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Problem
Possible causes/consequences and
M
Solutions
5
The red oil pressure
indicator lamp is lit
while the engine is
running. A warning
tone also sounds.
The engine oil pressure is too low. There is a risk of engine dam-
age.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
X
Switch off the engine.
X
Secure the vehicle against rolling away (
Y
page 97).
X
Check the oil level (
Y
page 146).
X
If necessary, add engine oil (
Y
page 146).
Information on approved engine oils can also be obtained from any
qualified specialist workshop.
?
The red coolant tem-
perature warning lamp
comes on while the
engine is running. A
warning tone also
sounds.
The coolant temperature has exceeded 230
‡
(110
†
). The airflow to
the engine radiator may be blocked or the coolant level may be too
low.
G
WARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to catch
fire.
Steam from an overheated engine can cause serious burns, which
can occur just by opening the engine compartment cover.
There is a risk of injury.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
X
Switch off the engine.
X
Secure the vehicle against rolling away (
Y
page 97).
X
Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X
Check the coolant level and top up the coolant. Observe the notes
as you do so (
Y
page 203).
X
If you need to add coolant more often than usual, have the engine
coolant system checked.
X
Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X
Do not start the engine again until the coolant temperature is
below 230
‡
(110
†
). Otherwise, the engine could be damaged.
Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.
134
Warning and indicator lamps in the instrument cluster
>>
On-board
computer
and
displays
.