4-4
Maintenance and Care
Electronic system
WARNING
Work on the electric equipment of
truck shall only be carried out in a
powerfree condition. Work on live
components for functional testing,
checks and adjustments shall only
be carried out by instructed and
authorized persons taking the
appropriate precautionary
measures. Before carrying out any
maintenance work on electrical
components, always disconnect
the battery and take off watches,
jewellery, rings or other metal
objects.
High-performance, modern controls
are equipped with capacitors.
Residual voltage can still be present
after the battery has been
disconnected.
For this reason, undertake the
following measures before servicing:
1. Switch off the ignition.
2. Disconnect the battery connector.
3. Switch ON the ignition and wait
until the display lights go out. Acti-
vate the horn for approximately 5
seconds.
4. Switch OFF the ignition.
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