BMW 3 series E46

Since 1998 of release

Repair and car operation

The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
- Engine electric equipment
   The general information and security measures
   + System of electronic control by ignition and injection of the petrol engine
   + Ignition system
   + System of preheat of the diesel engine
   - Charge and start systems
      The general information on system
      The battery - the basic data and leaving
      Removal and installation of the storage battery
      Check of the storage battery
      The generator. The general data and security measures
      Removal and generator installation
      Check and replacement of brushes of the generator / of a regulator of pressure
      Removal and installation, starter check
      Removal, installation and check of the traction relay of a starter
+ Manual transmission and transmission a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes

Check of the storage battery

The built in index of degree заряженности batteries

The indicator has green colour

The battery has sufficient degree заряженности

The indicator has black colour

The battery gymnastics are required

The storage battery of car BMW of 3 series has the built in index of degree заряженности batteries (the marksman on an illustration), located on the top party of the battery. This “the magic eye” can show, of course, only the basic condition заряженности.

The battery does not demand service. Addition of the distilled water is not required. Electrolit level can be defined outside. It is in area marks MAX-1, approximately on 5 mm above lead plates.

Check of level of electrolit (at the batteries demanding service)

If the storage battery not firms BMW it is a question, as a rule, about so-called малообслуживаемой to the battery is bought. In this case, if electrolit level falls below mark MIN, it is required to add one-two time in a year the distilled water. All sections of the battery should have the identical level of electrolit which are between marks MAX and MIN.

Electrolit level is checked necessarily outside. If it is impossible to make it, remove carving covers and glance in section from above. Electrolit level should be on 5 mm above lead plates.

Check of density of electrolit

The electrolit density in a combination to pressure of the battery provides guidance on degrees заряженности batteries.

The electrolit temperature at measurement should not be more low +10С.

1 Switch off ignition.

2 Turn out stoppers from all sections of the battery. If there is a cover lath, preliminary remove it by means of a screw-driver.

3 Ship in electrolit денсиметр and suck away such quantity of electrolit at which the float will emerge. The above relative density (density) of the taken sample of electrolit, the emerges a float more. On a device scale it is possible to consider value of relative density (g/ml) or degrees to Boma (+ Ве).
4 Density of electrolit should be not less than 1.20/ml If value of density more low, the battery is necessary for charging. Address to Specifications.
5 Consistently check up each section of the battery. All sections should have identical density (the maximum difference of 0.04 g/ml). The big difference specifies in battery damage.
Check of pressure of rest of the battery

The condition of the storage battery is checked by measurement by the pressure voltmeter between battery poles.

6 Disconnect battery poles, address to Section Removal and installation of the storage battery.
7 Battery should be disconnected for 2 hours prior to check.

8 Attach the voltmeter to poles of the battery and measure pressure.

9 Estimation of results of measurement:

12.5 In or above - the battery in a satisfactory condition
12.4 In or more low - the battery in an unsatisfactory condition, is required a gymnastics or battery replacement
10 Attach a negative cable (-) to the battery, address to Section Removal and installation of the storage battery.

Check of pressure of the battery under loading

11 Attach the voltmeter to battery poles.
12 Ask the assistant to start the engine and consider thus pressure.
13 In the course of start at full gymnastics of the battery pressure should not fall more low 10 In (at electrolit temperature nearby +20С).
14 If pressure falls at once also electrolit density in sections is various, the battery is damaged.