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
   Current leaving
   The general information on adjustment
   Check of levels of liquids
   Check of a condition of tyres and pressure in them. A designation of tyres and disks of wheels
   Replacement of impellent oil and the oil filter
   Replacement of a filtering element of the air filter
   Checks of brake system
   Replacement of an element of the filter of air of salon
   Condition check приводных ridge belts
   Check of a condition and replacement of hoses of an impellent compartment
   Check of functioning of system of cooling and frost resistance of a cooling liquid
   Check of a condition of system of release of the fulfilled gases
   Check of level of oil in a manual box of a gear change
   Check of a condition of components of a suspension bracket and steering
   Check of a condition of protective covers of power shafts
   Check of level of a liquid of system of hydrostrengthening of a wheel
   Visual check of a body and its bottom
   Check of seat belts
   Rotation and replacement of wheels
   Condition check, replacement of brushes and adjustment of a corner of screen wipers
   Check of a condition of the battery, care it and gymnastics
   Replacement of a brake liquid
   Check and replacement of spark plugs
   Check of fuel system, replacement of the fuel filter. Operation of diesel model in the conditions of winter
   Greasing of loops and locks of doors
   Replacement of a battery of a key of remote control
+ The engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ Engine electric equipment
+ 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 functioning of system of cooling and frost resistance of a cooling liquid

1 Many gross infringements in engine work are connected with malfunctions of system of cooling. If the car is equipped by automatic transmission its functioning and service life also directly are connected with work of system of cooling.
2 Check of system of cooling should be made at the cold engine, therefore is better be engaged in it before the first trip for a present day or not earlier than in three hours after engine deenergizing.
3 Slowly, being careful in case the engine has not absolutely cooled down yet, uncover a radiator. Carefully wash out it from within and outside of pure water. Also wash out a jellied mouth of a radiator. Presence of traces of corrosion in a jellied mouth means that it is necessary to replace a cooler (address to Section Replacement of a cooling liquid). The cooler in a radiator should be rather pure and transparent. If it has brownish colour, drain system and fill in in it a new cooler.
4 Carefully check up radiator hoses, and also hoses of a heater which have smaller diameter. Check hoses of system of cooling on all length, making replacement of any burst, blown up or worn out hose. Cracks are easier for finding out if to compress a hose a hand. Will pay special attention on the collars keeping hoses on components of system of cooling. These collars can cut or pierce hoses that will lead to cooler leak.


5 Make sure of reliability of fastening of all шланговых connections. Cooler leaks are usually shown in the form of white or rusty colour of adjournment in the field of hermetic sealing infringement. If on your car collars of wire type it is possible are used, there is a sense to replace them with collars of screw type.
6 By means of compressed air or a soft brush clear a forward part of a radiator (and also the condenser of the conditioner of air, there, where it is available). Remove all insects, leaves and the other extraneous subjects which have got on edges of a radiator. Be very cautious not to damage an edge and not to cut about them fingers.
7 If cooler level constantly falls, and you have not found out any leaks, it is necessary to make check by pressure of a cover of a radiator and all cooling system.

Check of frost resistance of a cooling liquid

Do not suppose antifreeze hit on your skin and the painted surfaces of the car. At hit immediately wash off a plentiful quantity of water. Antifreeze is extremely toxic and mortally dangerous at hit in an organism. Do not leave antifreeze in the open container or spilt on a floor; its sweetish smell can easily involve in itself children or pets. Consult about local rules of recycling of the fulfilled antifreeze. In many areas there are special centres on its acceptance.

Before the beginning of a winter season it is necessary to check up necessarily concentration of antifreeze in a cooling liquid, especially if in system pure water was while in service filled in.

For this purpose the frost resistance measuring instrument is required. There is also an optical tool for check of level HAZET № 4810.


8 Slightly warm up the engine so that the top hose of a radiator has heated up. At measurement of concentration of antifreeze the liquid temperature should be close to +20С.

On the hot engine the stopper of a broad tank should be opened cautiously. There is a danger of a burn! It is necessary to put a rag on a stopper. A stopper open only at temperature of a liquid no more +90С.

9 Cautiously turn away a stopper of a broad tank.

10 Type a liquid by means of a pear hydrometerа.

11 In our widths the concentration of antifreeze providing protection of system to temperature-25S is sufficient, at especially frigid climate to-35S.

Antifreeze addition

Address to materials of Specifications in the beginning of the Head.

In need of maintenance of frost resistance to temperature-25S concentration of antifreeze in a cooling liquid should make 40 %.

In need of maintenance of frost resistance to temperature-35S concentration of antifreeze should make 50 %.

If higher degree of protection against freezing is required, it is possible to raise level of concentration of antifreeze to 60 %. Such concentration will provide protection to-40S. If concentration raises to higher level, degree of protection of the engine starts to go down and, besides, heat-removing properties of a cooler worsen.

12 Remove necessary quantity of a cooler and add antifreeze according to data of Specifications.
13 Close a stopper on a radiator and after a trial trip again check up concentration of antifreeze, address to Specifications.