Mercedes C-Class

W203 since 2000 of release

Repair and car operation



Mercedes-Benz
+ Mercedes-Benz Cars of a class C (W-203)
- Operation manual
   Main bodies and management/control panels
   Locks, keys and locks. Uniform lock
   Protection against theft
   Simplification of landing and disembarkation from the car
   Seats
   Safety systems
   Steering wheel, rear-view mirrors
   Memory of provisions of seats, steering wheel and external mirrors
   Control panel
   Multipurpose steering wheel, universal display
   Switches
   Automatic heater and air conditioner. Ventilation. Independent heater
   Heater of back glass
   Window regulators, roof hatch
   Salon equipment
   Driving and auxiliary systems
   Precautionary alarm and control lamps, and also messages of the information display on the registered malfunctions
   First-aid kit, fire extinguisher, tool, sign of an emergency stop and compartment of a spare wheel. Sealing of punctures of tires
+ Routine maintenance
+ Engine
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment







Automatic heater and air conditioner. Ventilation. Independent heater


The automated system of heating (Heizmatic)

1 — the Control panel
2 — the Adjusting castor of supply of air for the left average deflector
3 — the Turned average deflector, at the left
4 — the Adjusting castor of a primeshivaniye of cold air for average deflectors, lateral deflectors and the ventilating deflector on the dashboard, from above and average deflators in a back part of salon (on models with the automated KV of Thermatic or Thermotronic)
5 — the Turned average deflector, on the right
6 — the Adjusting castor of supply of air for the right average deflector
7 — the Ventilating deflector on the dashboard, from above, with an adjusting castor of supply of air
8 — the Adjusting castor of supply of air for the lateral deflector
9 — the Turned lateral deflector
10 — the Deflector of defrosting of lateral glass

Control panel

1 — the Rotary switch of supply of air
2 — a temperature Regulator for the left side
3 — a temperature Regulator for the right side
4 — the Regulator of distribution of air
5 — Defrosting of glasses
6 — the switching Button on an air circulation mode, a mode of use of residual heat of the engine on as appropriate equipped models
7 — the Heater of back glass (Undressed the Heater of back glass)

The established temperature is reached in a heating mode with the greatest possible speed and supported by a constant. The temperature can be established for each party separately.

Change the established temperature only small steps.

Models with function of use of residual heat of the engine:

When using function «A mode of use of residual heat of the engine» heating of salon of the car can be made also at the switched-off engine.

As a basic provision for regulation of temperature of salon it is recommended establish temperature regulators on 22°С.

General comments on the automated system of heating

The dust removal filter pollen and dust particles to a certain size completely is late.

If the salon is heated up by the sun, it is necessary to air quickly it prior to the beginning of movement.

Do not close ventilating openings in space between a back of a back seat and back glass.

Cuts for an air admission on a cowl hold free from snow.

Manual regulation of distribution of air

Regulation of distribution of air is made at the same time for the left and right parties.

Air outlet above from averages and lateral deflectors, and also from deflectors on the dashboard.

Air outlet from deflectors at a windscreen and from deflectors of defrosting of lateral glasses.

Air outlet from deflectors in space for feet, from averages and lateral deflectors and deflectors in space of feet in a back part of salon.

Basic provision of governing bodies in a mode of heating (winter)

Temperature regulators (2 and 3) establish at will.

Regulator of supply of air establish at will, but not less, than in situation 2, glasses differently can mist over.

Regulator of distribution of air (4) establish, as it is specified above illustrations.

For decrease in temperature in space under a ceiling an adjusting castor of a primeshivaniye of cold air open at will.

Averages and lateral deflectors open at will.

Basic provision of governing bodies in a mode of ventilation (summer)

Temperature regulators (2 and 3) establish at will.

Regulator of supply of air (1) establish at will, but not less, than in situation 1.

Regulator of distribution of air (4) turn on.

Open average deflectors.

Open lateral deflectors.

For the purpose of uniform distribution of air open the ventilating deflector from above on the dashboard.

At such installation good ventilation of salon is provided.

Special provisions - choose only for short time

Switching off and inclusion of the automated system of heating


The rotary switch of supply of air turn on 0.

For the purpose of inclusion of the automated system of heating the rotary switch of supply of air turn in desirable position of the fan.

Defrosting of glasses

Press the button. On the button the control light-emitting diode lights up.

If necessary switch off an air circulation mode. The control light-emitting diode on the button dies away.

Zapotevaniye of glasses from within

If necessary switch off a mode of air circulation (6). The control light-emitting diode on the button dies away.

Regulator of distribution of air (4) turn in situation.

