5-58 Switches and controls
2 BlueTec
®
exhaust gas aftertreatment
2.1 Warnings for BlueTec
®
exhaust gas after-
treatment
Five different combinations (patterns) of warning
lamp/indicator lamp operation and buzzer sound
warn you of the different abnormal conditions with
the BlueTec
®
exhaust gas aftertreatment as shown
below.
Warning
pattern
Buzzer Warning/indicator lamp
Problem
condition
Ref.
page
1
No
sound
Quantity of DEF in
DEF tank has fallen
too low.
Engine power is
reduced in stages.
5-59
2 Sounds
Quantity of DEF in
DEF tank has fallen
further.
Engine power is fur-
ther reduced in
stages.
5-60
3
Loudly
sounds
DEF tank has
become empty.
A driving restriction
automatically
engages, locking
the gear in 1st or
reverse, so the
vehicle can be
driven only slowly.
5-60
4
No
sound *5
DEF quality is
degraded.
Engine power is
reduced in stages.
*3
5-60
5
No
sound *6
BlueTec
®
exhaust
gas aftertreatment
is faulty.
Engine power is
reduced in stages.
*4
5-62
Z21727
,
(Amber)
Z21728
,
,
(Red)
Z21729
,
,
(Red)
Z21757
*1,
,
(Amber)
*7
*2
,
(Amber)
*7
FE_FG.book Page 58 Tuesday, February 8, 2011 4:00 PM