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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz E-Class W123 (from 1976 to 1985, the year of issue)

general info. full specifications. diagnostics. hints. tips. tricks
Mercedes-Benz W123
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Mercedes-Benz
W123
Introduction
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Manual transmission
Automatic Transmission
Driveline and rear axle
The front suspension
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A steering
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Electrical
Design and specifications
Removing and installing the battery
Topping up the electrolyte in the battery
Charging the battery
Technical obsluzhiva?�nie generator and special precautions
Removing and installing the generator
Check the vehicle alternator and voltage regulator
Removal, survey and installation of generator brushes
Removing and installing starter
Repair of starter
Fuses and relays
Windscreen
Schematic diagrams of electrical equipment
Model "250" engine with 123,026
Model "280" engine with 123,030
Models "280E" to the motor 123,033
Models "280E" (engine 123,033, starting with the chassis number 081 279) and the "280SE" (engine 123,053, starting with the chassis number 021 430)
Models "280TE" with the engine 123,093
Models "280TE" with 123,093 engines, starting with the chassis number 007 619
Body and Equipment
 


Hit Counter by Digits


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Models "280TE" with the engine 123,093




Legend schematic circuit diagrams

Number

Designation

1

Left block headlamp:

a

  • beam filament

b

  • beam filament

from

  • lamp Position / parking lights

d

  • light fog lights

e

  • Lamp Indicator

2

Sensor control lamp brake fluid level

3

Contact wear left front brake pads

4

Contact Wear the right front brake pads

5

Device combination:

a

  • indicator lamp left turn indicator

b

  • warning lamp beam headlights

from

  • coolant temperature

d

  • fuel gauge

e

  • fuel reserve warning lamp

f

  • warning lamp battery discharge

g

  • warning lamp for brake pad wear

h

  • control lamp brake fluid level and the parking brake

i

  • lamps lighting devices

j

  • rheostat lighting devices

k

  • alarm buzzer

l

  • Right indicator lamp Indicator

m

  • Digital Watch

6

Cigarette lighter with lamp ashtray

7

Radio*

8

The right block headlamp:

a

  • beam filament

b

  • beam filament

from

  • lamp Position / parking lights

d

  • light fog lights

e

  • Lamp Indicator

9

Switch Mode Launcher Fuel

10

Valve pilot fuel

eleven

Automatic antenna *

12

Switch the parking brake

13

Sensor coolant temperature

14

Contact enable emergency buzzer

15

Front ceiling with switch

16

Switch the ceiling in front of the left front door

17

Switch the ceiling in the front right door

18

A two-tone beep (fanfare)

19

Sensor speed controller software *

20

The control unit software control speed *

21

Actuator speed control software *

22

Electronic switch / relay-breaker alarm

23

The switch of illumination of a ware box

24

Courtesy light glove box

25

Fuse block

26

The heating element management system engine warming

27

The relay of the fuel pump control system of the engine warming up

28

Safety switch threshold torque converter

29

Relay I activate windows *

thirty

Relay II switching windows *

31

A door window switch *

32

Switch software control speed *:

A

  • turned off

V

  • deceleration setting /

SP

  • return to the previous rate of movement

AT

  • acceleration / tuning

33

The combined steering column switch:

a

  • Turn signal switch

b

  • alarm switch headlights

from

  • dimmer switch

d

  • windshield washer switch

e

  • speed switch windscreen wiper

I

  • intermittent operation

II

  • low speed

III

  • high speed

34

Horn switch

35

Windscreen wiper motor

36

Relay intermittent operation of the windscreen wiper

37

Ignition Switch

38

Rotary light switch

39

The electric sunroof *

40

Switch sunroof with electric *

41

The solenoid valve of an automatic transmission *

42

Foot Switch enable low gear *

43

The switch of blocking of a starter and reversing light *

44

C relay II *

45

Relay conditioner I *

46

Switch fan with light

47

Brake light switch

48

Washer pump Windshield

49

Motor cleaner left headlight *

50

Right headlight wiper motor *

51

Relay headlight cleaners *

52

Headlight washer pump *

53

Transistor Ignition Switch

54

Contactless ignition distributor

55

Spark plug

56

Ignition coil

57

Lighting:

a

  • handle air flow direction

b

  • heater control knobs

from

  • switch

58

The switching valve of stabilization of turns of idling *

59

Thermoelectric switch (62 ?� C) desiccant air conditioner *

60

Thermoelectric switch (100 ?� C)

61

Additional fan *

62

Relay additional fan *

63a

Magnetic coupling air conditioner compressor *

63b

The gauge of emergency pressure of the air conditioning compressor * (inclusion at 2.6 kgf / cm 2, off at 2.0 kgf / cm 2)

64

Switch air conditioning temperature selection *

65

Incremental resistance of the fan motor

66

Fan motor

67

0.6 Ohm series resistor

68

Electric window left rear door *

69

Window Switch Left Rear Door *

70

Power Window Switch *:

a

  • window switch left rear door *

b

  • safety switch

from

  • Switch the left front door window

d

  • window switch right front door

e

  • Window Switch Right Rear Door

71

Electric window left front door *

72

0.4 Ohm series resistor

73

Time relays heated rear window *

74

Switch heated rear window *

75

Switch the ceiling in the front right rear door *

76

Switch the ceiling in the front left rear door *

77

Starter

78

Accumulator battery

79

Generator with electronic voltage regulator

80

The electric tailgate glass cleaner

81

Sensor fuel level indicator

82

Fuel pump

83

The wiring harness connector to the rear lights

84

Switch back to the canopy latch

85

TDC sensor

86

Electric window right front door *

87

DLC

88

Window Switch Right Rear Door *

89

Electric window right rear door *

90

Rear ceiling

91

Left tail light:

a

  • Lamp Indicator

b

  • red light / parking light

from

  • light stoplight

92

Rear fog light

93

Washer pump glass tailgate

94

Switch with lock washer motor glass tailgate

95

Bulb license plate light

96

Switch tailgate / tailgate lock

97

Heated rear screen *

98

Lamp lighting scenes shift lever

99

The point of connection with "weight" wiring tailgate

100

Bulb reverse light

101

Right tail light:

a

  • Lamp Indicator

b

  • red light / parking light

from

  • light stoplight

* Depending on the configuration.


Schematic diagram of electrical equipment (1)


Schematic diagram of electrical equipment (2)





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Models "280E" (engine 123,033, starting with the chassis number 081 279) and the "280SE" (engine 123,053, starting with the chassis number 021 430)
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Models "280TE" with 123,093 engines, starting with the chassis number 007 619

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