Tyre Pressure Monitor - SMART fortwo coupe Owner's Manual

Problem
h The yellow tyre
pressure moni-
tor warning
lamp (pressure
loss/malfunc-
tion) is lit.
h The yellow tyre
pressure moni-
tor warning
lamp (pressure
loss/malfunc-
tion) flashes
for approx-
imately one
minute and then
remains lit.
þ The yellow
drive diagnos-
tics warning
lamp lights up
when the igni-
tion is
switched on.
þ The yellow
drive diagnos-
tics warning
lamp lights up
while driving.
Possible causes/consequences and M Solutions
There may be a fault in the vehicle's 12‑volt electrical system.
X
It is advisable to have your vehicle transported by a vehicle
from a qualified specialist workshop.
Do not tow the vehicle.
The tyre pressure monitor has detected a loss of pressure in at
least one of the tyres.
X
Stop the vehicle without making any sudden steering or
braking manoeuvres. Pay attention to the traffic conditions
as you do so.
X
Secure the vehicle to prevent it from rolling away.
X
Check the tyre pressure and, if necessary, correct
Y
( page 125).
When the tyre pressure on the corresponding tyre has been
corrected, the tyre pressure monitor warning lamp (pressure
loss/malfunction) will go out after a few minutes of driving.
The tyre pressure monitor is faulty.
The system is possibly unable to recognise or register low tyre
pressure.
X
Visit a qualified specialist workshop.
The indicator lamp goes out after three seconds if there are no
malfunctions in the engine electronics.
There may be a malfunction.
X
Consult a specialist workshop which is qualified for smart
electric drive vehicles, e.g. a smart Centre, without delay.
Troubleshooting
Z
145