BMW 740iL Repair Manual download pdf (Page 15)

Level Control Systems

Single Axle EHC I System Components (E39/E53)

The EHC system consists of the following components:

• EHC Control Module

• Air Springs (2) with Air Reservoirs

• Rear Axle Level Sensors

• Encapsulated Air Supply (LVA)

• Warning Indicator

Control Module

The Control Module is mounted in the module carrier box in the luggage compartment on

the right side. It contains the processing electronics and final stages for operation of the

EHC system.

The control module receives the following inputs for its processing functions:

• KL 30 & 31 (Power/Ground)

• KL 15

• Left & Right Ride Height Sensors

• K Bus for;

- Vehicle speed

- Engine running

- Door/tailgate - open/closed

E39 Features 06

EHC Module (E39)

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BMW 740iL Repair Manual Page 15