OPERATING
INSTRUCTIONS
EMISSION
CONTROL
SYSTEM*
V.'-en
vehicle
is
used
normally
there is
nothing
special
to be noted - apart from
putting
lead-free petrol in the tank. In
certain
exceptional
circumstances
the
following
points
should
however
be ob-
served
for
safety
reasons:
•
Underbody sealant must not be ap-
plied
to the catalytic converter or the
exhaust pipes.
•
Due to the high temperatures
which can
occur
in the catalytic
con-
verter in very unfavourable conditions,
the vehicle should not be parked so
that
the catalytic converter can come
into contact
with
easily inflammable
materials.
To
ensure
that the
catalytic
converter
is
not
damaged
by
overheating,
the follow-
ing
points must
also
be
noted:
•
The vehicle must not be started
when catalytic converter is at operating
temperature by towing it a long
dis-
tance.
•
The ignition must not be
switched
off
as
long as vehicle is rolling
with
a gear
engaged.
•
If a defect
occurs
in the ignition
system
when driving (can be recogniz-
ed
by misfiring, uneven engine running,
loss
of
power)
the speed must be re-
duced
immediately. The defect should
be eliminated in the
next
V.A.G
work-
shop.
In
these
conditions,
unburnt petrol can
get
into the
catalytic
converter
and be
burned
there.
A
functional
description
of the
emission
control
system
is
given
on
page
117.
90