BMW 7 Series: Removing And Installing Electric Steering Box (EPS)
IMPORTANT: Steering box: Check connection of steering box for corrosion, clean contacts if necessary.
The steering box must be replaced if the corrosion is too far advanced.
Connecting line: In the event of moisture/corrosion inside the two plug connections, check the insulation of the connecting line. If the insulation reveals any noticeable/striking features, partial replacement will be necessary. Otherwise it will be sufficient to replace the contacts or connector housing.
NOTE: In a warranty case you must always provide a fault memory printout, even where there is no fault entry, with the defective part.
Necessary preliminary work:
- Disconnect BATTERY EARTH LEAD
NOTE: High-current-carrying wiring laid with permanent positive connection (80 A fuse).
- Remove underbody protection at FRONT and REAR
- Remove COVER FOR STEERING ASSEMBLIES on left and right
- Remove stiffening plate
- Remove TRACK ROD END on both sides from swivel bearing
- Remove LOWER SECTION of steering shaft from steering box
- Version with Dynamic Drive:
- Remove ANTI-ROLL BAR LINK ON RIGHT OF ANTI-ROLL BAR
IMPORTANT: To avoid the need for axle/wheel alignment, mark position of steering box (1) to front axle support (2).
To do so, draw a wide white stripe on the front bolting points (left and right) and apply a thin black marking (3) to this stripe.
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Fig. 45: Marking Position Of Steering Box To Front Axle Support
Release screws (1) and tie anti-roll bar (2) to front axle support.
Tightening torque 31 35 1AZ.
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Fig. 46: Identifying Anti-Roll Bar Link With Screws
Unlock plug connection (1) and disconnect.
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Fig. 47: Identifying Connectors
Release screws (1).
Lay holder (2) with wiring to one side.
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Fig. 48: Identifying Holder And Screws
Undo screws (1) and remove steering box from below.
Tightening torque 32 00 1AZ Installation note: When installing, make sure that the steering box is realigned to the marking applied to the front axle support prior to removal.
Replace screws.
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Fig. 49: Identifying Steering Box Screws
IMPORTANT: Risk of damage! Plug connection (1) on electrical steering box must not be damaged when removing.
Remove steering box with wiring harness downward.
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Fig. 50: Identifying Connector
After installation:
- Teach in END STOP SOFTWARE
READ NEXT:
Removing And Installing Hydraulic Steering Gear
WARNING: DANGER OF POISONING if oil is ingested/absorbed through the
skin!
RISK OF INJURY if oil comes into contact with eyes and skin!
IMPORTANT: Adhere to the utmost cleanliness. Do not allow any d
Replace Electrical Steering Box (EPS)
IMPORTANT: Steering box:
Check connection of steering box for corrosion, clean contacts if
necessary.
The steering box must be replaced if the corrosion is too far advanced.
Connecting line:
In the
Removing And Installing Electrical Steering Box Active Steering
IMPORTANT: Steering box:
Check connection of steering box for corrosion, clean contacts if necessary.
The steering box must be replaced if the corrosion is too far advanced.
Connecting line:
In the
SEE MORE:
In-Line Plugs, 24-Pin, Hybrid System MQS/MPQ
Notes
Manufactured by AMP: The following contact types without strand
sealing can be fitted in the connector
housings:
MQS (Micro Quadlock System)
MPQ, width 2.8 mm (Micro Power Quadlock)
MPQ, width 5.2 mm (Micro Power Quadlock)
Socket housing:
Press locks (1) on protective cap (2) upwards on
General information
Electronic control devices are installed in the vehicle.
Electronic control units process data they
receive from vehicle sensors, self-generate or
exchange with each other. Some control units
are necessary for the vehicle to function safely or
provide assistance during driving, for instance
driver
