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What to do if ...
238
>> Practical hints. Battery indicator lamp
Illuminates:
• when the ignition is switched on.
The indicator lamp goes out if the engine is
running.
If the Battery indicator lamp illuminates while
driving or does not go out after the engine is
started, the battery is no longer charged.
Possible causes:
• Alternator malfunctioning
• Broken polyVbelt>Stop the vehicle immediately in a safe
location.
>Do not continue to drive.
>Turn off the engine.
>Set the parking brake when leaving the
vehicle.
>Contact Roadside Assistance or an autho
rized smart center.
!
Among other possible causes, the
polyVbelt could be broken. Do not continue
to drive. Otherwise, the engine will overheat
due to an inoperative water pump which may
result in damage to the engine.Brake warning lamp (USA only)
Brake warning lamp (Canada only)
Illuminates:
• when the ignition is switched on.
Goes out:
• at least after 10 seconds
or
• after starting the engine.
Page 240 of 314

What to do if ...
>> Practical hints.
239
• with the parking brake set.
• if the brake circuit fails or the brake fluid
level in the brake fluid reservoir is too low.
>Stop the vehicle immediately in a safe
location.
>Do not continue to drive.
>Turn off the engine.
>Do not add brake fluid as this will not solve
the problem.
>Set the parking brake when leaving the
vehicle.
>Contact Roadside Assistance or an autho
rized smart center.
!
If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark
or below, have the brake system checked for
brake pad thickness and leaks.
• together with the ABS indicator lamp
(page 237) when the ABS system fails.
>Stop the vehicle immediately in a safe
location.
>Do not continue to drive.
>Turn off the engine.
>Set the parking brake when leaving the
vehicle.
• Contact Roadside Assistance or an autho
rized smart center.Combination low tire pressure/
TPMS malfunction telltale
Illuminates continuously:
• when the TPMS detects a loss of pressure in
at least one tire.
>Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers. Observe the traffic situation
around you
.
>Check and correct tire inflation pressure
as required (
page 190).
G
Warning!
Driving with the brake warning lamp illu
minated can result in an accident. Have
your brake system checked immediately
if the brake warning lamp stays on.
Do not add brake fluid before checking
the brake system.
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What to do if ...
240
>> Practical hints. If the tire inflation pressure in the respective
tire(s) has (have) been corrected, the combi
nation low tire pressure/TPMS malfunction
telltale goes out after a few minutes of driv
ing. See also "Restarting the TPMS"
(
page 194).
Flashes 60 seconds and then stays
illuminated:
• when there is a malfunction in the TPMS.
>Have the TPMS checked at an authorized
smart center.
After the malfunction has been remedied the
combination low tire pressure/TPMS mal
function telltale goes out after a few minutes
of driving.
G
Warning!
Each tire should be checked monthly
when cold and inflated to the inflation
pressure recommended by the vehicle
manufacturer on the Tire and Loading
Information placard on the driver’s door
BPillar (
page 185) . If your vehicle has
tires of a different size than the size in
dicated on the Tire and Loading Informa
tion placard you should determine the
proper tire inflation pressure for those
tires.
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS) that illumi
nates a low tire pressure telltale when
one or more of your tires is significantly
underinflated.
Accordingly, when the low tire pressure
telltale illuminates, you should stop and
check your tires as soon as possible, and
inflate them to the proper pressure.
Driving on a significantly underinflated
tire causes the tire to overheat and can
lead to tire failure.
Underinflation also reduces fuel effi
ciency and tire tread life, and may affect
the vehicle’s handling and stopping
ability. Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver’s responsibility to
maintain correct tire pressure, even if
underinflation has not reached the level
to trigger illumination of the TPMS low
tire pressure telltale.
Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating
properly. The TPMS malfunction indicator
is combined with the low tire pressure
telltale.
Page 242 of 314

What to do if ...
>> Practical hints.
241
Coolant temperature warning lamp
Illuminates:
• when the ignition is switched on.
The warning lamp goes out if the engine is
running.
• if the coolant is too hot.
>Stop the vehicle immediately in a safe
location.
>Do not continue to drive.
>Turn off the engine.
>Set the parking brake when leaving the
vehicle.
>Contact Roadside Assistance or an autho
rized smart center.If the coolant level has fallen below the
marking bar on the coolant reservoir
(
page 178):
>Add coolant as required.
>Have the coolant system checked for leaks
at an authorized smart center.
!
Among other possible causes, the
polyVbelt could be broken. Do not continue
to drive. Otherwise, the engine will overheat
due to an inoperative water pump which may
result in damage to the engine.
When the system detects a malfunction,
the telltale will flash for approximately
1 minute and then remain continuously
illuminated.
This sequence will continue upon subse
quent vehicle startups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may
not be able to detect or signal low tire
pressure as intended.
