Audi A4

Since 1994 of release

Repair and car operation

Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
- Brakes
   Independent work on brake system
   So the brake system works
   Check of brakes
   Brake liquid
   Check of level of a brake liquid
   Check of brake system on tightness and presence of damages
   Replacement of a brake liquid
   Disk brakes
   Measurement of a thickness of overlays of forward disk brakes
   Check of a condition of brake disks
   Replacement of overlays of disk brakes
   Back disk brakes
   Measurement of overlays of back disk brakes
   Manual brake
   Check of idling of the lever of a manual brake
   The main brake cylinder
   The brake amplifier
   Check of the brake amplifier
   Works on hydraulics of brake system
   Prorolling of brake system
   The help at malfunctions
   ABS and EDS
   What does ABS?
   Function of separate knots
   Electronic system of distribution of brake effort (EBV)
   Infringements in system ABS work
   Electronic blocking of differential (EDS)
+ Wheels and tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics

Check of level of a brake liquid

The constant control


  1. In Audi A4 the control bulb on a control panel shows too low level of a brake liquid also, but nevertheless you should not refuse the visual control:
  2. Open a cowl and wipe a tank with a brake liquid a rag.
  3. Level of a brake liquid should be in a transparent broad tank between marks of "mines" and макс. In this case everything is all right.

Too low level of a brake liquid?

If overlays of disk brakes are already a little erased, the tendency to fall of level of a liquid is looked through up to the bottom mark; if they new liquid level again exceeds the top mark. This absolutely normal phenomenon as at the erased overlays the pistons of a disk brake put forward a bit further leave in cylinders of brake supports больший volume which is filled with a brake liquid. The situation becomes critical when in a tank level of a brake liquid falls below a mark of "mines". As it does not evaporate and is not spent, that is a leaking place. Quickly find out the reason, the brake pedal yet has not refused! Having added will be eyewash!