Car tools and appliances Audi A4 B5, petrol
Checking control instruments and lamps
This chapter covers everything that is controlled or operated by pressing a button: vehicle and engine status indicator and warning lights, switches,...
This chapter covers everything that is controlled or operated by pressing a button: vehicle and engine status indicator and warning lights, switches,...
Combination device
Here we have removed the combination instrument cluster trim panel (3) to expose both Phillips-head mounting screws (1 and 2). The multi-pin connector (2) can...
Here we have removed the combination instrument cluster trim panel (3) to expose both Phillips-head mounting screws (1 and 2). The multi-pin connector (2) can...
Speedometer — dismantling and inspection
The speedometer in the Audi A4 is, as it should be, an electronic measuring device just like the rev counter. It also processes the rev pulses it receives (not...
The speedometer in the Audi A4 is, as it should be, an electronic measuring device just like the rev counter. It also processes the rev pulses it receives (not...
Tachometer — check
The tachometer shows the number of revolutions per minute of the engine crankshaft. To do this, it receives ignition pulses transmitted from the ignition/fuel...
The tachometer shows the number of revolutions per minute of the engine crankshaft. To do this, it receives ignition pulses transmitted from the ignition/fuel...
Watches — repair
If the clock does not work at all, troubleshooting is limited to checking the relevant fuse or supply cable. Repairs, as in the case of other devices, are...
If the clock does not work at all, troubleshooting is limited to checking the relevant fuse or supply cable. Repairs, as in the case of other devices, are...
Fuel quantity indicator
The fuel level is shown electrically on the dashboard. The deflection of the fuel gauge needle is changed by contact with the ground. This is ensured by the...
The fuel level is shown electrically on the dashboard. The deflection of the fuel gauge needle is changed by contact with the ground. This is ensured by the...
Coolant temperature indicator
The coolant temperature sensor (1) in a four-cylinder engine is located at the rear of the cylinder head. You will find the sensor contact designation on the...
The coolant temperature sensor (1) in a four-cylinder engine is located at the rear of the cylinder head. You will find the sensor contact designation on the...
Auxiliary devices
As a special option, two additional devices can be installed at the bottom right and left of the combined instrument panel – an oil temperature sensor and a...
As a special option, two additional devices can be installed at the bottom right and left of the combined instrument panel – an oil temperature sensor and a...
Indicator lights at the top of the combined instrument panel
In cars without an automatic control system, the indicator field at the top between the round instruments contains a coolant warning light, a brake system...
In cars without an automatic control system, the indicator field at the top between the round instruments contains a coolant warning light, a brake system...
Coolant warning light
Cars without automatic control system If the coolant warning light starts flashing while driving, stop immediately: 1. Check the coolant level (chapter Cooling...
Cars without automatic control system If the coolant warning light starts flashing while driving, stop immediately: 1. Check the coolant level (chapter Cooling...
Brake fluid level indicator light
The brake system indicator light flashes when the ignition is turned on during the functional check; when the engine is running, it should go out. If it...
The brake system indicator light flashes when the ignition is turned on during the functional check; when the engine is running, it should go out. If it...
Oil pressure warning light
Brake fluid level indicator light The oil pressure in the Audi A4 engine is monitored by an oil pressure sensor in conjunction with an electronic logic unit in...
Brake fluid level indicator light The oil pressure in the Audi A4 engine is monitored by an oil pressure sensor in conjunction with an electronic logic unit in...
Direction indicator light
On the right and left, next to the small round instruments at the top of the combined instrument cluster, are the two indicator lights. They are directly...
On the right and left, next to the small round instruments at the top of the combined instrument cluster, are the two indicator lights. They are directly...
Indicator lights in round instruments (and nearby)
When replacing the control lamps in the middle indicator field, if the vehicle is equipped with the control system, the control lamps mentioned below are...
When replacing the control lamps in the middle indicator field, if the vehicle is equipped with the control system, the control lamps mentioned below are...
Trailer direction indicator light
It flashes rhythmically if the corresponding trailer turn signal is functioning when the trailer lighting is connected. If the trailer turn signal is faulty,...
It flashes rhythmically if the corresponding trailer turn signal is functioning when the trailer lighting is connected. If the trailer turn signal is faulty,...
ASR control light
In cars with electronic wheel slip control, this light comes on briefly when the ignition is turned on and then goes out. The light flashes while driving if...
In cars with electronic wheel slip control, this light comes on briefly when the ignition is turned on and then goes out. The light flashes while driving if...
Ignition switch indicator light
When the ignition is turned on, the light confirms that the ignition key and the car data are aligned. When using someone else's key, the light is constantly...
When the ignition is turned on, the light confirms that the ignition key and the car data are aligned. When using someone else's key, the light is constantly...
High beam headlight indicator light
When the ignition is on or when the light signal is on, the high beam indicator lamp receives current from the "high beam" fuse (chapter Electrical equipment )...
When the ignition is on or when the light signal is on, the high beam indicator lamp receives current from the "high beam" fuse (chapter Electrical equipment )...
Airbag indicator light
This indicator light monitors the airbag and the seat belt tensioner in the front seats. To perform a functional check, it lights for about 10 seconds after...
This indicator light monitors the airbag and the seat belt tensioner in the front seats. To perform a functional check, it lights for about 10 seconds after...
ABS warning light
This indicator light also comes on to check the system function when the ignition is turned on. If not, replace the light bulb (as described). When the engine...
This indicator light also comes on to check the system function when the ignition is turned on. If not, replace the light bulb (as described). When the engine...
