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Faults
High oil consumption
Headlight and position light are
not functioning
Turn signal, brake light, and
horn are not functional
Time is not (correctly) dis-
played
12 V battery discharged
The combination instrument
shows nothing on the display
Speedometer in combination
instrument not functioning
Possible cause
Engine oil too thin (low viscos-
ity)
Fuse 6 blown
Fuse 6 blown
Fuse 7 is blown
Ignition was not switched off
when vehicle was parked
The 12-V battery is not being
charged by the alternator
Fuse 7 is blown
Speedometer wiring harness is
damaged or plug-in connector
is oxidized
TROUBLESHOOTING 22
Action
–
Change the engine oil and oil filter,
clean the oil screens.
(
–
Change the fuses of individual power
consumers. (
p. 184)
–
Change the fuses of individual power
consumers. (
p. 184)
–
Change the fuses of individual power
consumers. (
p. 184)
–
Set the clock. (
p. 75)
–
Charge the 12-V battery.
–
Check the charging voltage.
–
Check the open-circuit current.
–
Change the fuses of individual power
consumers. (
p. 184)
–
Set the clock. (
p. 75)
–
Check the wiring harness and plug-in
connector.
p. 219)
(
p. 178)
235
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