SMART fortwo 2015, Owner'S Manual, Page: 160 / 228

Problem Possible causes/consequences and
M
Solutions
;
The yellow engine
diagnostics warning
lamp lights up while
the engine is running.
There may be a fault, for example:
R
in the engine management
R
in the exhaust system
R
in the fuel system
R
with the accelerator pedal sensor
X
Visit a qualified specialist workshop immediately.
í
The red battery warning
lamp is lit while the
engine is running. A
warning tone also
sounds.
The battery is not being charged.
Possible causes:
R
faulty alternator
R
the battery is faulty
R
torn poly-V-belt
R
a malfunction in the electronics
X
Stop the vehicle immediately, paying attention to road and
traffic conditions, and switch off the engine.
!
Do not continue driving. The engine could otherwise overheat.
X
Secure the vehicle against rolling away (
Y
page 107).
X
Consult a qualified specialist workshop.
158
Warning and indicator lamps in the instrument cluster
>> On-board computer and displays
.