E46 series BMW 3

since 1998 of release

Repair and car operation

E46 series BMW 3
+ BMW 3 Cars (E46)
- Current leaving and service
   Current leaving
   General information on control
   Check of levels of liquids
   Check of a condition of tires and pressure in them. Designation of tires and disks of wheels
   Replacement of impellent oil and 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
   Check of a condition of driving 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 cooling liquid
   Check of a condition of system of production of the fulfilled gases
   Check of level of oil in a manual box of gear shifting
   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 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 of it and charging
   Replacement of 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
+ Engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ engine Electric equipment
+ RKPP and transmission 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 cooling liquid

1 Many serious violations in operation of the engine are connected with malfunctions of system of cooling. If the car is equipped with automatic transmission, its functioning and service life also are directly connected with work of system of cooling.
2 Check of system of cooling should be made at the cold engine therefore it is better to be engaged in it before the first trip for the present day or not earlier than in three hours after engine switching off.
3 Slowly, being careful in case the engine yet absolutely cooled down, uncover a radiator. Carefully wash out it from within and outside pure water. Also wash out a jellied mouth of a radiator. Existence of traces of corrosion in a jellied mouth means that it is necessary to replace a cooler (address to the Section Replacement of cooling liquid). The cooler in a radiator should be rather pure and transparent. If it has brownish color, drain system and fill in in it a new cooler.
4 Carefully check 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 if to compress a hose a hand. Pay special attention to the collars holding hoses on components of system of cooling. These collars can cut or pierce hoses that will lead to leakage of a cooler.


5 Make sure of reliability of fastening of all shlangovy connections. Leakages of a cooler are usually shown in the form of white or rusty color of deposits in the field of sealing violation. If on your car collars of wire type are used, it is possible, there is a sense to replace them with collars of screw type.
6 by means of the compressed air or a soft brush clear a forward part of a radiator (and also the condenser of the conditioner of air where it is available). Remove all insects, leaves and the other extraneous subjects which have got on edges of a radiator. Be very careful not to injure an edge and not to cut about them fingers.
7 If cooler level constantly falls, and you did not find 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 cooling liquid

Do not allow antifreeze hit on your skin and the painted surfaces of the car. At hit immediately wash away 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 spilled on a floor; its sweetish smell can easily involve in itself children or pets. Consult about local rules of utilization of the fulfilled antifreeze. In many areas there are special centers for its acceptance.

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

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


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

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

9 Carefully unscrew a stopper of a broad tank.

10 Gather liquid by means of an areometer pear.

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

Antifreeze addition

Address to materials of Specifications at the beginning of Head.

In need of ensuring frost resistance to temperature – 25°С concentration of antifreeze in cooling liquid should make 40 %.

In need of ensuring frost resistance to temperature – 35°С concentration of antifreeze should make 50 %.

If higher extent of protection against freezing is required, it is possible to raise level of concentration of antifreeze to 60 %. Such concentration will provide protection to – 40°С. If concentration raises to higher level, extent 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 concentration of antifreeze, address to Specifications.