5 Series E39 M5 (S62) SAL
37 90 ...
Troubleshooting on level control system
Faults marked with * can be limited with BMW Diagnosis System.
1. Height setting not O.K.
Fault
Cause
Remedy
Vehicle too low when stationary but
rises to correct height when vehicle
is started.
a)
Stationary for too long
b)
Large temperature drop while
vehicle stationary
c)
Line/air tank defective
d)
Air supply unit defective
e)
Both air springs defective
f)
One of lines (to air springs/air
reservoirs) on both sides
defective
a)
No fault (system-related)
b)
No fault (system-related)
c)
Check lines (in visible area), air
tank and screw connections
(first on distributor block and air
tank, then on pneumatic spring)
with leak tester spray (BMW
Parts Service) and replace if
necessary.
d)
Replacing air supply unit
e)
Replace air springs
f)
Replace lines
One side of vehicle too low when
stationary, but rises again after
vehicle starts.
a)
Line/air tank defective
b)
Air supply unit defective
c)
Air spring defective
d)
Line (to air spring/air reservoir)
defective
a)
Check lines (in visible area), air
tank and screw connections
(first on distributor block and air
tank, then on pneumatic spring)
with leak tester spray (BMW
Parts Service) and replace if
necessary.
b)
Replacing air supply unit
c)
Replace air spring
d)
Replace line
* One side of vehicle too high (does
not lower in response to control
unit).
a)
Height setting sensor
mechanically defective (bracket,
control rod bent)
b)
Lines interchanged
c)
A line is blocked
d)
Air supply unit defective
a)
If necessary, replace height
setting sensor, bracket and
control rod
b)
Connect lines of same color
c)
Unfasten line on distributor
block, check for escaping air
and replace if necessary
d)
Replacing air supply unit
* Both sides of vehicle always too
low.
If the vehicle was driven in this
condition,
RA Troubleshooting on level control system
BMW AG - TIS
22.02.2013 00:06
Issue status (12/2007) Valid only until next DVD is issued
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