1999 MERCEDES-BENZ C-CLASS check engine

Example



Checking Coolant Level
To check the coolant level, the vehicle must be parked on level ground and the engine stopped.
Check coolant level only when coolant is cold.


Adding Coolant
If coolant has to be added, a 50/50 mixture of water and MB anticorrosion/antifreeze should be added. The drain
plugs
for the cooling system are located on the right side of the engine block and at the bottom of the radiator.
Anticorrosion/antifreeze, see Coolants in Index.


Warning!
In order to avoid possibly serious burns:
•Use extreme caution when opening the hood if there are any signs of steam or coolant leaking from the
cooling system, or if the coolant temperature gauge indicates that the coolant is overheated.
•Do not remove pressure cap on coolant reservoir if engine temperature is above 194°F (90°C). Allow
engine to cool down before removing cap. The coolant reservoir contains hot fluid and is under pressure.
•Using a rag, slowly open cap approximately 1/2 turn to relieve excess pressure. If opened immediately,
scalding hot fluid and steam will be blown out under pressure.
•Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes
into contact with hot engine parts.


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Checking Engine Oil Level
Example



1.
Oil dipstick
2. Oil filler cap

To check the engine oil level, park vehicle on level ground, with engine at normal oper ational temperature. Check
engine
oil level approximately 5 minutes after stopping the engine, allowing for the oil to return to the oil pan.


Oil Dipstick:
Wipe oil dipstick clean prior to checking the engine oil level. Fully insert dipstick in tube, and remove after three
seconds to obtain accurate reading.


Oil level must be between the
lower (min) and upper (max)
mark of the dipstick.



Fill quantity between upper and lower dipstick markin
g level is approximately 2.1 US qt (2.0 I).
Do not overfill the engine.

Excessive oil must be drained or siphoned. It could cause damage to engine and catalytic converter not covered by
the Mercedes-Benz Limited Warranty.
For low engine oil level warning lamp, see Index.


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Odometer Display Field
(Models C 280 and C 43 AMG)

Turn electronic key in steering lock to position 2 and wait until the symbols
and appears in the
odometer display field. Within 1 second press button 0 twice.


The following messages are available:
"OK"
"-1.0 Q" (Canada: -1.0 L)
"-1.5 Q" (Canada: -1.5L)
"-2.0 Q" (Canada: -2.0 L)
Add oil to upper (max) mark of the dipstick."HI"

Do not overfill the engine.
Excessive oil must be drained or siphoned. It could caus e damage to engine and catalytic converter not covered
by the Mercedes-Benz Limi ted Warranty. The symbol
flashes in the odometer field if a proper oil level check
cannot be performed. The oil level check
can be repeated after a short while. Perform the oil level check with the dipstick, if it cannot be completed via the
odometer display field. In this case we recommend that you have the system checked at a Mercedes-Benz dealer.


Automatic Transmission Fluid Level
The transmission has a permanent fill of automatic tran smission fluid. Regular automatic transmission fluid
level checks and changes are not required. For this reason the dipstick is omitted. If you notice fluid leaks or
gear shifting malfunctions, have your authorized Mercede s-Benz dealer check the transmission fluid level.


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Battery

Warning !
Failure to follow these instructions can result in severe injury or death. Never lean over batteries while
connecting, you might get injured. Battery fluid contains sulfuric acid. Do not allow this fluid to come in
contact with eyes, skin or clothing. In case it does, immediately flush affected area with water and seek
medical help if necessary. A battery will also produ ce hydrogen gas, which is flammable and explosive.
Keep flames or sparks away from battery, avoid im proper connection of jumper cables, smoking etc..

Important !
Battery maintenance information:
The battery is located in the trunk under the trunk floor. The fluid level must be checked at every A and B service.
Always insure that the fluid level is at the specified maximum level and that only distilled water is used. Failure to
maintain proper fluid level may result in cell deterioration and possible battery rupture. The service life of the battery is
dependent on its condition of charge. The battery should alwa ys be kept sufficiently charged, in order to last an
optimum length of time.
Therefore, we strongly recommend that you have the battery charge checked frequently, and corrected if
necessary, especially if you use the vehicle less than approximately 200 miles (300 km) per month, mostly for
short distance trips, or if it is not used for long periods of time.
Only charge a battery with a battery charger after the battery has been disconnected from the vehicle electrical circuit.
Always disconnect the battery negative lead first and connect last. When removing and connecting the battery,
always make sure that all electrical consumers are off and the electronic key is in steering lock position 0. The battery
and its vent tube must always be securely installed when the car is in operation. While the engine is running the
battery terminal clamps must not be loosened or detached, otherwise the generator and other electronic components
would be damaged.

Note:
After reconnecting the battery al so resynchronize the Express feature of the power windows
(see Power Windows in Index).

Battery Recycling
Batteries contain materials that can harm the environment with improper disposal. Large 12 Volt storage batteries
contain lead. Recycling of batteries is the preferred method of disposal. Many states require sellers of batteries to
accept old batteries for recycling.