Regulator of supply of air (1) establish on higher step of the fan.

Temperature regulators (2 and 3) establish on more high temperature.

Zapotevaniye of a windscreen outside

Include a screen wiper.

Close the ventilating deflector from above on the dashboard.

Regulator of distribution of air turn in situation or.

Penetration of unpleasant smells outside in salon

Mode of air circulation include only for short time, glasses otherwise can mist over.

Include an air circulation mode: press the button. The control light-emitting diode on the button lights up.

The mode of air circulation is automatically switched off approximately in 5 minutes.

Mode of use of residual heat of the engine

At the switched-off engine heating of salon probably still for some time. Duration of heating depends on the established temperature.

Both regulators of temperature establish at will.

Air distribution via ventilating deflectors establish at will.

Irrespective of the provision of a regulator of supply of air the fan works at a low step.

Before inclusion: a key in the switch of ignition turn in situation 1 or 0 or take out it.

Inclusion of a mode of use of residual heat of the engine

Press the button. On the button the control light-emitting diode lights up.

Inclusion is impossible, if the storage battery is insufficiently charged.

Switching off of a mode of use of residual heat of the engine

Press the button.

The control light-emitting diode does not die away.

Automatic switching off is made:

· if the key in the lock of ignition turns in situation 2,
· approximately in 30 minutes,
· if tension of the storage battery decreases.

The automated conditioner of air (Thermatic)

The arrangement of governing bodies and deflectors is shown on an illustration at the beginning of the Section.

Deflectors in a back part of salon

1 Turned average deflector in a back part of salon, at the left
2 Adjusting castor for average deflectors in a back part of salon
Opening: an adjusting castor turn up.
3 the Turned average deflector in a back part of salon, on the right

The temperature leaving average deflectors in a back part of salon of air corresponds to the air temperature, leaving of average deflectors at the dashboard.

Control panel

1 Rotary switch of supply of air
2 Regulator of temperature for the left side
3 Regulator of temperature for the right side
4 Regulator of distribution of air
5 Heater of back glass (Undressed the Heater of back glass)
6 Economic mode (without cooling), a mode of use of residual heat of the engine
7 Automatic control of distribution of air and productivity of the fan
8 Button of a mode of air circulation
9 Defrosting of glasses

The automated conditioner of air is in operational readiness only at the working engine. If the economic mode is chosen, the system of cooling does not work.

In automatic a mode the automated conditioner of air makes cooling or heating depending on temperature of external air and the demanded temperature in car salon. At the switched-off function of an automatic mode giving and distribution of air can be regulated also manually.

When using function «A mode of use of residual heat of the engine» heating of salon of the car can be made also at the switched-off engine.

The temperature can be established for each party separately. Change the established temperature only small steps.

General comments on the automated conditioner of air

The dust removal filter pollen and dust particles to a certain size completely is late.

If the salon is heated up by the sun, it is necessary to air quickly it prior to the beginning of movement.

In a ware compartment between forward seats air conditioning in a compartment on the average console under the console armrest - see below in this Section) can be made.

Do not close ventilating openings in space between a back of a back seat and back glass.

Cuts for an air admission on a cowl hold free from snow.

On the bottom of the car condensate can be formed.

At leakage of a coolant the conditioner compressor for protection against damage is automatically switched off.

The cooling system any more does not work. The economic mode does not give in to shutdown. In this case address on one of HUNDRED "Mercedes-Benzs" for check of the automated conditioner of air.

Basic provision of governing bodies in an automatic mode

Press the button. Giving and distribution of air are regulated automatically.

As a basic provision for regulation of temperature of salon establish temperature regulators on 22°С. To change the established temperature follows small steps.

Heating mode

For decrease in temperature in space under a ceiling an adjusting castor of a primeshivaniye of cold air open at will.

Cooling mode

For the purpose of uniform distribution of air open the ventilating deflector from above on the dashboard.

Special provisions - choose only for short time

Switching off and turning on of the automated conditioner of air

The rotary switch of supply of air turn on 0. The automated conditioner of air it is switched off.

For the purpose of turning on of the automated conditioner of air the rotary switch of supply of air turn in desirable position of the fan.

Manual regulation of giving and air distribution

Press the button. The control light-emitting diode on the button dies away.

6 steps of the fan and distribution of air can get out manually.

Return to an automatic mode:

Press the button. On the button the control light-emitting diode lights up.

Manual regulation of distribution of air:

Regulation of distribution of air is made at the same time for the left and right parties.

Air outlet above from averages and lateral deflectors, and also from deflectors on the dashboard.

