Audi A4, S4
since 2000 of release
Repair and car operation
Audi A4, S4
+ Governing bodies and receptions of safe operation
+ Current leaving and service
+ Systems of cooling, heating and air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
- Systems of electric equipment of the engine
+ ignition and engine management System
+ System of preheat of the diesel engine
+ Diagnostics of systems of electronic control and diagnostic equipment
- Charging and start systems
The storage battery - the main data and acquisition of the new battery
Check and charging of the storage battery
Replacement of the storage battery
Storage of the storage battery
Charging system - general information and security measures
Check of system of a charging
Removal and generator installation
Removal and regulator installation tension/replacement of brushes
System of start of the engine - the general information and precautionary measures
Removal and starter installation
Check of system of start of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
Check and charging of the storage battery
The low-served storage battery
If annual run of the car is insignificant, for check of a zaryazhennost of the accumulator each three months it is necessary to measure electrolit density. Measure density by the areometer and compare the received result with given in the table presented below.
Keep in mind that data are provided for electrolit temperature 15°С. At increase in temperature at everyone 10°С it is necessary to add on 0.007, at similar reduction — to read on 0.007.
If the condition of the battery causes fears, check electrolit density in everyone bank. The difference on more than 0.040 indicates loss of electrolit or damage of plates.
If the difference in density exceeds 0.040 aккумулятор is subject to replacement. If the difference in density satisfactory, but the battery is discharged, it it is necessary to charge and check electrolit density. The sequence of actions at a charging is given below.
Unattended storage battery
If on the car the tight storage battery is established, to check density of electrolit and to restore its level it is impossible. The condition of the battery can be checked by means of the built-in indicator or the external voltmeter.
Some models are equipped with unattended batteries which case the indicator of degree of a zaryazhennost is built in. It is located from above and changes the color at change of degree of a zaryazhennost of the battery. If the indicator has green color, the battery is completely charged, if the indicator red - the battery has to be charged. The sequence of actions at a charging of the battery is given below in this Section. Batteries of other producers too can have the built-in indicator of degree of a zaryazhennost. In this case follow the instructions provided in the maintenance instruction of the storage battery.
Storage batteries of all types
At battery check by means of the external voltmeter connect it to plugs and compare the received result to the data provided in Specifications. The result of measurements will be true if the battery was not charged at least within the last 6 hours. If it was charged - include for 30 seconds of a headlight, then wait for 5 minutes and check tension on plugs. All other electric equipment (including even vnutrisalonny lighting) should be thus included.
If result of measurements less than 12.0 In, the battery is discharged, and tension from 12.0 to 12.4 signals about a partial razryazhennost.
If the battery is necessary for charging, remove it from the car (address to the Section Replacement of the storage battery) and charge, following the procedure described below.
Check of fastening of plugs of the storage battery and holder
Move plugs of the storage battery in different directions and check reliability of their fastening, if necessary tighten.
If the storage battery is badly fixed, tighten a bolt of fastening the moment 20Нм.
Check of the storage battery under loading
Attach to battery plugs the voltmeter.
Start the engine and check tension.
At the moment of engine start at completely charged batteries tension should not fall below 10 In (at electrolit temperature near +20°С).
If tension sharply falls and the electrolit density in various sections is various, the battery is damaged and it is necessary to replace it.
The sequence of actions given below can differ from recommended by the producer of the accumulator established on the car. In this case use recommendations of the producer.
The ordinary and low-served storage battery
To charge the battery follows a current equal of 10 % from capacity (for example if the capacity of the battery makes 45 Ach to charge it follows a current of 4.5 Amperes) until within 4 hours the electrolit density in banks will not increase.
On the other hand, the automatic charger with a current about 1.5 amperes can be left included on all night long.
Accelerated chargers of type which, allegedly, can charge completely the accumulator in a couple of hours, it is not recommended use, as at big currents of a plate of the battery can overheat and collapse.
At a charging of the battery watch, that the temperature of electrolit did not exceed 37.8°С.
Charging of the unattended battery
For a full charging of the battery of this type bigger time, than for a charging low-served or usual is required. Duration of a charging depends on degree of a razryazhennost and can borrow about three days.
The tension developed by the charger, should lie in a range 13.9 - 14.9 Volts, the current should not exceed 25 Amperes. Under existing conditions the battery can be used in 3 hours, tension on plugs should be about 12.5 Volts. Achievement of a full charging will take longer time.
Remarks on security measures
Before a charging of the storage battery familiarize with remarks on the security measures given in the Section Check of a condition of the battery, care of it and a charging.
Charging of strongly discharged and sulfatirovanny storage battery
The storage battery, long time not used (for example, at long parking of the car), is discharged and сульфатируется over time.
If tension of idling of the battery lies below 11.6 In, the battery is considered strongly discharged. Check tension of rest, thus address to the Section Check of a condition of the battery, care of it and a charging.
At strongly discharged battery of electrolits consists almost of one water.
Strongly discharged battery сульфатируется, i.e. on a surface of electrodes large low-soluble crystals of sulphurous lead are formed. The electrolit thus loses transparency and gets weak white coloring.
Strongly discharged and sulfatirovanny battery should be charged by a small current (about 5 % from capacity size). For example, at capacity of the battery 60 of Ach, force of a charging current should make 3 And.
Tension at a charging should make no more than 14.4 Century.
The fast charging/the help at start
The device for a fast charging charge the battery only for ensuring start of the car. Thus force of a charging current makes 20 % and more from battery capacity. Thus the battery is damaged, since is exposed to influence of big currents. Time not used and strongly discharged battery is long it is not necessary to charge the device for a fast charging since it leads to a sulfatatsiya.