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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.
Page 115 of 130

Spare Parts Service
C 280, C 43 AMG
1. Automatic belt tensioner
2. Crankshaft:
3. Air conditioner compressor
4. Generator (alternator)
5. Idler pulley
6. Power steering pump
7. Coolant pump, fan
For dimensions of the poly-V-belt, see Technical Data in Index.
Spare Parts Service
All authorized Mercedes-Benz dealers maintain a stock of original spare parts required for maintenance and repair
work. In addition, strategically located parts distribution centers provide quick and reliable parts service. More than
300,000 different spare parts, for other Mercedes-Benz models, are available.
Mercedes-Benz original spare parts are subjected to the most stringent quality inspections. Each part has been
specifically developed, manufactured or selected for and adapted to Mercedes-Benz vehicles. Therefore, Mercedes-
Benz original spare parts should be installed.
Important !
The use of non-genuine parts and accessories not authorized by Mercedes-Benz could damage the vehicle or
compromise its durability or safety.
Page 117 of 130
Warranty Coverage
Your car is covered under the terms of the "warranties" printed in the Owner's Service and
Warranty Information booklet and your authoriz ed Mercedes-Benz dealer will exchange or
repair any defective parts in accordance wi th the terms of the following warranties:
1. New vehicle limited warranty
2. Emission systems warranty
3. Emission performance warranty
4. California and Massachusetts emission control systems warranty.
Loss of Owner's Service and Warranty Information Booklet
Should you lose your Owner's Service and Warr anty Information booklet, have your authorized
Mercedes-Benz dealer arrange for a replacement. It will be mailed to you.
Page 125 of 130

Coolants
The engine coolant is a mixture of water and anticorrosion/antifreeze, which provides:
• corrosion protection,
• freeze protection,
• boiling protection (by increasing the boiling point).
The cooling system was filled at the factory with a coolant providing freeze protection to approx. -22°F
(-30°C) and corrosion protection. The coolant solution must be used year round to provide the
necessary corrosion protection and increase in the boil-over protection. You should have it replaced
every 3 years. To provide the important corrosion protection, the solution must be at least 45%
anticorrosion/antifreeze (equals a freeze protection to approx. -22°F [-30°C]). If you use a solution
that is more than 55% anticorrosion/antifreeze (freeze protection to approx. -49°F [-45°C]), the engine
temperature will increase due to the lower heat transfer capability of the solution. Therefore, do not
use more than this amount of anticorrosion/antifreeze. If the coolant level is low, water and MB
anticorrosion/antifreeze should be used to bring it up to the proper level (have cooling system
checked for signs of leakage). The water in the cooling system must meet minimum requirements,
which are usually satisfied by normal drinking water. If you are not sure about the water quality,
consult your authorized Mercedes-Benz dealer.
Anticorrosion/antifreeze
Your vehicle contains a number of aluminum parts. The use of aluminum components in motor
vehicle engines necessitates that anticorrosion/antifreeze coolant used in such engines be specifically
formulated to protect the aluminum parts. (Failure to use such anticorrosion/antifreeze coolant will
result in a significantly shortened service life.)
Therefore the following product is strongly recommended for use in your car: Mercedes-Benz
Anticorrosion/Antifreeze Agent. Before the start of the winter season (or once a year in the hot
southern regions), you should have the anticorrosion/antifreeze concentration checked. The coolant is
also regularly checked each time you bring your vehicle to your authorized Mercedes-Benz dealer for
service.
Model Approx.freeze Protection
-35°F
(~37°C)
-49°F
(-45°C)
C 230 Kompressor 5.0 US qt
(4.75 I)
5.5 US qt
(5.25 I)
C 280 5.3 US qt
(5.0 I)
5.8 US qt
(5.5 I)
C 43 AMG 5.9US qt
(5.6 I)
6.6 US qt
(6.2 I)
Page 129 of 130
Service and Literature
Your authorized Mercedes-Benz dealer has trained technicians and original Mercedes-Benz parts to
service your vehicle properly. For expert advice and quality service, see your authorized
Mercedes-Benz dealer. If you are interested in obtai ning service literature for your vehicle, please
contact your authorized Mercedes-Benz dealer.
We consider this to be the best way for you to obtain accurate information for your vehicle.
Warning !
To help avoid personal injury, be extremely carefu l when performing any service work or repairs.
Improper or incomplete service or the use of in correct or inappropriate parts or materials may
damage the vehicle or its equipment, which may in turn result in personal injury. If you have any
question about carrying out some service, turn to the advice of an authorized Mercedes-Benz dealer.