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266 Display messages and warning and indicator lamps
Warning/indicator
lamp
6
Fuel reserve warning
lamp
?
Coolant warning lamp
?
Coolant warning lamp
Possible causes/consequences and
Ignition system (in vehicles with a gasoline engine)
R
Fuel system
R
This can cause the emissions limit values to be exceeded and the
engine to run in emergency mode.
Have the vehicle checked immediately at a qualified specialist
#
workshop.
*The yellow fuel reserve warning lamp is on while the engine is run‐
ning.
The fuel supply has dropped into the reserve range.
Refuel the vehicle.
#
*
In vehicles without steering-wheel buttons, the coolant temperature
display is at the start of the bar display (
In vehicles with steering-wheel buttons, the coolant temperature dis‐
play on the instrument cluster is at the start of the scale.
The temperature sensor for the coolant temperature display is defec‐
tive.
The coolant temperature is no longer being monitored. If the coolant
is too hot, the engine may be damaged.
Stop immediately in accordance with the traffic conditions and
#
switch off the engine. Do not continue driving.
Secure the vehicle against rolling away.
#
Consult a qualified specialist workshop.
#
*The red coolant warning lamp is on while the engine is running.
The coolant level is too low.
If the coolant level is correct, the air supply to the radiator may be
impaired or the radiator's electric fan may be faulty.
The coolant is too hot and the engine is not being adequately cooled.
Pay attention to the display messages.
#
Stop immediately in accordance with the traffic conditions and
#
switch off the engine.
Secure the vehicle against rolling away.
#
Exit the vehicle and keep a safe distance from it until the engine
#
has cooled down.
Check the coolant level and add coolant, complying with the
#
instructions (
page 180).
/
If the coolant has to be topped up frequently, have the engine
#
cooling system checked at a qualified specialist workshop.
Ensure that the air supply to the radiator is not impaired, e.g. by a
#
plastic bag that has been blown onto the grille.
Check the coolant temperature:
#
M M
Solutions
page 142).
/
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