Air outlet from deflectors at a windscreen and from deflectors of defrosting of lateral glasses.

Air outlet from deflectors in space for feet, from averages and lateral deflectors and deflectors in space for feet in a back part of salon.

Defrosting of glasses

Zapotevaniye of glasses from within

Press the button. On the button the control light-emitting diode lights up.

Switch off an air circulation mode. The control light-emitting diode on the button dies away.

Zapotevaniye of a windscreen outside

Include a screen wiper.

Close the ventilating deflector from above on the dashboard.

Manual mode: a regulator of distribution of air turn in situation or.

Air circulation mode

Include an air circulation mode:

The control light-emitting diode on the button does not burn.

Slightly press the button. On the button the control light-emitting diode lights up.

Switching off of a mode of air circulation:

The control light-emitting diode on the button burns. Slightly press the button. The control light-emitting diode on the button dies away.

Inclusion of a mode of air circulation and activation of comfortable closing:

The control light-emitting diode on the button does not burn. The button press and hold pressed more long than 2nd seconds, lateral windows rise. On the button the control light-emitting diode lights up.

Switching off of a mode of air circulation and activation of comfortable opening:

The control light-emitting diode on the button burns. The button press and hold pressed more long than 2nd seconds, lateral windows occupy that situation in which they were before closing.

If after comfortable closing lowering of one of glasses or opening of the glass panel of a roof was manually made, at comfortable opening it does not come back to situation in which it was before closing.

Switching of a mode of air circulation on a mode of supply of external air is made automatically:

· in 30 minutes at temperature of external air is higher approximately 5°С,
· in 5 minutes at temperature of external air is lower approximately 5°С,
· in 5 minutes if the economic mode was chosen.

At high temperatures of external air there is an automatic switching on an air circulation mode. Approximately in 30 minutes the podmeshivaniye of external air begins.

Economic mode

Inclusion of an economic mode:

Press the button.

The control light-emitting diode on the button lights up.

The system of cooling does not work, and drainage of air is not made.

By repeated pressing of the button the mode chosen before again joins.

Mode of use of residual heat of the engine

At the switched-off engine heating of salon probably still for some time. Duration of heating depends on the established temperature.

Both regulators of temperature establish at will.

Air distribution via ventilating deflectors establish at will.

Irrespective of the provision of a regulator of supply of air the fan works at a low step.

Before inclusion: a key in the switch of ignition turn in situation 1 or 0 or take out it.

Inclusion of a mode of use of residual heat of the engine: press the button. On the button the control light-emitting diode lights up.

Inclusion is impossible, if the storage battery is insufficiently charged.

Switching off of a mode of use of residual heat of the engine:

Press the button.

The control light-emitting diode on the button dies away.

Automatic switching off is made:

· if the key in the lock of ignition is turned in situation 2,
· approximately in 30 minutes,
· if tension of the storage battery decreases.

The automated conditioner of air with comfortable management (Thermotronic)

The arrangement of governing bodies and deflectors is shown on an illustration at the beginning of the section. Deflectors in a back part of salon are located similar to models with Thermatic (see above).

Display and keyboard

1 Temperature on the left side, decrease
2 Temperature on the left side, increase
3 Distribution of air on the left side (automatically, manually)
4 Filter with absorbent carbon
5 Display
6 Distribution of air on the right side (automatically, manually)
7 Temperature on the right side, increase
8 Temperature on the right side, decrease
9 Heater of back glass (Undressed the Heater of back glass)
10 Economic mode (without cooling), a mode of use of residual heat of the engine
11 Keyboard switch of supply of air «+»
Turning on of the automated conditioner of air with comfortable management
12 Keyboard switch of supply of air -
Switching off of the automated conditioner of air with comfortable management
13 Button of a mode of air circulation
14 Defrosting of glasses

Indication on the display

1 Temperature on the left side
2 Temperature on the right side
3 Steps of the fan
4 the AUTO function (an automatic mode) Is included

The automated conditioner of air with comfortable management is in a ready state only at the started engine.

In an economic mode, coolings do not occur.

In an automatic mode the automatic conditioner of air makes cooling or heating depending on intensity of the sun, temperatures of external air and the demanded temperature in car salon. When using function «A mode of use of residual heat of the engine» heating or ventilation of salon of the car can be made also at the switched-off engine.

To change the established temperature follows only small stages. The automatic conditioner of air can be established for the left and right parties separately.

The established temperature is reached with the greatest possible speed and supported by a constant.

General recommendations about the automatic conditioner of air

Оратитесь to the corresponding subsection relating to KV of Thermatic is higher in this Section.

