Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car



Mercedes S-Class
+ Mercedes-Benz cars of the class S (W-140)
- Operation manual
   Specifications
   + Access, protection
   + Elements of security systems
   + Car equipment, arrangement of devices and governing bodies
   - Comfort
      Independent heater
   + Methods of operation and auxiliary systems
+ Routine maintenance
+ Engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Gear shifting box
+ Automatic transmission
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment






Independent heater

It is not allowed to activate an independent heater in territories of gas station and in the enclosed space which is not equipped with compulsory ventilation.

The programmable petrol independent heater of salon is included in a basic equipment of all models besides the automated air conditioning system. The control panel of functioning of a heater with the built-in information display is located in the right top corner of vertical section of the central console.

Control panel of functioning of an independent heater of salon

1 — the Control light-emitting diode of the mode of preliminary installations (yellow)
2 — the Control light-emitting diode of activation of a heater (green)
3 — the Information display

The button allows to program up to three inclusions of a heater.

By means of the button the entrance to the mode of installation of the current time, day of the week and time of inclusion of a heater is made.

Updating of data in the mode of installation is made by buttons and (forward/back).

For immediate activation of a heater the button serves.

Before inclusion of a heater follows by means of buttons or on the control panel of air conditioning system to expose value of temperature up to which air in salon has to be heated-up.

For immediate activation of a heater press control panels the button, - the control light-emitting diode of green color which is built in the panel has to light up. Activation of a heater happens about 30 seconds later or at temperature drop of cooling liquid to value below of 70 °C. the maximum duration of functioning of the device makes 60 minutes. Shutdown of a heater can be made by repeated pressing of the button, - the light-emitting diode has to go out.

Installation of the current time

The entrance to the mode of installation of the current time is made by keeping of the pressed button, - on the screen of the display indications of hours begin to blink. Updating of indications is made by means of buttons and.



Simultaneous pressing of buttons allows to translate indications of hours with a step 1 minute.


Approximately in three seconds of the display in the flashing mode designation of day of the week is displayed, - installation is made by means of the same buttons (i).



For installation of day of the week it is necessary to translate previously the indication of hours at least to one minute.

Installation of the moment of inclusion of a heater

The design of the device allows to program up to three inclusions of a heater with a possibility of the choice then any of three installations.

For an entrance to the mode of installation press the button P heater control panels one, two or three times (the first, second and third inclusion respectively), - on the control panel will light up a control light-emitting diode of yellow color, and the last entered indication will be displayed, for example:

Figure 1 in the left top corner of the display designates number of programmable inclusion (a call on single pressing of the button P).

Updating of indications is made by means of buttons and.

At first correction of value of time of inclusion is made, - simultaneous pressing of buttons allows to change indications with a step 1 minute. Then, - day of the week. As soon as designation of day of the week begins to blink, press one of adjusting buttons (or) and hold it pressed within about 3 seconds. In case of need day of the week can not be set, - choose designation in the form of two dash(es).

In 20 seconds after the end of installation indication of time and day on the display will go out. The turn of the programme of the last installation remains highlighted in the left top corner of the screen. Also yellow control light-emitting diode of the mode of preselection will continue to burn.

For an exit from the preselection mode (refusal of the programmed inclusion of a heater) press the button P until from the screen of the display number of program input does not disappear and the yellow control light-emitting diode will not go out.

Activation of any of the installations entered into memory of the device on the set inclusion of a heater is made also by means of the button P, - in the left top corner of the screen has to the turn of the programme, and also (for 20 seconds) - the entered data will be highlighted.

If day of the week was not set, the left bottom corner of the screen will remain blank, for example:

At such installation activation of a heater will be daily made at 20:45.

Switching off of a heater is made

If on the control panel the green control light-emitting diode burns, it is necessary to press the button if yellow, - the button P (press until from the screen the turn of the programme does not disappear and the diode will not go out).

Browse mode of the chosen installations

Press and hold pressed the button, - the display the indication of the current time of day and day of the week will be displayed, for example:

Release the button, - approximately in 3 seconds the indication of the activated preselection mode will be displayed, for example:

In this case activation of a heater will be made according to installation of the first programmed inclusion every Saturday, at 5:30 in the morning.

At last, from the screen all data, except number of the activated program inclusion of a heater will disappear:

Remote control of an independent heater

DU panel of an independent heater


1 — the Button of activation of the transmitter
2 — the Control light-emitting diode
3 — the Antenna

The remote control (DU) is included in the package of a heater.

The panel allows to activate an independent heater from distance to 1000 meters.

When giving a signal from the enclosed space range of operation of the transmitter can be reduced.

You hold the DU panel the antenna up. Press the transmitter button, - the control light-emitting diode has to light up. Release the button, - the diode will go out about 6 seconds during which the panel should continue to be held the antenna up later.

Activation of an independent heater will happen approximately in 30 seconds or when temperature of cooling liquid falls below 70 °C. The maximum duration of continuous functioning of a heater makes 60 minutes.

Functioning of a heater can be suspended from interior of the car by pressing the button, - the green control light-emitting diode on the control panel has to go out.

If at a nazhimaniye on the button of the transmitter there is no operation of a control light-emitting diode, follows will replace a panel battery.

Replacement of a battery of the DU panel

Replacement of a battery of the DU panel of an independent heater


1 — the Movable cover
2 — Polarity of installation of an element

Shift an access cover from the lower party of the DU panel, take a battery and establish on its place new, - track for respect for polarity.

Establish into place a cover.

Utilization of the used battery has to be made with observance of requirements of norms on environmental protection!

General comments by instructions for use an independent heater

For the purpose of economy of a charge of the rechargeable battery avoid unreasonable inclusions of a heater, especially following one after another through short time. Disconnect a heater as soon as the salon enough gets warm.

It must be kept in mind that at inclusion of a heater at the ignition key taken from the lock or turned in situation 1 or 0 activation of the K/V fan happens only after cooling liquid is heated-up up to the certain temperature.

When giving food after shutdown of onboard food indications of day of the week and time of day which should be modified first of all are output to the display screen in the flashing mode. Further in memory of the device installations of programmable inclusions of a heater can be brought.

Spontaneous shutdown of a green control light-emitting diode demonstrates malfunction existence, - in parallel on the screen of the display F letter is highlighted, - ask for the help on Mercedes-Benz car repair shop.