2001 MERCEDES-BENZ SLK-Class brake

171 Driving systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Notes:
Th e m alf unction indicator l amp for t he ESP is combined
with that of the BAS.
The yellow BAS / ESP malfunction indicator lamp in the
instrument cluster and the yellow ESP warning
lampv in the speedometer dial come on with the
key in steering lock position 2. They should go out with
the engine running.
If the BAS / ESP malfunction indicator lamp comes on
continuously with the engine running, a malfunction
has been detected in either system. Only partial engine
output will be available.
If the BAS malfunctions, the brake system functions in
the usual manner, but without BAS.
Have the BAS or ESP checked at your authorized
Mercedes-Benz Center as soon as possible.
With the ABS malfunctioning, the ESP is also switched
off.Driving the vehicle with varied size tires will cause the
wheels to rotate at different speeds, therefore the ESP
may activate (yellow ESP warning lamp in speedometer
dial comes on). For this reason, all wheels, including the
spare wheel, must have the same tire size.
When testing the parking brake on a brake test
dynamometer, the engine must be shut off. Otherwise,
the ESP will immediately be engaged and will apply the
rear wheel brakes.
In winter operation, the maximum effectiveness of the
ESP is only achieved with Mercedes-Benz recommended
M+S rated radial-ply tires and / or snow chains.
Synchronizing ESP
If the power supply was interrupted (battery
disconnected or empty), the BAS / ESP malfunction
indicator lamp may be illuminated with the engine
running.
Turn steering wheel completely to the left and then to
the right. The BAS / ESP malfunction indicator lamp
should go out.

172 Driving systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
ESP Control switch
ESP control switch located in center console.
1Press to switch ESP off
ESP warning lampv, located in speedometer
dial, comes on.
2Press to switch ESP on
ESP warning lampv, located in speedometer
dial, goes out.To improve the vehicle’s traction when driving with
snow cha ins, or sta rting of f in deep snow, sand or gravel,
switch off ESP by pressing the upper half (1) of the ESP
switch. The ESP warning lampv, located in the
speedometer dial, is continuously illuminated.
With the ESP system switched off, the engine torque
reduction feature is cancelled. Therefore, the enhanced
vehicle stability offered by ESP is unavailable.
Adapt your speed and driving to the prevailing road
conditions.
A portion of the ESP system remains active, even with
the switch in the OFF position.
If one drive wheel loses traction and begins to spin, the
brake is applied until the wheel regains sufficient
traction. The traction control engages at vehicle speeds
up to approximately 24 mph (40 km / h), and switches
off at 50 mph (80 km / h).
Wa r n i n g !
When the ESP warning lamp is illuminated
continuously, the ESP is switched off. Adapt you r speed and dri ving to th e prevailing road
conditions.

176 Check regularly and before a long trip
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Check regularly and before a long trip
SLK 230 Kompressor shown1Windshield washer and
headlamp cleaning system
For refilling reservoir, see page 195.
2Coolant level
See “Adding coolant” on page 194.
3Engine oil level
See “Checking engine oil level” on page 193 and
“Engine oil level indicator” on page 77.
4Brake fluid
See “Brake fluid” on page 254.
Opening hood, see page 190.
Ve h i c l e l i g h t i n g : Check function and cleanliness. For
replacement of light bulbs, see “Exterior lamps” on
page 218.
Exterior lamp switch, see page 79.

177 Contents - Instrument cluster display
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Instrument cluster displayMalfunction and indicator
lamps in the instrument
cluster ......................................... 178
On-board
diagnostic system ....................... 178
Check engine malfunction
indicator lamp ............................. 178
Brake warning lamp .................. 179
Brake pad wear
indicator lamp ............................. 180
Seat belt nonusage
warning lamp .............................. 180Supplemental restraint system
(SRS) indicator lamp ..................180
Fuel reserve and fuel cap
placement warning .................... 181
Electronic stability program
(ESP) — warning lamp ................181
BAS / ESP malfunction
indicator lamp ............................. 181
ABS malfunction
indicator lamp .............................182
Telescoping steering
column warning lamp ................182
Low engine coolant level
warning lamp ..............................183Low windshield and
headlamp washer system
fluid level warning lamp ........... 183
Low engine oil level
warning lamp .............................. 184
Charge indicator lamp ............... 184
Exterior lamp failure
indicator lamp ............................. 185
Additional function
indicator lamps
(in the odometer display) .......... 185
Malfunction and indicator
lamp in the
center console ........................... 185
AIRBAG OFF indicator lamp ..... 185

