1999 MERCEDES-BENZ C-CLASS ECU

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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Fuses




1. Main fuse box in engine compartment

2. Auxiliary fuse box in trunk
3. Auxiliary fuse in trunk
4. Auxiliary fuse in engine compartment

Before replacing a blown fuse, determine the cause of the short circuit. Spare fuses are supplied inside the
main fuse box. Observe amperage and color of fuse. To gai n access to the main fuse box, release clamp (1),
lift the fuse box cover up and remove it. A special fuse puller comes with the vehicle tools. Always use a
new fuse for replacement. Never attempt to repair or bridge a blown fuse. After replacing a blown fuse, close
fuse box cover. To close the main fuse box, engag e cover at the rear and secure with clamp.


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All except C 43 AMG

C 43 AMG



Towing the Vehicle

The rear towing eye is located at the right, below the bumper.
The front towing eye is located on the passenger side behind a cover in the bumper panel.

Models C 230 and C 280:
Cover removal:
Insert finger in recess on left end of cover and pull cover out.
Cover installation:
Engage cover at top right and press cover in securely
.

Model C 43 AMG:
Cover removal:
Hold left and right end of grille and pull out.
Cover installation:
Engage cover at bottom and press in top securely.
We recommend that the vehicle be transported using flat bed equipment. This method is preferable to other
types of towing. The vehicle may be towed with all wheel s on the ground and the selector lever in position "N"
for distances up to 30 miles (50 km) and at a speed not to exceed 30 mph (50 km/h). The electronic key must
be in steering lock position 2. To positively avoid a possibility of damage to the transmission, however, we
recommend to disconnect the drive shaft at the rear axle drive flange on any towing beyond a short tow to a nearby
garage. Do not tow with sling-type equipment. Towing with sling-type equipment over bumpy roads will damage
radiator and supports. Use wheel lift, dolly, or flat bed equipment, with electronic key in steering lock turned to
position 0.


Warning !
With the engine not running, there is no power assistance for the braking and steering systems, in this case,
it is important to keep in mind that a considerably higher degree of effort is necessary to brake and steer
the vehicle.

Note:
To signal turns while being towed with hazard warning flas her in use, turn electronic key in steering lock to
position 2 and activate combination switch for left or right turn signal in usual manner - only the selected turn
signal will operate. Upon cancelling the turn signal, the hazard warning flasher will operate again.

Caution !
Vehicles with Acceleration Slip Regulation (ASR)
If the vehicle is towed with the front axle raised, the engi ne must be shut off (electronic key in steering lock position
0 or 1). Otherwise, the ASR will immediately be engaged and will apply the rear wheel brakes.


Caution !
Vehicles with Electronic Stability System (ESP)
If the vehicle is towed with the front axle raised, 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.


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Rear Seat Cushion

Removal:
Push in locking tabs (on left and right side of seat) and pull up seat at the front. Installation: Slide rear edge of
cushion under the backrest. Push front of cushion down until it locks in place.

Caution!
Watch out for sharp edges when removing or installing the rear seat cushion, and make sure that it is securely
locked in place again, to prevent personal injury.




Emergency Operation of Sliding/Pop-Up Roof

The sliding/pop-up roof can be opened or closed manually should an electrical malfunction occur.
The sliding/pop-up roof drive is located behind the le ns of the left interior lamp between the sun visors.
1. Pry off lens (1) by using a screw driver.
2. Obtain crank (2) (supplied with vehicle) and insert it through hole.

To slide the roof closed or to raise the roof at the rear: turn crank clockwise.
To slide the roof open or to lower the roof at the rear: turn crank counterclockwise.


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