Charge Indicator Lamp
Should the charge indicator lamp fail to come on prior to starting when the electronic key is in steering lock position 2
or should it fail to go out after starting or during operati on, this indicates a fault which must be repaired at an
authorized Mercedes-Benz dealer immediately.
If the charge indicator lamp comes on while the engine is ru nning, this may indicate that the poly-V-belt has broken.
Should this condition occur, the poly-V-bel t must be replaced before continuing to operate the vehicle. Otherwise, the
engine will overheat due to an inoperative water pump which may result in damage to the engine.
Do not continue to drive the vehicle with the charge indicator lamp illuminated. Doing so could result in serious engine
damage that is not covered by the Mercedes-Benz Limited Warranty.
Low Engine Oil Level Warning Lamp
With the electronic key in steering lock position 2, the o il level warning lamp comes on. It should go out immediately
when the engine is running.
If the warning lamp does not go out after starting the engi ne, or comes on with the engine running and at operating
temperature, the engine oil level has dropped to approximately the minimum mark on the dipstick.
When this occurs, the warning lamp will first come on intermittently and then stay on if the oil level drops further.
If no oil leaks are noted, continue to drive to the nearest service station where the engine oil should be topped to the
"full" mark on the dipstick with an approved oil.
The low engine oil level warning light should not be ignored. Extended driving with the light illuminated could result in
serious engine damage that is not covered by the Mercedes -Benz Limited Warranty. In addition to the warning lamp,
the engine oil level should be periodically checked with t he dipstick (or via the odometer display - Model C280 and
C43 AMG only), for example during a fuel stop, or before a long trip (see Engine Oil Level, Checking in Index)
Engine Oil Consumption
Engine oil consumption checks should only be made after the break-in period. During the breaking period, higher oil
consumption may be noticed and is normal. Frequent driving at high engine speeds results in increased consumption.
Fuel Reserve and Fuel Cap Placement Warning Lamp
With the electronic key in steering lock position 2, the fuel reserve warning lamp comes on. It should go out
immediately when the engine is running.
If the warning lamp does not go out after starting the engine, or if it comes on while driving, it indicates that the fuel
level is down to the reserve quantity of approximately 2.1 gal (8 liters).
The warning lamp blinks when the fuel c ap is not closed, or a fuel system leak has been detected. Retighten cap and
see if lamp goes out.
If the warning lamp continues to blink after closing the fuel cap correctly, hav e the fuel system checked at your
authorized Mercedes-Benz dealer as soon as possible.
Leaving the engine running and the fuel cap open can cause the "Check Engine" lamp to illuminate).
Tachometer
Red marking on tachometer: Excessive engine speed. Avoid th is engine speed, as it may result in serious engine
damage that is not covered by the Mercedes-Benz Limited Warranty. For engine protection, the fuel supply is
interrupted if the engine is operated within the red marking.
Seat Belt Warning Lamp
With the electronic key in steering lock position 2, the warning lamp comes on, and a warning sounds for a short time
if the drivers seat belt is not fastened. After starting the engine, the warning lamp blinks for a brief period to remind
the driver and passengers to fasten seat belts.
Low Engine Coolant Level Warning Lamp
With the electronic key in steering lock position 2, the warning lamp comes on.
It should go out when the engine is running. If the warning la mp does not go out after starting the engine, or if it
comes on while driving, then the coolant level has dropped below the required level. If no leaks are noticeable and
the engine temperature does not increase, continue to driv e to the nearest service station and have coolant added to
the coolant system (see Index).
The low engine coolant level warning light should not be ignored. Extended driving with the light illuminated may
cause serious engine damage not covered by the Mercedes-Benz Limited Warranty.
In cases of major or frequent minor coolant loss, have t he cooling system checked at your authorized Mercedes-Benz
dealer as soon as possible.
Note:
Do not drive without coolant in the cooling system. T he engine will overheat causing major engine damage. Monitor
the coolant temperature gauge while driving.
Warning !
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact
with hot engine parts. You can be seriously burned.
Low Windshield and Headlamp Washer System Fluid Level Warning Lamp
With the electronic key in steering lock position 2, the warning 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, the level of the
reservoir has dropped to approx.1/4 of the total volume. T he reservoir should be refilled with MB Windshield Washer
Concentrate "S" and water (or commercially available premixed windshield washer solvent/antifreeze, depending on
ambient temperature - see Index) at the next opportunity. The reservoir fo r the windshield and headlamp washer
systems is located in the engine compartment.
Exterior Lamp Failure indicator Lamp
With the electronic key in steering lock position 2, an exterior 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 la mp, or low beam headlamp. If an exterior lamp fails, the
indicator lamp will come 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 stay on until the engine is turned off.
Note:
If additional lighting equipment is installed (e.g. auxiliary headl amps etc.) be certain to connect into the fuse before
the failure indicator monitoring unit in order to avoid damaging the system.
Brake Pad Wear Indicator Lamp
With the electronic 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 indica tes that the brake pads are worn down. Have the brake
system checked at your authorized Mercedes- Benz dealer as soon as possible.
