Operation Manual

205Driving and operation
Catalytic converter for diesel engines
Damage to the catalytic converter or the
vehicle may result if the following points
are not observed:
z On uneven running, a clear drop-off in
engine power or other unusual operating
symptoms, contact a workshop as soon
as possible. Continue driving if necessary
for a short time at low speed and low
re vs .
Irregular engine running and a loss of
engine power when the Electronic
Stability Program (ESP®
Pl us
3) comes
into action are the result of operating
conditions and are therefore of no
significance - see page 208.
Picture no: 17004t.tif
Controlling exhaust emission
Some of the damaging substances in the
exhaust such as carbon monoxide (CO),
hydrocarbons (HC) and nitrous oxides
(N O
x
) are reduced to a minimum by
making structural changes – mainly in the
injection system and the ignition system in
conjunction with the catalytic converter.
Picture no: 17352t.tif
Control indicator Z for exhaust
Illuminates when the ignition is switched on
and during the start attempt. Goes off
shortly after the engine starts running.
Illuminated with the engine running
indicates a fault in the exhaust gas
cleaning system. The permitted emissions
may be exceeded. Contact a workshop
immediately.
Flashing with the engine running indicates
a fault which could lead to catalytic
converter damage. You may continue
driving without damage if you back off
until flashing stops and the control
indicator comes on. Contact a workshop
immediately.