Audi A4

since 1994 release

Manual of the car

Audi A4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ System of an exhaust
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and channels of absorption
+ System of injection
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ System of ignition
+ Lighting
+ Alarm equipment
- Tools and devices
   Check of control tools and bulbs
   The combined device
   Speedometer
   Tachometer
   Hours
   Indicator of amount of fuel
   Indicator of temperature of cooling liquid
   Auxiliary devices
   Control bulbs above in the combined device
   Control bulb of cooling liquid
   Control bulb of level of brake fluid
   Control bulb of pressure of oil
   Control bulb of indexes of turns
   Control bulbs in devices of a round form (and nearby)
   Control bulb of indexes of turn on the trailer
   Control bulb of ASR
   Control bulb of the lock of ignition
   Control bulb of high beam headlamps
   Control bulb of a safety cushion
   Control bulb of ABS
   Control bulb of the parking brake
   Control bulb of accumulator charging
   System of autocontrol of the car
   Switches
   Ignition lock
   Check of switches
   Alarm buzzer of lighting
   Lighter
   The warmed back glass
   Check of screen wipers and windscreen washers
   Engine of screen wipers
   The help at malfunctions
   The gulf of liquid for washing of glasses
   System of washing of headlights
   Adjustment of a mirror with the electric drive
   Central lock
   Window regulators with the electric drive
   Sliding/removable roof with the electric drive
   Radio receiver
   The antenna on back glass
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics

Tachometer

The tachometer shows revolutions per minute of the crankshaft of the engine. For this purpose he receives the ignition impulses transferred from the control unit of system of ignition/injection of fuel. They are summarized by electronics of the device and in the processed look are transferred to the measuring device of the analog indicator.

At malfunctions it is necessary to check the corresponding safety locks (the head the Electrotechnical equipment) and wires. Defect can be also in an electrotechnical payment of the combined device.