BMW 3 of the E46 series

since 1998 release

Repair and operation of the car


BMW 3 of the E46 series
+ BMW 3 Cars (E46)
+ Current leaving and service
+ Engine
+ Cooling systems, heating
+ Power supply systems, injection and release
+ Electric equipment of the engine
+ RKPP and transmission line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   + Dignostika of electric elements
   - Lighting and alarm system
      Removal and installation/check of a sound signal
      Initialization of remote control
      Replacement of glow lamps of external lighting
      Replacement of glow lamps of internal lighting
      Removal and installation of a headlight
      Removal and installation of a ring cover of a headlight
      Removal and installation of the electric motor of adjustment of range of light
      Adjustment of headlights
      Gas-discharge lamps of a passing beam (xenon lamps)
      Removal and installation of a back lamp
   + Devices and equipment
+ Schemes of electric equipment


Gas-discharge lamps of a passing beam (xenon lamps)

In comparison with halogen lamps of the main complete set of a headlight with gas-discharge lamps (xenon lamps) have brighter passing beam similar to a daylight. Gas-discharge lamps reach the full capacity through 3 with the ambassador of inclusion. At gas-discharge lamps the flask is filled with xenon gas, and light is created as a result of fire of an arch owing to the application of tension between two electrodes. Electronic monitors and the source creating quickly tension 28.000 B for ignition of a light arch are necessary for work of a gas-discharge lamp. For creation of double luminous intensity of the 55 W usual lamp for a gas-discharge lamp enough power is 35 W.

Gas-discharge lamps have big service life. Their replacement if it in general is required, carried out in some years of operation.

When replacing gas-discharge lamps (xenon lamps, the additional equipment) there is a danger to life owing to the unqualified address with an element of a high voltage of a lamp. Therefore replacement of a lamp is not described here.

The system of headlights with xenon light is equipped with dynamic adjustment of range of light which automatically reacts to change of loading of the car.


Dynamic adjustment of range of light of headlights with gas-discharge lamps

For an exception of the blinding action on counter transport of a headlight are equipped with dynamic adjustment of range of light which automatically establishes range of light of headlights depending on various loading of the car.

Sensors on forward and back suspension brackets register each change of level of the car. The electronic monitor processes signals of sensors and via electric motors as appropriate regulates the provision of reflectors of headlights.

Manual adjustment of range of light is not provided. With malfunction in system of electric adjustment of a headlight automatically are established in the lowermost situation.

Adjustment and reading of indications of memory of malfunctions of headlights with gas-discharge lamps requires the special BMW diagnostic unit. Address to the Section Diagnostics of Malfunctions. These works can be performed only on HUNDRED.