description
  • Adaptive Drive
    • Vertical dynamics management
    • Brief description of components
      • Notes
      • VDM: vertical dynamics management
      • Damper satellites
      • Height sensors
      • Sport button
      • ARS: active roll stabilization
      • DSC: Dynamic Stability Control
      • SZL: Steering column switch center
      • DME or DDE: Digital Engine Electronics/or Digital Diesel Electronics
      • JBE: Junction Box Electronics
    • System function
      • Notes
      • Damping of the wheel movements as well as body movements
      • Fail safe
    • Notes for service technicians
      • General information
      • Diagnosis instructions
      • Notes on encoding/programming
      • Switch-on conditions
  • Dynamic Drive
    • Notes
    • Brief description of components
      • Notes
      • Control module
      • Valve block
      • Lateral-acceleration sensor
      • Pressure sensors for the front and rear-axle anti-roll bars
      • Switch position sensor
      • Pressure control valves
      • Directional control valve
      • Safety valve
      • Non-return valves
      • Active anti-roll bars
      • Tandem pump
      • Oil reservoir and oil-level switch
      • Oil cooler
    • System functions
      • Notes
      • Complete system
    • Notes for service technicians
    • General information
    • Diagnosis instructions
    • Notes on encoding/programming
    • Information on Check Control messages
  • Dynamic Stability Control (DSC)
    • Notes
    • Diagnosis instructions
      • Overview
      • Remedying faults and/or deleting the fault memory
      • Sequence for replacement of DSC unit or DSC control unit
      • Replacement of DSC sensor
      • Replacement of steering angle sensor
    • Introduction
      • Dynamic Stability Control
    • Brief component description
      • Notes
      • DSC unit
      • 4 wheel speed sensors
      • DSC sensor
      • Steering angle sensor
      • DTC button and HDC button
      • Brake fluid level switch
      • Brake light switch
      • 2 brake pad wear sensors
      • KOMBI: Instrument panel
      • CAS: Car Access System
      • JBE: Junction Box Electronics
    • System functions
      • Notes
      • DTC: Dynamic Traction Control
      • Brake standby through application at an early stage of the brake pads when required
      • Dry braking of the brake discs on wet roadways
      • Fading Brake Support
      • Drive-off assistant
      • Cruise control with brake function
      • EMF: electromechanical and hydraulic parking brake
      • ABS: Antilock braking system
      • EBV: Electronic brake force distribution
      • CBC: Cornering Brake Control
      • MSR: Engine drag torque control
      • ASC: Automatic Stability Control
      • DSC: Dynamic Stability Control
      • DBC: Dynamic Brake Control
      • All-wheel control
      • HDC: Hill Descent Control
      • Trailer Stability Control
      • RPA: Run Flat Indicator
      • CBS: Condition Based Service
    • Notes for service technicians
      • General notes
    • Notes on encoding/programming
    • Switch-on conditions
  • DSC control unit - troubleshooting interface faults
    • Notes
    • Interface fault in control unit
    • Measures
    • Notes on the DSC control unit
    • Clear fault memory note in DSC control unit
  • DSC/ASC - troubleshooting in the case of overvoltage
    • Notes
    • Procedure
• Tire & Wheel System - Functional Description
  • General information on the topic of tire wear, wear patterns and inconsistent steering wheel position
    • Notes
    • Information on runflat and wide tires
      • Notes
      • Tire wear
    • Notes on tire damage
    • Tire damage patterns
    • Steering wheel inclination
    • Notes on reading the DOT number
  • Tire Pressure Control (RDC)
    • Tire Pressure Monitor
    • Brief component description
      • Notes
      • RDC aerial
      • RDC transmitters
      • Wheel electronics systems in the road wheels and in the spare wheel
      • RDC control unit
    • System functions
      • Notes
      • Overall function
      • RDC reset
    • Notes for service technicians
      • Diagnosis instructions
    • National-market versions
      • Europe, USA, Canada
  • Tire Pressure Monitor (RDC)
    • Notes
    • Assignment of wheels
    • RDC control unit
    • Structure and inner electrical connection
    • Diagnosis instructions for RDC control unit
      • Notes
      • Wheel electronics
    • Diagnosis instructions for the wheel electronics
    • Diagnosis instructions for service
    • National-market versions
      • USA, Canada, Europe
• Towing - Functional Description
  • Trailer module (AHM) and trailer coupling release
    • Notes
    • Brief component description
    • System functions
      • Notes
      • Trailer lighting
      • Trailer detection
      • Electrical folding trailer tow hitch
      • Fully automatic trailer tow hitch E6x
      • Fully automatic trailer tow hitchE70
    • Notes for service technicians
      • Diagnosis instructions for the trailer module
      • Notes on encoding/programming
  • Trailer module: Currently known fault patterns
    • Notes
    • Currently known fault patterns of the trailer module AHM3
    • Known fault patterns for the electrical swing-out trailer coupling
    • Known fault patterns for the electrical release trailer coupling
  • AHM_70 - description of short circuit behavior
    • Short circuits in the trailer module AHM_70
• Transmission & Driveline System - Functional Description
  • 8-speed automatic gearbox 8HP
    • Notes
    • Brief component description
      • Notes
      • Electronic transmission control (EGS)
      • Gear sets
      • Shift elements
      • Torque converter
      • Oil pump
      • Parking lock
      • Emergency release
      • System overview
    • System functions
      • Notes
      • Generating gears
      • Standstill decoupling
      • Overlap control
      • Driver type adaptation
        • Notes
        • Fast depressing of the accelerator pedal
        • Rapid retraction of the accelerator pedal
        • Corner assessment
        • Brake evaluation
        • Assessment when driving at a constant speed
      • {LOW} mode (Rolls-Royce only)
      • Driving situation evaluation
        • Winter program
        • Hill and trailer function
        • Corner function
        • Braking downshift function
        • Control function for speed
        • Required gear determination
        • Characteristics curve of shift speeds
    • Notes for service technicians
      • Automatic transmission fluid
  • EWS reset - 6HP19TU/26TU/32TU automatic transmissions (6-speed)
    • Notes
    • Diagnosis instruction
  • All-wheel drive system xDrive with transfer box
    • All-wheel drive system xDrive with transfer box (VTG)
    • Brief component description
      • Notes
      • Drive train
      • Transfer box
      • Mechanical design transfer box
      • Center console operating facility
    • System functions
    • Note for service technicians
  • Gearbox leakage
    • Noticeable symptoms
  • Gear selector switch
    • Notes
    • Brief description of components
      • GWS: Gear selector switch
      • Selector lever
    • System functions
      • Notes
      • Engaging a drive position
      • Recording the selector-lever position
      • Function indication
      • Automatic return
    • Notes for service technicians
      • General information
        • Emergency release of the parking lock
      • Special situations (functions in the EGS)
        • Memory function for driving direction change
        • Memory function, parking lock
        • Holding time of position "N"
  • Gear selector switch not functioning
    • Perception
  • Interlock locking pawl
  • Mechatronic solenoid valves (MV), electronic pressure control valves (EDS)
    • Notes
    • Brief description of components (solenoid valves)
    • Brief description of components (electronic pressure actuators)
    • Diagnosis instruction
    • Brief component description (solenoid valves)
    • Brief component description (electronic pressure actuators)
    • Mechatronic calibration following repairs
  • Mechatronic speed sensors for turbine and output
    • Fault recognition
  • Mechatronics of the automatic transmission
    • Notes
    • Electronics module
      • Notes
      • EGS control unit
      • Hydraulic unit
  • Transmission does not shift to P
    • Perception
    • Assessment