SMART FORTWO 2018 Owner's Manual page 207

Problem
The yellow ^
warning lamp lights
up while driving.
Dis‐
Colour display:
tance warning inop‐
erative Electron‐
or
ics malfunction
Visit workshop
appears.
The yellow ^
warning lamp lights
up while driving.
Colour display:
Active Brake
Assist inoperative
Electronics mal‐
or
function Visit
workshop
appears.
^ and C as well
as other warning
lamps are lit.
Possible causes/consequences and M Solutions
The sensors in the radiator trim are dirty.
X
Clean the sensors.
Environmental influences or error sources outside the system
are temporarily interfering with the forward collision warning.
Possible causes:
heavy rain or snow
R
operating temperature is too high
R
on-board voltage is too low
R
The forward collision warning is operational again when the
causes listed no longer apply.
Warning lamp remains lit:
X
Pull over and stop the vehicle, paying attention to road and
traffic conditions.
X
Clean the sensors.
X
Restart the engine.
Warning lamp still remains lit:
X
Consult a qualified specialist workshop.
The sensors in the radiator trim are dirty.
X
Clean the sensors.
Environmental influences or error sources outside the system
are temporarily interfering with Active Brake Assist and radar-
assisted recuperation. Possible causes:
heavy rain or snow
R
operating temperature is too high
R
on-board voltage is too low
R
Active Brake Assist is automatically operational again when the
causes listed no longer apply.
Warning lamp remains lit:
X
Pull over and stop the vehicle, paying attention to road and
traffic conditions.
X
Clean the sensors.
X
Restart the engine.
Warning lamp still remains lit:
X
Consult a qualified specialist workshop.
The central vehicle electronics system is malfunctioning.
After switching off the engine, it is no longer possible to lock or
unlock the doors using the remote control on the key or to start
the engine.
X
Pull over and stop the vehicle, paying attention to road and
traffic conditions.
X
Consult a qualified specialist workshop.
Driver assistance systems
205
Z