5 Series E60 520d (N47) SAL
8.
The lines have not been run correctly or a line is kinked. Adjust the run of the line(s).
9.
The system is leaking, sucking in air, making sucking noises and the fluid is foaming in the reservoir. Locate the
leak and repair, fill and bleed the system.
(See Repair Instructions 32 13 006).
10. There is dirt in the steering system. Flush out the steering system:
-
Replace the reservoir and fill it with fluid.
-
Leave the engine running at idle speed for approx. 5 min. and flush the steering system while it is in the
straight-ahead position.
-
In vehicles equipped with Servotronic, then disconnect the converter and, with the engine running and the
vehicle standing on its wheels, turn the steering wheel from the straight-ahead position through 180
°
a total
of 10 times. (The steering resistance caused by the vehicle standing on its wheels is necessary in order to
build up pressure in the ZHL).
11. The delivery pressure of the hyraulic pump is too low or is irregular. Check the nominal pressure of the pump
and replace the pump if necessary.
(See Technical Data/Repair Instructions 32 41 009).
12. If points 1 - 11 are OK: the fault may be in the steering box. Replace the steering box.
Complaint:
Steering force fluctuations (steering-force assistance fluctuating) while driving (ZHL)
1.
In vehicles equipped with power-assisted rack and pinion steering and Servotronic, check the
converter/Servotronic using the DIS diagnosis program.
2.
Check the drivebelt for residues of coolant and oil and replace if necessary.
Important!
Always replace the drivebelt if it is soiled with hydraulic fluid.
(See Repair Instructions 11 28 010).
3.
Check the fluid level in the reservoir. A definite loss of oil indicates there may be a leak or leaks in the steering
system. Check the steering system for leaks and repair, fill and bleed the system if necessary.
(See Repair Instructions 32 13 006).
4.
Check whether the following components are damaged, stiff, corroded, worn, have play, are worn out: ball joints,
McPherson strut mounts, steering shaft bearings, universal joints of the steering shaft, track rod joints, flexible
wheel suspension joints, control arm bearings, tension rod bearings/rubber bushings, anti-roll bar bearings,
pendulum supports, ball joints on the rack, rubber covers and gaiters. If necessary, replace components.
5.
The delivery pressure of the hyraulic pump is too low or is irregular. Check the nominal pressure of the pump
and replace the pump if necessary.
(See Technical Data/Repair Instructions 32 41 009).
6.
There is dirt in the steering system. Flush out the steering system:
-
Replace the reservoir and fill it with fluid.
-
Leave the engine running at idle speed for approx. 5 min. and flush the steering system while it is in the
straight-ahead position.
-
In vehicles equipped with Servotronic, then disconnect the converter and, with the engine running and the
vehicle standing on its wheels, turn the steering wheel from the straight-ahead position through 180
°
a total
of 10 times. (The steering resistance caused by the vehicle standing on its wheels is necessary in order to
build up pressure in the ZHL).
7.
If points 1 - 6 are OK: the fault may be in the steering box. Replace the steering box.
Complaint:
Rotary oscillation of steering wheel while driving (ZHL)
SI Aid to Diagnosing the Steering System
BMW AG - TIS
23.01.2013 15:37
Issue status (12/2007) Valid only until next DVD is issued
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