BMW 7 Series: Overview Of 2-Axle Ride-Height Control

Fig. 3: Identifying 2-Axle Ride-Height Control System Components

1. Air suspension strut, front left and right
2. Ride height sensor, front left and right
3. Vertical Dynamics Management (VDM) control unit
4. Air suspension strut, real left and right
5. Relay, air supply unit
6. Electronic ride-height control (EHC) control unit
7. Pressure accumulator for air suspension
8. Air supply system with solenoid valve manifold
9. Ride height sensor, rear left and right
10. Air lines
11. Ride-height control switch

OVERVIEW OF DYNAMIC DRIVE (ARS)

Fig. 4: Identifying Dynamic Drive (ARS) System Components

1. Valve block
2. Control unit
3. Pipes
4. Active stabiliser bar, rear
5. Auxiliary steering pump
6. Level sensor (on fluid reservoir)
7. Active stabiliser bar, front
8. Pressure relief valves
9. Multi-chamber expansion hose

OVERVIEW OF DYNAMIC DRIVE (ARS) PRESSURE LINES, FRONT AXLE

Fig. 5: Identifying Dynamic Drive (ARS) Pressure Lines - Front Axle

ARS PRESSURE LINES REFERENCE CHART

1. Pressure line , valve block VA1
2. Pressure line , oscillating motor VA1
3. Pressure line , oscillating motor VA2
4. Valve block Pressure line , (short, rear-wheel drive only)

OVERVIEW OF DYNAMIC DRIVE (ARS) PRESSURE LINES, REAR AXLE

Fig. 6: Identifying Dynamic Drive (ARS) Pressure Lines - Rear Axle

1. Pressure lines , oscillating motor HA1/HA2
2. Pressure lines , underfloor HA1/HA2

OVERVIEW OF VERTICAL DYNAMICS MANAGEMENT (VDM)

Fig. 7: Identifying Vertical Dynamics Management (VDM)System Components

1. Spring strut, front
2. Ride-height sensor, front
3. Operating unit (next to gear selector switch)
4. Ride-height sensor, rear
5. Spring strut, rear
6. Control unit

OVERVIEW OF LINES, STEERING WITH ARS

Fig. 8: Overview Of Lines, Steering With ARS

1. Return line
2. Suction line
3. ARS expansion hose part 3
4. ARS return line
5. ARS expansion hose part 2
6. ARS+AFS return
7. ARS expansion hose part 4
8. Expansion hose part 2
9. Expansion hose part 1
10. ARS expansion hose part 1

OVERVIEW OF RIDE-HEIGHT CONTROL SYSTEM

Fig. 9: Identifying Ride-Height Control System Components

1. Ride-height sensors, rear
2. Air spring strut
3. Ventilation line
4. Air supply unit
5. Control unit
6. Air line

Performing Vertical Acceleration Sensor Adjustment (Vertical Dynamics Management)

NOTE: Vertical acceleration sensor adjustment must be performed after replacement of the spring strut/shock absorber with damper satellites.

Connect vehicle to BMW diagnosis system.

Select and perform vertical acceleration sensor adjustment under Service functions.

Risk Of Injury If Oil Comes Into Contact With Eyes And Skin

Danger of injury!

Contact with eyes or skin may result in injury!

Possible symptoms are:

• Impaired sight
• Irritation of the eyes
• Reddening of the skin
• Rough and cracked skin

Protective measures/rules of conduct

• Wear safety goggles
• Wear oil-resistant protective gloves
• Observe country-specific safety regulations

First aid measures

• Eye contact: Rinse eyes immediately with plenty of water for at least 15 minutes; if available, use an eye-rinsing bottle. If irritation of the eyes persists, consult a doctor.
• Skin contact: Wash off with soap and water immediately. If irritation persists, consult a doctor.

NOTE: Do not use solvents/thinners.

READ NEXT: