Mercedes-Benz GLA Operator's Manual page 262

Warning and indicator lamps in the instrument cluster
260
Engine
Problem
;
The yellow Check
Engine warning lamp
lights up while the
engine is running.
æ
The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning.
æ
The yellow reserve fuel
warning lamp flashes
while the engine is run-
ning.
?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gauge is at the
start of the scale.
Possible causes/consequences and M M Solutions
There may be a malfunction, for example:
in the engine management
R
in the fuel injection system
R
in the exhaust system
R
in the ignition system
R
in the fuel system
R
The emission limit values may be exceeded and the engine may be
in emergency mode.
Have the vehicle checked as soon as possible at a qualified
X
specialist workshop.
i In some states, you must immediately visit a qualified special-
ist workshop as soon as the yellow Check Engine warning lamp
lights up. This depends on the locally applicable legal require-
ments. If in doubt, check whether such legal regulations apply in
the state in which you are currently driving.
The fuel level has dropped into the reserve range.
Refuel at the nearest gas station.
X
The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
Check that the fuel filler cap is correctly closed.
X
If the fuel filler cap is not correctly closed: close the fuel filler
X
cap.
If the fuel filler cap is closed: visit a qualified specialist work-
X
shop.
The temperature sensor for the coolant temperature gage is defec-
tive.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
Pull over and stop the vehicle safely and switch off the engine,
X
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
Secure the vehicle against rolling away (
X
Consult a qualified specialist workshop.
X
page 159).
Y