Brake Warning Lamp
With the electronic 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 rese rvoir (engine running and parking brake released), or
• when the parking brake is set (engine running).
Warning !
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 sp illing brake fluid on hot engine parts and the brake fluid
catching fire. You can be seriously burned.
If you find that the minimum mark on the brake fluid reserv oir is reached, have the brake system checked for brake
pad thickness and leaks. To test the brake warning lamp, turn electronic key in steering lock to position 2. The brake
warning lamp comes on, and should go out when the engine is running.
Flexible Service System (FSS)
The FSS permits a flexible service schedule that is directly related to the operating conditions of the vehicle.
The symbol or appears in the main odometer field prior to the next suggested service. Depending on operating
conditions throughout the year, the next service is calculated and displayed in days or distance remaining.
The message is displayed for approx. 10 seconds when turning the electronic key in steering lock to position 2, or
while driving when reaching the service warning threshold. It can be cancelled manually by pressing button 0.
Once the suggested term has passed, the message plus symbol or , preceded by a - (minus symbol) blinks for
approx 20 seconds and a signal sounds every time when turning the electronic key in steering lock to position 2. The
FSS display
can also be called up for approx.10 seconds with display illuminated by pressing button 0 twice within 1 second.
Following a completed service the Mercedes-Benz dealer sets the counter to 10.000 miles (Canada: 15.000 km) and
365 days.
The counter can also be set by any individual. To do so:
1. Turn electronic key in steering lock to position 2.
2. Within 4 seconds press button 0 twice.
3. The present status for days or distance is displayed. Within 10 seconds turn electronic key in steering lock to
position 0.
4. Press and hold button 0, while turning electronic key in steering lock to position 2 again. The present status for
days
or distance is displayed once more. Continue to hold button 0 After approx. 10 seconds a signal sounds, and the
display shows 10 000 miles (Canada: 15000 km) for approx. 10 seconds.
5. Release button 0. If the FSS counter was inadvertently reset, have a Mercedes -Benz dealer correct it.
Notes:
When disconnecting vehicle battery for one or more days at a time, such days will not be counted. Any such days not
counted by the FSS can be added by your Mercedes-Benz dealer. The interval between services is determined by
the kind of vehicle operation. Driving at extreme speeds, and cold starts combined with short distance driving in which
the engine does not reach normal operating temperature, reduce the interval between services.
Model C 230 Kompressor:
The FSS allows for distances between 10 000 miles (Canada: 16 000 krn) and 15 000 miles (Canada: 25 000 km), or
from 365 to 730 days between services.
Models C 280 and C 43 AMG:
The FSS allows for distances between 10 000 miles (Canada: 15 000 km) and 20 000 miles (Canada: 30 000 km), or
from 365 to 730 days between services. However you choose to set your reference numbers, the scheduled services
as posted in the Service Booklet must be followed to properly care for your vehicle.
Acceleration Slip Regulation (ASR)
The acceleration slip regulation will engage at all vehicle speeds, if one or both drive wheels begin to lose traction
and spin in acceleration. While engaged, the yellow warning lamp in the speedometer dial flashes. With the
acceleration slip regulation engaged, the brake is applied to the spinning drive wheel until slip is brought under
control. If both drive wheels spin, the brake is applied to both drive wheels and simultaneously, engine torque is
limited, to improve the vehicle's driving stability. As traction on the road surface increases, thus allowing
acceleration without slip, the allowable engine torque also increases again and the brake is no longer applied to
drive wheels.
Important !
If the ASR warning lamp flashes, adapt your speed and driving to the prevailing road conditions.
Caution!
If the vehicle is towed with the front axle raised (see Towing the vehicle in Index), the engine must be shut off
(electronic key in steering lock position 0 or 1). Otherwise, the ASR regulation will immediately be
engaged and will apply the rear wheel brakes.
Notes:
The indicator lamp for the ASR is combined with that of the BAS The yellow BAS/ASR malfunction indicator
lamp in the instrument cluster and the yellow ASR warning lamp in the speedometer dial come on with the
electronic key in steering lock position 2. They should go out with the engine running. If the BAS/ASR malfunction
indicator lamp comes on with the engine running, a malfunction has been detected in either system. Pressing the
accelerator pedal will require greater effort. 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 ASR
checked at your authorized Mercedes-Benz dealer as soon as possible. With the ABS malfunctioning, the ASR
is also switched off. Driving the vehicle with varied size tires will cause the wheels to rotate at different speeds,
therefore the ASR may activate (yellow ASR 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 ASR will immediately be engaged
and will apply the rear wheel brakes. In winter operation, the maximum effectiveness of the ASR is only achieved
with Mercedes-Benz recommended M+S rated radial-ply tires and/or snow chains.