Basic provision of governing bodies — in an automatic mode

Press both handles. Symbols, also are not shined any more.

Functions of an economic mode of EU and mode of air circulation are switched off. The automatic mode of the fan is at the same time activated.

As a basic provision for regulation of temperature of salon we recommend to establish temperature indications on the display on 22°С. To change the established temperature follows only small steps.

Heating mode

For decrease in temperature in space under a ceiling an adjusting castor of a primeshivaniye of cold air open at will.

Cooling mode

For the purpose of uniform distribution of air open the ventilating deflector from above on the dashboard.

Special provisions — choose only for short time

Switching off and turning on of the automated conditioner of air with comfortable management

The keyboard switch of supply of air at the left press until indication on the display will go out.

For the purpose of turning on of the automated conditioner of air with comfortable management the keyboard switch of supply of air press on the right.

Manual regulation of supply of air

7 steps of the fan can be chosen.

The keyboard switch of supply of air on the right or at the left press several times until the necessary step of the fan will be established. Steps of the fan are displayed on the display.

«AUTO» indication on the display dies away and the automatic mode of the fan is switched off.

For the purpose of inclusion of an automatic mode of the fan press the left or right handle of distribution of air.

Manual regulation of distribution of air

Press the handle. The handle is put forward, symbols are visible, and. The handle turn according to demanded distribution of air.

Air outlet from averages and lateral deflectors, deflectors on doors and at a windscreen.

Air outlet from average and lateral, deflectors on doors and at a windscreen.

Air outlet from averages and lateral deflectors, deflectors on doors and in space for feet.

Return to an automatic mode: Press and fix the handle. Symbols, also are not visible any more.

Defrosting of glasses

Zapotevaniye of glasses from within


Press the button. On the button the control light-emitting diode lights up.

If necessary switch off an air circulation mode. The control light-emitting diode on the button dies away.

Zapotevaniye of a windscreen outside

Include a screen wiper.

Close the ventilating deflector from above on the dashboard.

Manual mode:

Regulator of distribution of air turn in situation or.

Air circulation mode

Include an air circulation mode:

The control light-emitting diode on the button does not burn.

Quickly press the button. On the button the control light-emitting diode lights up.

Switching off of a mode of air circulation:

On the button the control light-emitting diode lights up.

Quickly press the button. The control light-emitting diode on the button dies away.

Inclusion of a mode of air circulation and activation of comfortable closing:

The control light-emitting diode on the button does not burn.

The button press and hold more than 2 seconds, lateral glasses and the shifted and lifted top hatch are closed. On the button the control light-emitting diode lights up.

Switching off of a mode of air circulation and activation of comfortable opening:

On the button the control light-emitting diode burns. The button press more than 2 seconds, lateral glasses and the shifted and lifted top hatch move to situation in which they were before closing.

If after comfortable closing the window was manually lowered or the shifted and lifted top hatch is open, at comfortable opening situation in which they were before closing is not reached.

Switching of a mode of air circulation on a mode of supply of external air is made automatically:

· in 30 minutes at temperature of external air is higher approximately 5°С,
· in 5 minutes at temperature of external air is lower approximately 5°С,
· in 5 minutes if the economic mode was chosen.

At high temperatures of external air there is an automatic switching on an air circulation mode. Approximately in 30 minutes the podmeshivaniye of external air begins.

Economic mode

Inclusion of an economic mode


Press the button.

The control light-emitting diode on the button lights up.

The system of cooling does not work, and drainage of air is not made.

By repeated pressing of the button the mode chosen before again joins.

The filter with absorbent carbon and the automatic air circulation, considering pollution of external air

The filter essentially reduces concentration of harmful substances and considerably detains smells.

Automatic switching on a mode of air circulation is made, if in external air concentration of an oxide of carbon (WITH) or nitrogen (NOH) oxides raised.

The mode of automatic air circulation is impossible, if the economic mode or temperature of external air is chosen is lower 5°С.

Turning on of the coal air filter and air circulation, taking into account pollution of external air by the fulfilled gases:

The control light-emitting diode on the button does not burn. Quickly press the button. On the button the control light-emitting diode lights up.

Switching off of the coal filter of air circulation, taking into account pollution of external air by the fulfilled gases:

On the button the control light-emitting diode lights up.

Quickly press the button. The control light-emitting diode on the button dies away.

Turning on of the coal filter and automatic air circulation and activation of comfortable closing:

The control light-emitting diode on the button does not burn. The button press more than 2 seconds, lateral glasses and the shifted and lifted top hatch are closed. On the button the control light-emitting diode lights up.