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Cleaning and Care of the Vehicle

Warning !
Many cleaning products can be hazardous. Some are poisonous, others are flammable.
Always follow the instructions on the particular container. Always open your car's doors or
windows when cleaning the inside. Never use fluids or solvents that are not designed for
cleaning your car.

In operation, your vehicle is subjected to varying external influences which, if gone unchecked, can
attack the paintwork as well as the underbody and cause lasting damage.
Such damage is caused not only by extreme and varying climatic conditions, but also by air
pollution, road salt, tar, gravel and stone chipping. Grease and oil, fuel, coolant, brake fluid, bird
droppings, insects, tree resins etc. should be removed immediately to avoid paint damage. Frequent
washing reduces and/or eliminates the aggr essiveness and potency of the above adverse
influences.
More frequent washings are necessary to deal with unfavorable conditions; for example, near the
ocean, in industrial areas (smoke, exhaust emissions), or during winter operation.
You should check your vehicle from time to time for stone chipping or other damage. Any damage
should be repaired as soon as possible to prevent the start of corrosion. In doing so, do not neglect
the underside of the car. A prerequisite for a t horough check is a washing of the underbody followed
by a thorough inspection. Damage d areas need to be reundercoated.
Your vehicle has been treated at the factory with a wax-base rustproofing in the body cavities which
will last for the lifetime of t he vehicle. Post-production treatment is neither necessary nor
recommended by Mercedes-Be nz because of the possibility of incompatibility between materials
used in the production proc ess and others applied later.
We have selected car care products and compiled recommendations which are specially matched to
our vehicles and which always reflect the late st technology. You can obtain Mercedes- Benz
approved car care products at your authorized Mercedes-Benz dealer.
Scratches, corrosive deposits, corrosion or damage due to negligent or incorrect care cannot always
be removed or repaired with the car care products recommended here. In such cases it is best to
seek aid at your authorized Mercedes-Benz dealer. The following topics deal with the cleaning and
care of your vehicle and give important "how-to" in formation as well as references to Mercedes-Benz
approved car care products. Additional information can be found in the booklet titled "Car Care".


Engine Cleaning
Prior to cleaning the engine compartment make sure to protect electrical components and
connectors from the intrusion of water and cleaning agents.
Corrosion protection, such as MB Anticorrosion Wax should be applied to the engine compartment
after every engine cleaning. Before applying, all control linkage bushings and joints should be
lubricated. The poly-V-belt and all pulleys should be protected from any wax.


Car Washing
Do not use hot water or wash your car in direct sunlight. Use only a mild car wash detergent, such
as Mercedes-Benz approved Car Shampoo.
Thoroughly spray the car with a diffused jet of wa ter. Direct only a very weak spray towards the
ventilation intake. Use plenty of water an d rinse the sponge and chamois frequently.
Rinse with clear water and thoroughly wipe dry with a chamois. Do not allow cleaning agents to dry
on the finish. If the vehicle has been run through an automatic car wash - in particular one of the
older installations - rewipe the recessed sections in the taillamps (designed to prevent soiling) if
necessary. No solvents (fuels, thi nners etc.) must be used. In the winter, thoroughly remove all
traces of road salt as soon as possible.
When washing the underbody, do not forget to clean the inner sides of the wheels.


Tar Stains
Quickly remove tar stains before they dry and beco me more difficult to remove. A tar remover is
recommended.


Window Cleaning
Use a window cleaning solution on all glass surfac es. An automotive glass cleaner is recommended.


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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 mu st 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 leas t 45% anticorrosion/antifreeze (equals a freeze protection
to approx. -22°F [-30°C]). If you use a solution that is mo re than 55% anticorrosion/antifreeze (freeze protection to
approx. -49°F
[-45°C]), the engine temperature will increase due to the lo wer heat transfer capability of the solution. Therefore, do
not use more than this amount of anticorrosion/ant ifreeze. 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 mi nimum requirements, which are usually satisfied by normal
drinking water. If you are not sure about the water qua lity, consult your authorized Mercedes-Benz dealer.

Anticorrosion/antifreeze
Your vehicle contains a number of aluminum parts. T he 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/antifr eeze 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 c hecked. The coolant is also regularly checked each time you bring your
vehicle to your authorized Merc edes-Benz dealer for service.

Model
Approx.freeze Protection
-35°F
(~37°C)

-49°F
(-45°C)


C 230 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)




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Check Regularly and Before a Long Trip

The engine compartment of model C 230 is illustrated.
1. Fuel Supply
Open flap by pushing near front (arrow). Turn fuel cap
to the left and hold on to it until possible pressure in tank
has been released, then remove cap.
Failure to remove slowly could result in personal injury.

2. Tire Inflation Pressure
Check at least every two weeks.
For details see Index.

3. Coolant Level

See Adding coolant in Index.
4. Windshield Washer System,
Headlamp Cleaning System


For refilling reservoir see Index.
5. Engine Oil Level
See Index.

6. Brake Fluid
See Index.


Vehicle Lighting: Check function and cleanliness.
For replacement of light bulbs, see Index.


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