ASR Control Switch
ASR control switch located in center console To improve the vehicle's traction when driving with snow chains, or
starting off in deep snow, sand or gravel, press the upper half of the ASR switch. The ASR warning lamp, located
in the speedometer dial, is continuously illuminated. With the ASR system switched off, the engine torque
reduction feature is cancelled. Therefore, the enhanced vehicle stability offered by ASR is unavailable. Adapt your
speed and driving to the prevailing road conditions. A portion of the ASR 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). Note: Avoid spinning of one drive wheel. Doing so may cause serious damage
to the drive train which is not covered by the Mercedes-Benz Limited Warranty.
The ASR warning lamp, located in the speedometer dial, starts to flash at any vehicle speed as soon as the tires
lose traction and the wheels begin to spin. To return to the enhanced vehicle stability offered by ASR: press lower
half of the switch (the ASR warning lamp in the speedometer dial goes out).
Important!
If the ASR warning lamp flashes:
• during take-off, apply as little throttle as possible,
• while driving, ease up on the accelerator.
Electronic Stability Program (ESP) (optional)
The ESP enhances directional control and reduces driving wheel spin of the vehicle under any driving condition.
Over/understeering of the vehicle is counteracted by applying brakes to the appropriate wheel to create a
counterpointing vehicle movement. The ESP warning lamp, located in the speedometer dial, starts to flash.
Important !
If the ESP warning lamp flashes, adapt your speed and driving to the prevailing road conditions.
Caution !
If the vehicle is towed with the front axle raised (see Towing the vehicle in Index), the engine must be shut off
(electronic key in steering lock position 0 or 1). Otherwise, the ESP will immediately be engaged and will apply
the rear wheel brakes.
Notes:
The indicator lamp for the ESP is combined with that of the BAS. The yellow BAS/ESP malfunction indicator lamp
in the instrument cluster and the yellow ESP warning lamp in the speedometer dial come on with the electronic key
in steering lock position 2. They should go out with the engine running. If the BAS/ESP multifunction indicator lamp
comes on permanently with the engine running, a malfunction has been detected in either system.
Pressing the accelerator pedal will require greater effort. 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 dealer 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 electronic
stability program may activate (yellow ESP warning lamp in speedometer dialcomes 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 electronic stability program 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 multifunction 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.
ESP Control Switch
ESP control switch located on center console To improve the vehicle's traction when driving with snow chains, or
starting off in deep snow, sand or gravel, press the upper half of the ESP switch. The ESP warning lamp, 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).
Note:
Avoid spinning of one drive wheel. Doing so may cause serious damage to the drive train which is not covered by the
Mercedes-Benz Limited Warranty. The ESP warning lamp, located in the speedometer dial, starts to flash at any
vehicle speed as soon as the tires lose traction and the wheels begin to spin. To return to the enhanced vehicle
stability
offered by ESP: press lower half of the switch (the ESP warning lamp in the speedometer dial goes out).
Winter Driving
Have your car winterized at your authorized Mercedes-Benz dealer before the onset of winter.
• Change the engine oil if the engine contains an oil which is not approved for winter operation.
For viscosity (SAE/CCMC class) and filling quantity, see Capacities: Fuels, Coolants,
Lubricants etc. in Index.
• Check engine coolant anticorr osion/antifreeze concentration.
• Additive for the windshield washer and headl amp cleaning system: Add MB Concentrate "S"
to a premixed windshield washer solvent/ant ifreeze which is formulated for below freezing
temperatures (see Index).
• Test battery: Battery capacity drops with dec reasing ambient temperature. A well charged
battery helps to ensure that the engine can be started, even at low ambient temperatures.
• Tires: We recommend M+S rated radial-ply tires on all four wheels for the winter season.
Observe permissible maximum speed for M+S rated radial-ply tires and the legal speed limit.
Note:
In winter operation, the maximum effectiveness of the Antilock Brake System (ABS), Acceleration Slip Regulation
(ASR) or the Electronic Stab ility Program (ESP) can only be achieved with M+S rated radial-ply tires and/or snow
chains recommended by Mercedes-Benz. Snow chains maximize performance.
Snow Chains
Use only snow chains that are tested and recommended by Mercedes-Benz. Your authorized Mercedes-Benz
dealer will be glad to advise you on this subject. Ch ains should only be used on the rear wheels.
Follow the manufacturer's mounting instructions. Snow ch ains should only be driven on snow covered roads at
speeds not to exceed 30 mph (50 km/h). Remove chains as soon as possible when driving on roads without snow.
For tips on driving on slippery winter roads, refer to In dex. Vehicles with Acceleration Slip Regulation (ASR) or
Electronic Stability Program (ESP): When driving with snow chains, press the ASR or ESP control switch, refer to
Index.
Model C 43 AMG
Important !
Use of snow chains is permissible only on winter tire size 215/45 R 17 H M+S. Refer to "Rims - Tires" in section
"Technical Data" (see Index).
Travelling Abroad
Abroad, there is a widely-spread Mercedes-Benz service network at your disposal. If you plan to travel into areas
which are not listed in the index of your dealer directory, you should request pertinent information from your
authorized Mercedes-Benz dealer.