Switching off of the coal filter and activation of comfortable opening:

On the button the control light-emitting diode burns. The button press more than 2 seconds, lateral glasses and the shifted and lifted top hatch move to situation in which they were before closing.

If after comfortable closing the window was manually lowered or the shifted and lifted top hatch is open, at comfortable opening more situation in which they were before closing is not reached.

Mode of use of residual heat of the engine

Address to the corresponding subsection relating to KV of Thermatic is higher in this Section.

Compartment with air conditioning on the average console under an armrest
(models with the automated conditioner of air)

In a compartment there is a ventilating deflector.

Opening: the handle (1) shift up.

Closing: the handle (1) shift down.

Supply of air depends:

· from the established distribution of air,
· from the established giving of air,
· from the provision of opening of ventilating deflectors on the dashboard.

Air temperature approximately corresponds to the air temperature, leaving of average deflectors. It cannot be established separately.

In a compartment there can be extremely high temperatures caused by limited space. Therefore at transportation of heatsensitive cargo it is necessary to close the ventilating deflector of the included heating.

The ventilating deflector in a compartment do not close subjects.

Independent heater

The independent heater makes heating or ventilation of salon of the car depending on the air of value established on the automatic conditioner and air temperatures in salon.

The device of remote control can caused all functions of an independent heater. It is possible to include an independent heater at once (immediate heating) or to program so that it automatically joined in demanded time (program heating).

By the switch on the average console the independent heater can join and be switched off and be dumped activated time of inclusion.

The independent heater joins

only at temperature of cooling liquid is lower 70°С.

At the corresponding temperature and weather conditions can happen that the system, for example, at first makes ventilation, and then — heating. It provides possibility of achievement of the demanded temperature with the greatest possible speed.

For achievement of the maximum radius of operation of the device of remote control the aerial during transfer is recommended to be put forward completely, and the device of remote control hold vertically. Transfer is made until on the display indication blinks.


The maximum radius of operation of the device of remote control makes 1000 m. From the closed rooms or owing to massive obstacles the radius of action can be limited.

Operating time of an independent heater established at manufacturer makes 50 minutes. However it can be established and individually. The reference any Mercedes-Benz station on this matter will give.

The device of remote control can be stored by an independent heater in a ware compartment, in front of the selector lever, in the holder.

The car is equipped with the device of remote control. For each car one additional device of remote control of the same execution is provided. The reference any Mercedes-Benz station on this matter will give.

The switch of an independent heater is on the average console.

Left – red - the light-emitting diode displays the included condition of a heater.

The right – yellow - displays a condition of activization of a choice of time of inclusion of a heater

1 Aerial
2 Control light-emitting diode
3 ON - Incl.
4 OFF - Off.

Before inclusion

Establish the demanded temperature for salon (see above in this Section). The recommended temperature at the left and on the right - 22°С.

The independent heater automatically establishes the chosen temperature.

Immediate inclusion

Inclusion of an independent heater by means of the switch

Press the switch a symbol. The red control light-emitting diode lights up.

Inclusion of an independent heater by the device of remote control

The ON button on the device of remote control press until the green control light-emitting diode on the device of remote control will light up. On models with the automated conditioner of air with comfortable management the display on the control panel is activated.

At inclusion of an independent heater the red control light-emitting diode on the switch on the average console lights up.

Switching off

The independent heater can be switched off by the device of remote control or the switch on the average console.

Switching off by means of the switch:

The switch on the average console press a symbol. The red control light-emitting diode dies away.

Switching off by the device of remote control:

The OFF button on the device of remote control press until the red control light-emitting diode will light up. The red control light-emitting diode on the switch on the average console also dies away.

Activation of function of preset

By means of the universal display of an independent heater three values of time of the inclusion can be set, one of them can be activated respectively as inclusion time.

At the activated function of preset the yellow light-emitting diode on the switch burns. At the activated independent heater the yellow light-emitting diode on the switch dies away, and the red light-emitting diode on the switch burns.

(Installation of time of inclusion - see. Section Multipurpose steering wheel, universal display).

(A call of time of inclusion - see. Section Multipurpose steering wheel, universal display)

(Activation of function of preset is considered in the Section the Multipurpose steering wheel, the universal display).

Switching off of function of preset

Function of preset can be switched off by means of the switch (see above).

In 50 minutes of work of heating/ventilation the independent heater is automatically switched off. The control light-emitting diode dies away.

Replacement of elements of a food

1 Cover
2 Elements of a food

Cover-1-remove down with overcoming of provision of fixing.

Take out an old element of a food.

New element of a food-2-insert according to markings of poles + and - poured out on the case of the device of remote control.

Pull a cover from below.