Mercedes C-Class

W203 since 2000 of release

Repair and operation of the car



Mercedes-Benz
+ Mercedes-Benz cars of class C (W-203)
- Operation manual
   Main bodies and panels of management/control
   Locks, keys and locks. Uniform lock
   Protection against theft
   Simplification of landing and disembarkation from the car
   Seats
   Systems of safety
   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 conditioner of air. Ventilation. Independent heater
   Heater of back glass
   Window regulators, roof hatch
   Equipment of salon
   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 system and heating
+ 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 conditioner of air. Ventilation. Independent heater


The automated system of heating (Heizmatic)

1 — the Control panel
2 — the Adjusting castor of air supply for the left average deflector
3 — the Turned average deflector, at the left
4 — the Adjusting castor of an adulteration of cold air for average deflectors, side 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 air supply for the right average deflector
7 — the Ventilating deflector on the dashboard, from above, with an adjusting castor of air supply
8 — the Adjusting castor of air supply for the side deflector
9 — the Turned side deflector
10 — the Deflector of defrosting of side glass

Control panel

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

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

Change the established temperature only small steps.

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

When using the "Mode of Use of Residual Heat of the Engine" function heating of interior of the car can be also made at the switched-off engine.

As a basic position for regulation of temperature of salon we recommend install temperature regulators on 22 °C.

General comments on the automated system of heating

The dust removal filter pollen and particles of dust up to the certain size completely is late.

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

Do not close air vents in space between a back of a back seat and back glass.

You hold cuts for an air admission on a cowl 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 average and side deflectors, and also from deflectors on the dashboard.

Air outlet from deflectors at a windshield and from deflectors of defrosting of side glasses.

Air outlet from deflectors in space for legs, from average and side deflectors and deflectors in space of legs in a back part of salon.

Basic position of governing bodies in the heating mode (winter)

Install regulators of temperature (2 and 3) at will.

Install the regulator of air supply at will, but not less, than in situation 2, differently glasses can mist over.

Install the regulator of distribution of air (4) how it is stated above on an illustration.

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

Open average and side deflectors at will.

Basic position of governing bodies in the ventilation mode (summer)

Install regulators of temperature (2 and 3) at will.

Install the regulator of air supply (1) at will, but not less, than in situation 1.

Turn the regulator of distribution of air (4) on.

Open average deflectors.

Open side 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


Turn the rotary switch of air supply on 0.

For the purpose of inclusion of the automated system of heating turn the rotary switch of air supply 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 the air circulation mode. The control light-emitting diode on the button dies away.

Fogging of glasses from within

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

Turn the regulator of distribution of air (4) in situation.

Install the regulator of air supply (1) on higher step of the fan.

Install regulators of temperature (2 and 3) on more high temperature.

Fogging of a windshield outside

Include a screen wiper.

Close the ventilating deflector from above on the dashboard.

Turn the regulator of distribution of air in situation or.

Penetration of unpleasant smells outside in salon

Include the mode of air circulation only for short time, otherwise glasses can mist over.

Include the 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 perhaps still for some time. Duration of heating depends on the established temperature.

Install both regulators of temperature at will.

Establish distribution of air via ventilating deflectors at will.

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

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

Inclusion of the 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 rechargeable battery is insufficiently charged.

Switching off of the 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 rechargeable 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 The turned average deflector in a back part of salon, at the left
2 An adjusting castor for average deflectors in a back part of salon
Opening: turn an adjusting castor up.
3 The turned average deflector in a back part of salon, on the right

Temperature of the salon of air which is going out of average deflectors in a back part corresponds to air temperature, going out of average deflectors at the dashboard.

Control panel

1 Rotary switch of air supply
2 Temperature regulator for the left side
3 Temperature regulator for the right side
4 Air distribution regulator
5 Heater of back glass (Section Heater of Back Glass)
6 Economy mode (without cooling), the mode of use of residual heat of the engine
7 Automatic control of distribution of air and productivity of the fan
8 Air circulation mode button
9 Defrosting of glasses

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

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

When using the "Mode of Use of Residual Heat of the Engine" function heating of interior of the car can be also made at the switched-off engine.

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

General comments on the automated air conditioner

The dust removal filter pollen and particles of dust up to the certain size completely is late.

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

In a ware compartment between front 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 air vents in space between a back of a back seat and back glass.

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

On the bottom of the car condensate can be formed.

At coolant leak the conditioner compressor for protection against damage is automatically switched off.

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

Basic position of governing bodies in the automatic mode

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

As a basic position for regulation of temperature of salon install temperature regulators on 22 °C. It is necessary to change the established temperature small steps.

Heating mode

For decrease in temperature in space under a ceiling open an adjusting castor of an adulteration of cold air 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 air conditioner

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

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

Manual regulation of giving and distribution of air

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

6 steps of the fan and distribution of air can be chosen manually.

Return to the 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 average and side deflectors, and also from deflectors on the dashboard.

Air outlet from deflectors at a windshield and from deflectors of defrosting of side glasses.

Air outlet from deflectors in space for legs, from average and side deflectors and deflectors in space for legs in a back part of salon.

Defrosting of glasses

Fogging of glasses from within

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

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

Fogging of a windshield outside

Include a screen wiper.

Close the ventilating deflector from above on the dashboard.

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

Air circulation mode

Include the 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 the 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 the mode of air circulation and activation of comfortable closing:

The control light-emitting diode on the button does not burn. Press the button and hold pressed longer than 2 seconds, side windows rise. On the button the control light-emitting diode lights up.

