5 Series E61 530d (M57T2) TOUR
37 90 ...
Troubleshooting on level control system
1. Height setting not OK
Fault
Cause
Remedy
Vehicle too low on one side or both
sides after being stationary but rises
to correct height when vehicle is
started
a)
Stationary for too long
b)
Large temperature drop while
vehicle stationary
c)
Pipes/screw connections
leaking
d)
Air supply unit defective
e)
Air springs defective
a)
No fault (system-related)
b)
No fault (system-related)
c)
Check pipes incl. screw
connections (first in easily
accessible area), then at air
spring with leak tester spray,
replace pipes if necessary
d)
Carry out diagnosis brief test
and work through stored faults
e)
Carry out diagnosis brief test
and work through stored faults
* Vehicle is too high at one side
(control not cutting in)
a)
Pipes mixed up
b)
Pipe/screw connections leaking
or clogged
c)
Air supply unit defective
d)
Ride-height sensor
mechanically defective (bracket,
control rod bent)
a)
Connect pipes correctly
b and c) Carry out diagnosis brief
test and work through stored
faults
d)
Check ride-height sensor,
bracket, control rod, replace if
necessary
* Both sides of vehicle always too
low.
If the vehicle has been driven in this
condition,
refer to 37 00 ... Notes on air springs.
a)
Vehicle is overloaded
b)
Fuse blown
c)
Control unit for air supply unit
defective
d)
Pipes/screw connections
leaking or defective
e)
Air supply unit defective
f)
Air springs defective
g)
Ride-height sensors
mechanically defective (bracket,
control rod bent)
a)
Partially unload vehicle
b)
Replace failsafe
c - g)
Carry out diagnosis brief
test and work through stored
faults
* Vehicle does not rise in response
to loads.
a)
Vehicle is overloaded
b)
Fuse blown
c)
Control unit for air supply unit
defective
RA Troubleshooting on level control system
BMW AG - TIS
18.02.2013 08:08
Issue status (12/2007) Valid only until next DVD is issued
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