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
      Instructions for use means of passive safety of the driver and passengers
      Adjustment of seats
      Adjustment of provision of a steering wheel
      System of additional safety (SRS)
      Danger of poisoning with monoxide of carbon (SO)
   + Car equipment, arrangement of devices and governing bodies
   + Comfort
   + 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






Adjustment of seats

Front seats

General information

The seat has to be established in the situation providing to the driver the maximum comfort at management of pedals, a steering wheel and switches on the dashboard. Besides, have to be provided the good review through a windshield and reliability of fixing of a body of the driver with a seat belt.

In a back part of the central console the adjustable folding armrest of front seats, or the armrest combined with a cover of a console ware box is equipped.

Adjustment of seats has to be made prior to the movement.

Application of any additional pillows and other objects enclosed on a pillow or a seatback is not allowed.

Remember that the excessive inclination of a seatback in an essential measure reduces efficiency of functioning of a seat belt!

Mechanical drive of adjustment of seats

Elements of the mechanical drive of adjustment of provision of a front seat

1 — the Lever of adjustment of provision of a seat in the longitudinal direction
2 — the Lever of adjustment of height of provision of a seat in the vertical direction
3 — the Handle of adjustment of an inclination (the extended situation) / deflection depths (the removed situation) of a seat pillow


Elements of the mechanical drive of adjustment of provision of a front seat

4 — the Handle of adjustment of an inclination of a seatback (the removed situation) / provisions of a head restraint (the extended situation)

Elements of the mechanical drive of management of the provision of a seat are located in front under a pillow (the lever of adjustment of provision of a seat in the longitudinal direction) and from the outer side of a pillow/back (adjustment of a pillow, back and head restraint). The description of procedures of removal and installation of forward head restraints is provided in the Section Governing bodies and the equipment of salon.

Pull on yourself the control lever (1) located in front under a seat polushka and shift assembly of a seat in required position. Having finished adjustment, release the lever and make sure of reliability of fixing of a seat, its feats back and forth at the released lever.

Adjustment of provision of a seat in the vertical plane is made by means of the lever (2). Lift the lever up or wring out it down, - the seat will be displaced on one fixed situation in the corresponding direction.
The choice of a tilt angle of a pillow is carried out by rotation of the handle (3) extended outside located from outer lateral face of a seat. Rotation of the handle which is wrung out inside regulates pillow deflection depth.

The inclination of a back is regulated by means of the rotary handle (4) which is wrung out inside built in in an external sidewall of a back. Having extended the same handle outside it is possible to make adjustment of an inclination of a head restraint.

The adjustable central armrest of front seats has five fixed provisions

1 — the Armrest is completely lowered
2 — the Armrest occupies one of three intermediate positions
3 — the Armrest is completely lifted


At the corresponding complete set also the provision of the central armrest of front seats can be adjusted. The armrest has five fixed provisions.

Alternatively instead of an adjustable armrest the folding armrest cover of a console ware box can be established (see the Section Governing bodies and the equipment of salon)

Electric drive of adjustment of seats

The design of the electric drive allows to make flexible adjustments to six parameters of a seat, - use the corresponding section of the switch

A — Adjustment of provision of a seat in the longitudinal and vertical directions
B — Adjustment of a tilt angle of assembly of a seat
With — Adjustment of depth of a deflection of a seat
D — Adjustment of an inclination of a seatback
E — Adjustment of height of a head restraint (the inclination of a head restraint is established manually)


Switches of adjustment of provision of front seats are located on the corresponding doors of the car. Functioning of the electric drive is possible only in provisions 1 and 2 of the lock of ignition, and also in situation 0 at open any of forward doors.

The design of the electric drive allows to make flexible adjustments to six parameters of a seat.

The additional door switch serves for adjustment of a lumbar emphasis of a back of the seat/choice of a configuration of a multicircuit back.

The door regulator of provision of a lumbar emphasis (has 6 fixed provisions (0 ÷ 5)


Regulator of a multicircuit back

1 — Adjustment of a deflection of the lower section of a back
2 — Adjustment of a deflection of average section of a back
3 — Adjustment of a deflection of the top section of a back
4 — Six-position (0 ÷ 5) the deflection regulator
5 — the Keyboard switch of the drive of adjustment of a side emphasis


Besides, the possibility of entering to three chosen sets of parameters is provided in memory of the onboard processor with the subsequent his call.

Entering buttons in a memory/call of parameters of adjustment of seats

F — the Button of the appeal to memory for record
G — Buttons of a record/call of the chosen parameters


For entering of settings of a seat in the processor memory it is necessary to press the button of memory (F), then, with a delay no more than 3 seconds, - any of three action buttons (G).

In parallel with parameters of seats in the processor memory parameters of the unit of a steering column and rear-view mirrors are brought. The call of the parameters brought in the processor memory is made by keeping pressed corresponding from action buttons.

Before a call of adjusting parameters after unfolding of a seat previously bring its back into vertical position.


The combined switch of adjustment of provision of a back seat / a passenger front seat from a back part of salon

1 — the Selector switch of the choice of the seat which is subject to a reguliovka
2 — Adjustment of provision of assembly of a seat in the longitudinal direction
3 — Adjustment of an inclination of a seatback
4 — Adjustment of height of provision of a head restraint


On some models the possibility of adjustment of provision of a passenger front seat from a back part of salon is in addition provided, - the corresponding combined switch is located on the right back door.

Back seats

Many-placed back seat

The description of procedures of removal and installation of a pillow of a back seat is provided in the Section Governing bodies and the equipment of salon.

Functioning of the electric drive is possible only in provisions 1 and 2 of the lock of ignition, and also in situation 0 at open any of forward doors.


The design of the electric drive of a many-placed back seat allows to make only adjustment of an inclination of a back. Switches of management of functioning of the electric drive are located on back doors of the car.

The folding armrest is provided in the central part of a many-placed back seat.

If under an armrest the ware box is equipped, do not forget to close before tilting of an armrest a cover of the last up.

Separate back seats

Switch of adjustment of provision of a back and pillow of a separate back seat

1 — Adjustment of an inclination of a back
2 — Adjustment of an inclination of a pillow


On models with separate back seats the possibility of adjustment of an inclination of a pillow of a seat is in addition provided.

Adjustment of head restraints of back seats from the driver's place

The otpuskaniye button clamps/switch of management of functioning of the electric drive of back head restraints is located on forward section of the central console of the car (see the Section Governing bodies and the equipment of salon).




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