5-13Instruments and controls
If it illuminates when the engine is
running; there may be a fault in the
engine electronics: interrupt your
journey and seek the assistance of a
workshop.
If regeneration of the diesel particle
filter is not successful or possible (3
5-13 “8 Diesel particle filter 3“), the
control indicator may illuminate and
the vehicle goes into limp home
mode: interrupt your journey and
seek the assistance of a workshop
immediately.
Further information 3 9-7.
Y Low fuel
If it illuminates during driving; fuel
level is low: fill up fuel tank as soon
as possible.
Never let the tank run dry!
Erratic fuel supply can cause catalytic
converter to overheat 3 9-8.
Diesel engines: The engine stops and
control indicator Z illuminates if the
fuel level is too low (3 5-11 “Z
Exhaust emissions”). If the tank has
been run dry, bleed the fuel system 3
10-7.Refuelling 3 9-12, fuel tank capacity
3 12-5.
8 Diesel particle filter 3
Will illuminate briefly in yellow when
the ignition is switched on.
If it illuminates during driving, the
diesel particle filter requires cleaning.
As soon as the road and traffic
situation permits it, increase speed to
more than 75 km/h (50 mph) for
approx. 30 minutes. The control
indicator extinguishes as soon as
cleaning is complete.
If regeneration of the diesel particle
filter is not successful or possible (3
5-12 “A Service vehicle soon 3“),
control indicator A may illuminate
and the vehicle goes into limp home
mode: interrupt your journey and
seek the assistance of a workshop
immediately.
Further information 3 9-7.
O Turn signal lamps
The appropriate control indicator will
flash in green when the turn signal is
on. Rapid flash; failure of a turn signal
bulb or the corresponding fuse.
Both control indicators flash when the
hazard warning lamps are active.
Turn signal lamps 3 6-2, bulb
replacement 3 10-7, fuses 3 10-11.
Warning chimes
While driving:
„when operating the turn signals.
„if driver’s seat belt is not engaged
and vehicle speed exceeds approx.
15 km/h (9 mph).
When the vehicle is parked and
driver’s door is opened:
„with exterior lamps switched on
(and ignition key removed).
„when the key is in the ignition
switch.
Seat belt warning chime 33-7.
Driving hints 3 9-1.
9-8Driving and operating
Catalytic converter
Controlling exhaust emission
The catalytic converter reduces to a
minimum the proportion of noxious
materials in the exhaust, such as
carbon monoxide (CO),
hydrocarbons (CH) and nitrogen
oxides (NO
x).
Leaded fuel will damage the catalytic
converter and parts of the electronic
system, thereby rendering them
inoperative. „If the engine misfires or runs
roughly after a cold start, the
engine power has reduced
significantly or other unusual
operating problems occur that
indicate a fault in the ignition
system, seek the assistance of a
workshop as quickly as possible.
Drive at a slower speed and with
less engine revs for a short time, if
necessary.
„If unburned fuel enters the catalytic
converter, this may result in
overheating and irreparable
damage to the catalytic converter.
You should therefore avoid
frequent cold starts, unnecessarily
long use of the starter when setting
off, running the tank dry (an
irregular fuel supply leads to
overheating) and starting the
engine by pushing or towing. „If the control indicator for exhaust
emissions Z illuminates whilst
driving, seek the assistance of a
workshop immediately. Control
indicatorZ for exhaust emissions
35-11.
Exhaust gases
Caution
Damage to the catalytic converter or
the vehicle may result if the following
points are not observed.
9 Danger
Engine exhaust gases contain
poisonous carbon monoxide,
which has no colour or odour and
can be lethal if inhaled.
If exhaust fumes penetrate the
vehicle interior, open the windows
and seek the assistance of a
workshop immediately.
