Electrical equipment and devices of the car BMW 3 Series E46

Technical data of the body electrical equipment
System type - 12V, with negative ground Fuses - See fuse box cover Light bulbs - power, W Outdoor lighting fixtures Side turn signal repeater - 5 Direction...

Tightening torques for connections, Nm
Airbag system mountings Screws for fixing the airbag in the door - 8 Driver Airbag Mounting Screws - 8 Impact sensor mounting bolts - 10 Passenger Airbag Cover...

Basic information and precautions
Warning! Before performing any work on the electrical system, read the warnings given in paragraph " Safety first! " at the beginning of this Guide and in...

Troubleshooting Electrical Circuits — Basics
Note: Before you begin, please read the warnings given in paragraph " Safety first! " and in paragraph 1 of this chapter. The procedures described in this...

Fuses and Relays — Basic Information
Main fuses 1. Most of the fuses are located behind the glove box on the passenger side, with the remaining fuses installed in a box located in the left corner...

Switches — removal and installation
Note: Before removing the switch, you must disconnect the wire from the negative battery terminal ( see chapter 5A ) and reconnect it after installing the...

Exterior Light Bulbs — Replacement
Basic information 1. When replacing light bulbs, please keep the following in mind. a) Remember that the light bulb may be hot immediately after switching off....

Interior Light Bulbs — Replacement
Basic information 1. See paragraph 5. p. 1. Interior lighting fixtures 2. Using a small flat-head screwdriver, carefully pull out the lampshade and disconnect...

External lighting devices — removal and installation
Headlight 1. Remove the appropriate direction indicator (see item 12). 2. Carefully remove the headlight washer nozzle (if it exists) from the bottom of the...

Headlight adjustment — general information
1. Precise adjustment of the headlight beam requires special optical equipment. Therefore, it should be performed at dealers or at a car station with the...

Instrument panel — removal and installation
Removal 1. Disconnect the cable from the negative battery terminal ( see chapter 5A ). 2. Fully lower and pull the steering column towards you. 3. Remove the...

Dashboard Components — Removal and Installation
Since most of the sensors and systems in the BMW 3 Series are connected via a system data bus, the instrument cluster is the information centre. The K-bus...

Rain sensor — removal and installation
1. The rain sensor is built into the central rear-view mirror. Press the lower edge of the mirror trim, squeeze the two halves of the support trim and release...

Axle load sensor — removal and installation
Removal 1. Cars equipped with xenon headlights have an automatic headlight beam adjustment system. Sensors installed on the front and rear axles of the car...

Tire Pressure Monitoring System (RDC) — Basic Information and Component Replacement
Basic information 1. The tire pressure monitoring system (RDC) is installed as an optional extra on most BMW 3 Series models. The system consists of a...

Horn(s) — Removal and Installation
Removal 1. The sound signal is installed behind the bumper on the right and left. 2. To access the horns from underneath, apply the parking brake, raise the...

Windscreen wiper arm — removal and installation
Removal 1. Turn the wiper on and then off so that the lever returns to its original position. 2. Place a strip of tape along the wiper blade - you will need it...

Windscreen wiper drive — removal and installation
Removal 1. Remove the windshield wiper arm ( see paragraph 15 ). 2. Open the hood. 3. Remove the heating system air duct housing as follows: (fig. 16.3, a, b):...

Windscreen/Headlight Washer Components — Removal and Installation
Windshield and headlight washer reservoir 1. The windshield washer reservoir is located in the engine compartment. In models with headlight washers, the fluid...

Car radio — removal and installation
Note: The removal and installation procedures apply to standard equipment installed by BMV. These procedures will differ for non-standard equipment. Removal...

Speakers — Removal and Installation
Door speakers 1. Remove the door trim ( see chapter 11 ). 2. Remove the three screws and remove the speaker from the trim (Fig. 19.2). 3. Unscrew the large...

Radio Antenna — General Information
The radio antenna is built into the rear window. To improve reception quality, the antenna is equipped with a signal amplifier. The amplifier is installed...

Cruise Control System — Basic Information and Component Replacement
Basic information 1. The cruise control system is part of the engine management system. In this system, only external components such as the clutch pedal...

Anti-theft alarm system — basic information
The E46 3 Series models are equipped with an advanced anti-theft alarm system and immobilizer. If a fault occurs in the system, special equipment is required...

Front Seat Heating System Components — Removal and Installation
Heated pads In models with heated front seats, heated pads are installed on the seat cushion and backrest. To replace such a pad, you need to separate the...

Airbag System — Basic Information and Precautions
The models described in this manual are equipped with a driver's airbag (in the center of the steering wheel) and passenger airbag (it is located under the...

Airbag System Components — Removal and Installation
Note: Please read the warnings before performing the following operations paragraph 24 . 1. Disconnect the cable from the negative battery terminal ( see...

Remote Parking Control System — Basic Information and Component Replacement
Basic information 1. To make parking easier, BMW 3 Series cars are equipped with a system that informs the driver of the distance between the rear of the car...

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