Malfunctions in driving mode
8.4 Troubleshooting
Operating manual 3 302 709 en 8 - 23
GMK5150L
12.01.2018
8.4.5 Malfunctions in the transmission
H
Further information; Ã Warning messages on the CCS display, p. 8 - 13.
Malfunction Cause Solution
Transmission only shifts up
to 2nd gear – the symbol is
displayed
Transmission oil too hot Switch to the neutral posi-
tion and wait until the
transmission oil has
cooled down
Transmission oil colder
than about -7 °C (20 °F)
Wait until transmission oil
temperature rises
Transmission is not
upshifting at speeds over
about 20 km/h (12 mph)
A locking procedure is not
yet completed
Switch off differential
locks;
à p. 5 - 52
Transmission not shifting –
the symbol is displayed
Retarder switched on
à Switching off the
additional brakes
, p. 5 - 43
The transmission does not
respond to the controls
Fuse F1/6 blown Replace blown fuses;
à p. 8 - 49
Transmission cannot shift
down as otherwise the
maximum permissible
engine speed would be
exceeded.
Braking the truck crane
Driving display indicates a
malfunction
The electronic gear system
has detected a malfunction
à Procedure during trans-
mission malfunctions
,
p. 8 - 4
Transmission diagnostics
plug not working
Fuse F1/2, F6/5 blown Replace blown fuses;
à p. 8 - 49
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