TPMS malfunctions may occur for a vari
ety of reasons, including the installation
of incompatible replacement or alternate
tires or wheels on the vehicle that pre
vent the TPMS from functioning properly.
Always check the TPMS malfunction tell
tale after replacing one or more tires or
wheels on your vehicle to ensure that the
replacement or alternate tires and
wheels allow the TPMS to continue to
function properly.
G
Warning!
Driving when your engine is overheated
can cause some fluids, which may have
leaked into the engine compartment, to
catch fire. You could be seriously burned.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until
the engine has cooled down.
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What to do if ...
242
>> Practical hints. Engine malfunction indicator lamp
Illuminates:
• when the ignition is switched on.
Goes out:
• at least after 10 seconds if the engine elec
tronics are functioning properly
or
• after starting the engine.
If illuminated while driving:
>Have the vehicle checked at an authorized
smart center immediately.
i
Some states may by law require you to visit
a workshop as soon as the engine malfunction
indicator lamp comes on. Check local require
ments.Engine oil pressure indicator lamp
i
The engine oil pressure indicator lamp
indicates low engine oil pressure.
Check the engine oil level at regular intervals
(page 173).
Illuminates:
• when the ignition is switched on.
The indicator lamp goes out after starting
the engine and if there is sufficient engine
oil pressure.
If illuminated while driving:
>Stop the vehicle immediately in a safe
location.
>Do not continue to drive.
!
The engine oil pressure indicator lamp
should not be ignored. Extended driving with
the indicator lamp illuminated could result in
serious engine damage that is not covered by
the smart Limited Warranty.
>Turn off the engine.
>Set the parking brake when leaving the
vehicle.
>Contact Roadside Assistance or an autho
rized smart center.
Goes out:
• before the engine starts.
The indicator lamp has failed.
>Check the engine oil level.
>Have the system checked at an authorized
smart center.
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What to do if ...
246
>> Practical hints. Flashes with increasing frequency of a warn
ing chime:
• if the vehicle speed once exceeds
15 mph (25 km/h), the seat belt
telltale< starts flashing and a warning
chime sounds with increasing intensity for a
maximum of 60 seconds or until both the
driver’s and passenger’s seat belt are fas
tened.
If the driver’s or the passenger’s seat belt
remains unfastened after 60 seconds, the
warning chime stops sounding. The seat belt
telltale< stops flashing but continues to
be illuminated
.
The seat belt telltale< will only go out if
both the driver’s and the passenger’s seat
belt (with the passenger seat occupied) are
fastened, or the vehicle is standing still and a
door is opened.SRS indicator lamp
The SRS indicator lamp signals to you that
there is a malfunction in the supplemental
restraint system of the
•Air bags
• Emergency Tensioning Devices
i
Information on the operating principle of
the air bags can be found in the "Safety"
section (
page 54).
Illuminates:
• when the ignition is switched on
(selfcheck).
G
Warning!
If the SRS indicator lamp does not come
on when you switch on the ignition or does
not go out again after a few seconds once
the engine is running or comes on again,
the supplemental restraint systems are
malfunctioning.
In the event that a malfunction of the SRS
is indicated as described in scenario 2,
the SRS may not be operational. For your
safety, we strongly recommend that you
contact an authorized smart center im
mediately to have the system checked; A
malfunctioning SRS system may not de
ploy when needed in an accident result
ing in serious or fatal injury, or it might
deploy unexpectedly and unnecessarily
which could result in an accident and/or
injury to you or to others
Page 252 of 314
Unlocking/locking manually
>> Practical hints.
251 Closing the rear soft top
If the rear soft top does not lock properly
after being closed, proceed as follows:
>Stop the vehicle in a safe location.
>Set the parking brake.
>Make sure that the key in the starter switch
is turned to position1.
>Fold up the rear soft top completely.
The rear soft top stops in the unlocked
position.
>Within one minute, press and hold
symbol± on the retractable soft top
switch for 15 seconds twice.
The rear soft top closes the locking hooks.
>Close the retractable soft top completely.
>Have the rear soft top checked at an autho
rized smart center.
Page 254 of 314
Replacing transmitter battery
>> Practical hints.
253 Replacing transmitter battery
Replacement battery: CR 2016 button cell!
Replace the remote control's transmitter
battery every two years at the latest. Other
wise there is a danger of leakage. The remote
control could be damaged.
1
Key housing top half>Insert a suitable object such as a coin into
the slot at the eyelet of the key housing.
>Carefully turn the coin until key housing top
half
1 is unlatched.
>Open key housing top half
1 to the side.
2
Transmitter battery
>Remove transmitter battery
2 from the
board.
!
Check the polarity when inserting the new
transmitter battery. You could otherwise
damage parts of the electrical system. When
inserting the batteries, make sure they are
clean and free of lint.
>Insert the new transmitter battery.
>Press both halves of the key housing
together again.
>Check the operation of the remote control.
P80.35228931