BMW 5 series E39

Since 1996-2001 of release

Repair and car operation

+ Introduction
+ The maintenance instruction
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ The power supply system and release
- Engine electric equipment
   + Ignition system
   + System of preheat of the diesel engine
   + Charge and start systems
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes
+ System of onboard diagnostics

Engine electric equipment

The general information

The structure of an electric equipment of the engine includes all components of systems of ignition, start and a charge. In a kind of that on the functional purpose these components concern to directly ensuring functioning of the engine, they are considered separately from components of an onboard electric equipment, such as lighting devices, monitors, etc.

At work with an electric equipment always it is necessary to observe certain security measures:
   a) Be cautious - electrodevices especially easily fail at maloperation with them during check, connection and service.
   b) do not leave ignition for a long time included at the switched off engine.
   c) Never disconnect wires from the battery at the working engine.
   d) At connection of wires from the auxiliary power supply at emergency start of the engine observe polarity.
   e) Always disconnect a negative wire from the battery the first and connect the last in order to avoid short circuit at a casual contact the tool during an otdavanija/tightening of a clip of the plug.


Separate characteristics are resulted also in the text of the Head and in case of compulsion of their performance are allocated by a bold type

Ignition and management DME system

Spark plugs with two electrodes of weight








520i, 523i, 528i

Engine type


Idling turns, rpm

750 50

The maximum turns, rpm

6500 50

Concentration WITH volume, % before/ambassador
каталитического the converter

0.7 yo0.5/0.5 0.3

Resistance at +20С (if it is not set differently):


The pulse gauge
Numbers of turns/positions

1280 128 Ohm

The pulse gauge of recognition of the cylinder


 •  between conclusions 1 and 2

</= 1.0 Ohm

 •  between conclusions 2 and 3

> 10 мОм (infinitely)

The gauge of temperature of the engine


 •  at temperature
Cooling liquid 20

2.2 - 2.7 clod

 •  at temperature
Cooling liquid 80

2.2 - 2.7 clod

The gauge of temperature of soaked up air


 •  at temperature of air 20

2.2 - 2.7 clod

 •  at temperature of air 50

0.76 - 0.91 clod

The ignition coil


 • a  primary winding

0.8 0.1 Ohm

 • a secondary winding

It is not measured

The spark plug tip

5 clod 500 Ohm

The storage battery


12 In, negative weight



 • 520i, 523i, 528i

70 Ach

 • 535i, 540i, 525tds

90 Ach

Gymnastics degree  

 • it is completely discharged, density

1.15, 16 Ве

 • полуразряжена, density

1.22, 24 Ве

 • it is completely charged, density

1.26, 30 Ве

The electrolit density in all banks should
To be identical, the maximum difference

No more than 0.04 g/ml

Greasing for battery plugs

Bosch Ft 40 v 1

Food element брелка remote control




The generator



Current, And

80 (бенз.), 110 (диз.)




Capacity, kw


Efforts of a tightening of carving connections

The moments of an inhaling of fixture are resulted in the text of the Head and on some иллюстрациях*.
*Выделенные in the text a bold type the inhaling moments are subject to exact observance; the efforts not allocated with a bold type are resulted only roughly

The characteristic


Spark plugs

25 Nanometers