MTU 4R 1000 SERIES, Operating Instructions Manual

Page: 45 / 88

Problem
Possible causes/consequences and
M
Solutions
The
·
indicator
lamp lights up.
An emissions-relevant malfunction in the exhaust gas aftertreat-
ment system or in the AdBlue
®
supply has been detected.
X
Have the exhaust gas aftertreatment system checked at a quali-
fied specialist workshop. Have the malfunction rectified imme-
diately. If you do not, engine output may be reduced and engine
speed may be limited.
If there are no malfunctions, the indicator lamp only goes out after
further test routines. The system check may involve several engine
starts, several hours or several journeys without a malfunction.
The indicator lamp
lights up and
·
is
flashing.
You have not rectified an emissions-relevant malfunction that has
been detected in the exhaust gas aftertreatment system or in the
AdBlue
® /DEF supply.
Reduced engine output is active. The engine torque is limited to a
maximum of 75% across the whole engine speed range. The limi-
tation takes effect by means of a ramp function.
X
Adapt your driving/operating style.
X
Drive carefully to the nearest qualified specialist workshop and
have the malfunction rectified immediately.
If you do not follow the instructions, an engine speed limitation
may be imposed.
The and
·
indi-
cator lamps are flash-
ing.
You have not rectified an emissions-relevant malfunction that has
been detected in the exhaust gas aftertreatment system or in the
AdBlue
®
/DEF supply.
The reduction in engine output and limitation of the engine torque
are activated. The engine torque is limited to a maximum of 50%
across the whole engine speed range. The engine speed is limited
to a maximum of 60%. The limitation takes effect by means of a
ramp function.
X
Adapt your driving/operating style.
X
Drive carefully to the nearest qualified specialist workshop and
have the malfunction rectified immediately.
If you do not follow the instructions, an engine speed limitation
may be imposed.
Warning and indicator lamps
43
Operation
Z