Audi A4, S4

Since 2000 of release

Repair and car operation

Audi A4, S4
+ Introduction
+ Controls and receptions of safe operation
- Current leaving and service
   The indicator of term of approach of maintenance service
   The routine maintenance schedule
   The general information on adjustment
   Check of levels of liquids, the control of leaks
   Check of a condition of tyres and pressure in them. A designation of tyres and disks of wheels. Rotation and replacement of wheels
   Replacement of impellent oil and the oil filter
   Checks of brake system. Adjustment of a lay brake
   Check of fuel system
   Check of a condition and replacement of hoses of an impellent compartment, localisation of leaks
   Check of a condition of ridge belts of a streaming drive of auxiliary units
   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 of automatic transmission
   The visual control of a box of a gear change and the main transfer on leaks, check of level and oil addition
   Check of a condition a suspension bracket and steering component
   Check of a condition of protective covers of power shafts
   Check of level of a liquid of system of hydrostrengthening of a wheel
   Check of a central air of air
   Greasing of terminators of doors, cylinders of locks, cowl hook, сдвижной panels of the hatch of a roof
   The visual control of a seat belt and the block of a pillow of safety
   Check of working capacity of headlights and horn
   Condition check, adjustment and replacement of brushes of screen wipers
   Check of a condition of the battery, care it and gymnastics
   Replacement of the battery of emergency supply of system Telematik
   Replacement of an element of the filter of air of salon / the coal filter of clearing of air
   Replacement of a brake liquid
   Check and replacement of spark plugs. Check of a condition of high-voltage wires
   Replacement of an element of the air filter of the engine
   Replacement of the fuel filter
   Check of a condition and tension of a gear belt
+ The engine
+ Systems of cooling, heating and the air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Manual box of a gear change
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Check of functioning of system of cooling and frost resistance of a cooling liquid

Address also to materials Check of a condition and replacement of hoses of an impellent compartment, localisation of leaks Has undressed.


  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 broad tank. Carefully wash out it from within and outside of pure water. Check up a sealing lining of a cover. Low level of a cooling liquid can be a consequence wrong наворачивания covers.
  4. Also wash out a jellied mouth. Presence of traces of corrosion in a jellied mouth means that it is necessary to replace a liquid. The liquid in a radiator should be rather pure and transparent. If it has brownish colour, devastate system and fill in in it a new liquid
  5. 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 liquid leak.
  6. Make sure of reliability of fastening of all шланговых connections. Liquid 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.
  7. 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.
  8. If liquid 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.

Appreciable leak of a cooling liquid and-or oil presence in a liquid, and also white a cloudlet in the fulfilled gases specify in defect presence in a sealing lining of a head of cylinders.

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.

It is required to you special ареометр with graduation of frost resistance of antifreeze.



  1. 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 make nearby +20С. At 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.
  2. Cautiously turn away a stopper of a broad tank.
  1. Type a liquid by means of a pear ареометра.
  1. The concentration of antifreeze providing protection of system to temperature-25S is usually sufficient, at especially frigid climate to-35S.

Liquid removal


  1. For removal of a cooling liquid place the pallet under a radiator and turn away a stopper of a drain aperture of a radiator.
  2. Completely to remove an old liquid from system it is impossible (without full dismantling of the engine), therefore all volumes resulted in Specifications, are conditional. In practice you can fill in in system about 2/3 ordered quantities of a liquid.
  3. After system refuelling by fresh antifreeze place on a broad tank a label with instructions of concentration, mark of antifreeze and replacement date. Any subsequent replenishment of system (before planned replacement) should be spent only by the specified liquid.

Antifreeze addition

Address to materials of Specifications.

In need of protection of the engine to temperature-25S concentration of antifreeze in a cooling liquid should make 40 %. In need of protection 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 cooling liquid worsen.

Air stoppers

If after replacement of a liquid the engine overheats, the reason, most likely, available air stoppers in system. These stoppers do not allow a liquid to circulate on all system. They appear as a result of too hasty refuelling of system.

If you consider that in system there are air stoppers, first of all try to compress all visible hoses by turns. You define at once, the hose is filled by a liquid or air. As a rule, all air stoppers disappear after the first (after liquid replacement) engine start.

At the working heated-up engine include a heater and its fan. Warm air should arrive in salon in enough. If the temperature of submitted air low, the reason, probably, is an air stopper.

Consequences of occurrence of air stoppers in system can be rather serious (not simply decrease in an overall performance of a heater). The big stopper can stop circulation of a liquid in the engine. To make sure of absence of stoppers in the engine, touch the top hose of a radiator at the working engine — it should be hot. If the hose cold, it testifies to presence of an air stopper in the engine or about the faulty thermostat.

If you could not get rid of air stoppers, allow the engine to cool down completely, uncover a broad tank, try to compress system hoses. If also it has not helped, merge all cooling liquid in the pure container and again fill system with the same liquid, following the recommendations resulted above.