178 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Malfunction and indicator lamps
in the instrument cluster
General information:
If a bulb in the instrument cluster fails to light up
during the bulb self-check when turning the key in
steering lock to position 2, have it checked and replaced
if necessary.
On-board diagnostic system
Check engine malfunction indicator lamp
Engine malfunction indicator lamp. If the
“CHECK ENGINE” malfunction indicator
lamp comes on when the engine is running,
it indicates a malfunction of the fuel management
system, emission control system, systems which impact
emissions, or the fuel cap is not closed tight (check the
fuel cap). If the “CHECK ENGINE” lamp is illuminated
continuously and the vehicle is driving normally, you
may still drive the vehicle, however, in all cases, we
recommend that you have the system checked at your
authorized Mercedes-Benz Center as soon as possible. If the “CHECK ENGINE” lamp comes on continuously
and / or the vehicle is not driving normally, serious
damage can occur to the emission system. Please
contact your authorized Mercedes-Benz Center
immediately.
The Sequential Multiport Fuel Injection (SFI) control
module monitors emission control components that
either provide input signals to or receive output signals
from the control module. Malfunctions resulting from
interruptions or failure of any of these components are
indicated by the “CHECK ENGINE” malfunction
indicator lamp in the instrument cluster and are
simultaneously stored in the SFI control module.
If the “CHECK ENGINE” malfunction indicator lamp
comes on, have the system checked at your authorized
Mercedes-Benz Center as soon as possible.
With some exceptions, the control module switches off
the “CHECK ENGINE” malfunction indicator lamp if the
condition, causing the lamp to come on, no longer exists
during three consecutive cycles. See also page 181 for
fuel cap placement warning.
248 Technical data
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Te ch n ica l d a t a
Model SLK 230 KOMPRESSOR (170.449)
1
SLK 320 (170.465)
1
Engine111 11 2
Mode of operation 4-stroke engine, gasoline injection 4-stroke engine, gasoline injection
No. of cylinders 4 6
Bore 3.58 in (90.90 mm) 3.54 in (89.90 mm)
Stroke 3.48 in (88.40 mm) 3.30 in (84.00 mm)
Total piston displacement 140.1 cu.in. (2295 cm
3) 195.2 cu.in. (3199 cm
3)
Compression ratio 8.8:1 10:1
Output acc. to SAE J 1349 190 hp / 5300 rpm
(142 kW / 5300 rpm)215 hp / 5700 rpm
(160 kW / 5700 rpm)
Maximum torque acc. to SAE J 1349 200 ft.lb / 2500 rpm
(270 Nm / 2500 rpm)229 ft.lb / 3000 rpm
(310 Nm / 3000 rpm)
Maximum engine speed 5800 rpm 6000 rpm
Firing order 1-3-4-2 1-4-3-6-2-5
Poly-V-belt 1870 mm (routing I, early model)
1875 mm (routing I, late model)
1355 mm (routing II)2390 mm
1 The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies
and special equipment.