179 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index An on-board diagnostic connector is located in the
passenger compartment near the engine hood release,
allowing the accurate identification of system
malfunctions through the readout of diagnostic trouble
codes.
Brake warning lamp
Except Canada
Canada only
With the key in steering lock position 2, the brake
warning lamp will come on. It should go out when the
engine is running.
The brake warning lamp will come on:
•when there is insufficient brake fluid in the
reservoir (engine running and parking brake
released), or
•when the parking brake is set (engine running).Note:
If you find that the minimum mark on the brake fluid
reservoir is reached, have the brake system checked for
brake pad thickness and leaks.
Wa r n i n g !
Driving with the brake warning lamp illuminated
can result in an accident. Have your brake system
checked immediately if the brake warning lamp
stays on. Don’t add brake fluid before checking the
brake system. Overfilling the brake fluid reservoir
can result in spilling brake fluid on hot engine
parts and the brake fluid catching fire. You can be
seriously burned.

180 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Brake pad wear indicator lamp
With the key in steering lock position 2, the
brake pad wear indicator lamp comes on. It
goes out when the engine is running.
If the indicator lamp lights up during braking, this
indicates that the brake pads are worn down.
Have the brake system checked at your authorized
Mercedes-Benz Center as soon as possible.
Seat belt nonusage warning lamp
With the key in steering lock position 2, the
seat belt warning lamp comes on, and a
warning sounds for a short time if the
driver’s seat belt is not fastened.
After starting the engine, the seat belt warning lamp
blinks for a brief period to remind the driver and
passengers to fasten seat belts.Supplemental restraint system (SRS) indicator lamp
The operational readiness of the airbag
system is verified by the indicator lamp
“SRS” in the instrument cluster when
turning the key in steering lock to position 1 or 2. If no
fault is detected, the lamp will go out after
approximately 4 seconds; after the lamp goes out, the
system continues to monitor the components and
circuitry of the airbag system and will indicate a
malfunction by coming on again.
See page 53 for notes on airbags, see page 52 for belt
tensioners and page 44 for infant and child seat
restraint.
Wa r n i n g !
In the event a malfu nction of th e “SRS” is indic ated
as outlined above, the “SRS” may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to have the
system checked; otherwise the “SRS” may not be
activated when needed in an accident, which could
result in serious or fatal injury, or it might deploy
unexpectedly and unnecessarily which could also
result in injury.

182 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
ABS malfunction indicator lamp
The ABS malfunction indicator lamp in the
instrument cluster comes on with the key in
steering lock position 2 and should go out
with the engine running.
When the ABS malfunction indicator lamp symbol and
warning in the instrument cluster come on while the
engine is running, it indicates that the ABS has detected
a malfunction and has switched off. In this case, the
brake system functions in the usual manner, but
without antilock assistance.
With the ABS malfunctioning, the BAS and ESP are also
switched off. Both malfunction indicator lamps come on
with the engine running.
If the charging voltage falls below 10 volts, the
malfunction indicator lamp comes on and the ABS is
switched off. When the voltage is above this value again,
the malfunction indicator lamp should go out and the
ABS is operational.
Have the system checked at your authorized
Mercedes-Benz Center as soon as possible.
See page 168 for notes on antilock brake system (ABS).Telescoping steering column warning lamp
With the key in steering lock position 2, the
indicator lamp in the instrument cluster
comes on. It should go out when the engine
is running.
If the indicator lamp does not go out after starting the
engine, the adjustable steering column is not locked
properly.
Important!
Do not drive the vehicle until you have properly locked
the steering column.
ABS

185 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Exterior lamp failure indicator lamp
With the key in steering lock position 2, an
indicator lamp comes on. It should go out
when the engine is running.
If the warning lamp does not go out after starting the
engine, or if it comes on while driving, this lamp
indicates a failure in the parking lamp, taillamp, stop
lamp, or low beam headlamp.
If an ex terior la mp fa il s, t he indicator la mp w ill c ome on
only when that lamp is switched on.
If a brake lamp fails, the lamp failure indicator will
come on when applying the brake and stays on until the
engine is turned off.
Note:
If additional lighting equipment is installed (e.g.
auxiliary headlamps etc.) be certain to connect into the
fuse before the failure indicator monitoring unit in
order to avoid damaging the system.Additional function indicator lamps
(in the odometer display)
FSS indicator (distance, Service A),
see page 75.
FSS indicator (distance, Service B)
see page 75.
FSS indicator (days, Service A), see page 75.
FSS indicator (days, Service B), see page 75.
Start lock-out malfunction, see page 24.
Malfunction and indicator lamp in the
center console
AIRBAG OFF indicator lamp
Passenger front airbag automatically
switched off, see page 53.
AIRBAGOFF