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

The control light-emitting diode on the button burns. Press the button and hold pressed longer than 2 seconds, side windows hold that position 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, then at comfortable opening it does not come back to situation in which it was before closing.

Switching of the mode of air circulation to the mode of supply of external air is made automatically:

· in 30 minutes at a temperature of external air about 5 °C are above,
· in 5 minutes at a temperature of external air about 5 °C are below,
· in 5 minutes if economy mode was chosen.

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

Economy mode

Inclusion of economy mode:

Press the button.

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

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

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

Mode of use of residual heat of the engine

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

Install both regulators of temperature at will.

Establish distribution of air via ventilating deflectors at will.

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

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

Inclusion of the 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 rechargeable battery is insufficiently charged.

Switching off of the 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 rechargeable battery decreases.

The automated air conditioner 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 The 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 (Section Heater of Back Glass)
10 Economy mode (without cooling), the mode of use of residual heat of the engine
11 Keyboard switch of air supply "+"
Turning on of the automated air conditioner with comfortable management
12 The keyboard switch of air supply -
Switching off of the automated air conditioner with comfortable management
13 Air circulation mode button
14 Defrosting of glasses

Indication on the display

1 Temperature on the left side
2 Temperature on the right side
3 Fan steps
4 The AUTO function (the automatic mode) is included

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

In economy mode, cooling does not happen.

In the automatic mode the automatic conditioner of air makes cooling or heating depending on intensity of the sun, temperature of external air and the required temperature in interior of the car. When using the "Mode of Use of Residual Heat of the Engine" function heating or ventilation of interior of the car can be also made at the switched-off engine.

It is necessary to change the established temperature only small stages. The automatic conditioner of air can be installed 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

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

Basic position of governing bodies — in the automatic mode

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

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

As a basic position for regulation of temperature of salon we recommend to establish indications of temperature on the display on 22 °C. It is necessary to change the established temperature only small steps.

Heating mode

For decrease in temperature in space under a ceiling open an adjusting castor of an adulteration of cold air 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 air conditioner with comfortable management

At the left press the keyboard switch of air supply until indication on the display goes out.

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

Manual regulation of air supply

7 steps of the fan can be chosen.

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

Indication of "AUTO" on the display dies away and the automatic mode of the fan is switched off.

For the purpose of inclusion of the 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 starts, symbols are visible, and. Turn the handle according to the required air distribution.

Air outlet from average and side deflectors, deflectors on doors and at a windshield.

Air outlet from average and side, deflectors on doors and at a windshield.

Air outlet from average and side deflectors, deflectors on doors and in space for legs.

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

Defrosting of glasses

Fogging of glasses from within


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

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

Fogging of a windshield outside

Include a screen wiper.

Close the ventilating deflector from above on the dashboard.

Manual mode:

Turn the regulator of distribution of air in situation or.

Air circulation mode

Include the 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 the 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 the mode of air circulation and activation of comfortable closing:

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

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

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

On the button the control light-emitting diode burns. Press the button more than 2 seconds, side 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, then at comfortable opening situation in which they were before closing is not reached.

Switching of the mode of air circulation to the mode of supply of external air is made automatically:

· in 30 minutes at a temperature of external air about 5 °C are above,
· in 5 minutes at a temperature of external air about 5 °C are below,
· in 5 minutes if economy mode was chosen.

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

Economy mode

Inclusion of economy mode


Press the button.

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

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

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

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

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

Automatic switching to the mode of air circulation is made if in external air concentration of carbon monoxide (SO) or an oxide of nitrogen (NOh) increased.

The mode of automatic air circulation is impossible if economy mode or temperature of external air is chosen 5 °C are below.

Turning on of the coal air filter and air circulation, taking into account pollution of external air 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 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. Press the button more than 2 seconds, side 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. Press the button more than 2 seconds, side 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, then at comfortable opening more situation in which they were before closing is not reached.

Mode of use of residual heat of the engine

Address 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 air conditioner)

In a compartment there is a ventilating deflector.

Opening: shift the handle (1) up.

Closing: shift the handle (1) down.

Air supply depends:

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

Air temperature approximately corresponds to air temperature, going out of average deflectors. It cannot be installed separately.

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

Do not close the ventilating deflector in a compartment objects.

Independent heater

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

The device of remote control can cause 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 the required time (program heating).

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

The independent heater joins

only at temperature of cooling liquid below 70 °C.

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

For achievement of the maximum radius of operation of the device of remote control the antenna during transfer is recommended to be put forward completely, and you hold the device of remote control 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 enclosed space or owing to massive obstacles the radius of action can be limited.

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

The device of remote control of an independent heater can be stored 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. Any Mercedes-Benz station on this matter will give the reference.

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

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

Right – yellow - displays a condition of activization of the choice of time of inclusion of a heater

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

Before inclusion

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

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 device of remote control

Press the ON button on the device of remote control until the green control light-emitting diode on the device of remote control lights up. On models with the automated air conditioner 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:

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

Switching off by the device of remote control:

Press the OFF button on the device of remote control until the red control light-emitting diode lights 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 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 the Section the Multipurpose steering wheel, the universal display).

(An inclusion time call - see the Section the Multipurpose steering wheel, the 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 batteries

1 Cover
2 Batteries

-1-uncover with overcoming provision of fixing down.

Take out an old battery.

Insert a new battery-2-according to markings of poles + and - poured out on the case of the device of remote control.

Pull a cover from below.