Changing A Wheel; Tracing Faults - VB -FullAir 2C User Manual

"The constant ride-height of the vehicle reduces tyre wear and lowers fuel consumption."

Changing a wheel

Risk of damage!
Before raising one or more axles with a jack or hydraulic ramp, switch off the air
suspension system using the SERVICE button.
The VB-Airsuspension system must not be used to lift wheels from the ground during servicing
work.
Always use a jack or hydraulic ramp to change a wheel or carry out other servicing work.
Remove the 7.5 A fuse and replace it afterwards.
Emergency inflation
In the engine compartment there are two inflation valves on a mounting plate. These are used to top
up the system in case of emergency. If the air suspension system fails, the air spring can be pumped
up manually.
Working on the system can be dangerous!
• Before carrying out emergency inflation, remove the fuses from the fuse box.
• Never inflate the air springs to a pressure of more than 8 bar.
• Consult your conversion station if necessary.
a
c
The valves are arranged so that they can easily be matched to the correct side. The valves
are also marked.
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Rear right Front right
a c
b
(black) (red)
Rear left Front left
b d
d
(green) (blue)
Troubleshooting
Functional faults can be diagnosed using the table below. If you cannot correct the fault, contact
your nearest trained VB-Airsuspension partner.
In case of air loss, immediately contact an authorised specialist workshop and drive extra
carefully at a much lower speed (max ± 30 km/h.).
Information about trained partners and the spare parts you might need can be obtained from
VB-Airsuspension Aftersales. They will be pleased to help.

Tracing faults

Fault Possible cause
Load was moved after the air
Vehicle is tilted
suspension was switched off
Ignition switched off
The remote control does not
7.5 A fuse faulty
respond
Battery voltage too low
Ignition switched off
Compressor not working
40 A fuse faulty
Battery voltage too low
Compressor relay faulty
Compressor does not switch off
Air loss
Driving too fast
Air suspension does not lower
7.5 A fuse faulty
Vehicle too heavily loaded
Air suspension does not raise Driving too fast
7.5 A fuse faulty
In case of faults that are not mentioned in this table or that you cannot rectify yourself,
contact a trained VB-Airsuspension partner.
Remedy
Switch on the air suspension,
lower the vehicle and reset the
vehicle height
Switch on ignition
Replace the 7.5 A fuse
Charge the battery
Switch on ignition
Replace the 40 A fuse
Charge the battery
Remove 40 A relay
Consult workshop
Stick to speed limit
Replace the 7.5 A fuse
Reduce load
Stick to speed limit
Replace the 7.5 A fuse
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