Parking brake indicator light
When the parking brake is applied, the switch closes the connection to ground. This allows the indicator lamp to light, since it is supplied with voltage...
When the parking brake is applied, the switch closes the connection to ground. This allows the indicator lamp to light, since it is supplied with voltage...
Battery charging indicator light
When the engine is running, the charge indicator light should neither glow nor flash. Otherwise, there is a fault in the current supply, see the...
When the engine is running, the charge indicator light should neither glow nor flash. Otherwise, there is a fault in the current supply, see the...
Automotive control system
The outside temperature indicator probe (2) is located on the bracket in front of the radiator (1). On special request, the Audi A4 can be equipped with the...
The outside temperature indicator probe (2) is located on the bracket in front of the radiator (1). On special request, the Audi A4 can be equipped with the...
Switches — dismantling
Removing the switch lever, step 1: After loosening the two Phillips-head screws (2 and 3), remove the upper steering column trim (1). Removing the switch...
Removing the switch lever, step 1: After loosening the two Phillips-head screws (2 and 3), remove the upper steering column trim (1). Removing the switch...
Ignition switch
With the steering column trim removed, both countersunk screws (1 and 2) are visible, which secure the ignition switch assembly to the lock. The number "3"...
With the steering column trim removed, both countersunk screws (1 and 2) are visible, which secure the ignition switch assembly to the lock. The number "3"...
Checking switches
Execution order 1. Using the test lamp's needle contact, you can pierce the wire insulation and determine which wire has voltage. 2. Find the electrical...
Execution order 1. Using the test lamp's needle contact, you can pierce the wire insulation and determine which wire has voltage. 2. Find the electrical...
Lighting signal buzzer
The buzzer sounds if the light remains on when the door is open and the ignition key is removed. The warning sound comes from the signal buzzer, which is...
The buzzer sounds if the light remains on when the door is open and the ignition key is removed. The warning sound comes from the signal buzzer, which is...
Cigarette lighter
The electric cigarette lighter receives direct current through the corresponding fuse. If, despite a working fuse, the cigarette lighter does not work, then...
The electric cigarette lighter receives direct current through the corresponding fuse. If, despite a working fuse, the cigarette lighter does not work, then...
Heated rear window
Exposed right roof pillar 1 - antenna connection; 2 - connection of rear heated glass; 3 - antenna wire to the radio receiver; 4 - control line from the radio...
Exposed right roof pillar 1 - antenna connection; 2 - connection of rear heated glass; 3 - antenna wire to the radio receiver; 4 - control line from the radio...
Checking windshield wipers and washers
On the disassembled brush we have marked the following parts with numbers 1 - metal lever mechanism; 2 - metal strip; 3 - rubber wiper blade attachment. To...
On the disassembled brush we have marked the following parts with numbers 1 - metal lever mechanism; 2 - metal strip; 3 - rubber wiper blade attachment. To...
Windscreen wiper motor
When the ignition is on, the windscreen wiper motor is supplied with current through the X-contact unloading relay and the fuse (chapter Electrical equipment...
When the ignition is on, the windscreen wiper motor is supplied with current through the X-contact unloading relay and the fuse (chapter Electrical equipment...
Help with malfunctions
Windscreen wipers Malfunction Its reasons Your help A. Windscreen wipers don't work 1. Defective fuse 2. Defect in the unloading relay 3. The windshield wiper...
Windscreen wipers Malfunction Its reasons Your help A. Windscreen wipers don't work 1. Defective fuse 2. Defect in the unloading relay 3. The windshield wiper...
Filling with windshield washer fluid
Constant control Exhaust gas residues, oil vapors and silicone from varnish care products stubbornly settle on the glass. Therefore, in the warm season, it is...
Constant control Exhaust gas residues, oil vapors and silicone from varnish care products stubbornly settle on the glass. Therefore, in the warm season, it is...
Headlight washer system
Depending on the engine and the headlight washer system, the Audi A4 is equipped with different windshield washer fluid tanks (1). But in any case, the water...
Depending on the engine and the headlight washer system, the Audi A4 is equipped with different windshield washer fluid tanks (1). But in any case, the water...
Electrically adjustable mirror
Below are described mirrors with electric drive without the tilt function. More detailed information on the topic of mirrors (mechanical part) you will find in...
Below are described mirrors with electric drive without the tilt function. More detailed information on the topic of mirrors (mechanical part) you will find in...
Central lock
Emergency release of the fuel filler flap if the central locking system is faulty: remove the right-hand luggage compartment trim, fold back the insulating...
Emergency release of the fuel filler flap if the central locking system is faulty: remove the right-hand luggage compartment trim, fold back the insulating...
Electric power windows
The operating mode of the window lifters is determined not only by the switches, but also by the window lifter control unit on the support with additional...
The operating mode of the window lifters is determined not only by the switches, but also by the window lifter control unit on the support with additional...
Electric sliding/removable roof
If a fault prevents the sliding roof from working, it can be closed using the crank (arrow), which is secured with clips in the fuse box cover when not in use....
If a fault prevents the sliding roof from working, it can be closed using the crank (arrow), which is secured with clips in the fuse box cover when not in use....
Radio receiver — dismantling
Here the radio is removed using two release brackets (1 and 2). The release brackets press on the radio's mounting springs and fit into the slots, which causes...
Here the radio is removed using two release brackets (1 and 2). The release brackets press on the radio's mounting springs and fit into the slots, which causes...
Antenna on the rear window
This type of antenna uses three metal conductive tracks at the very top of the glass as an antenna for receiving medium waves. The remaining conductive tracks...
This type of antenna uses three metal conductive tracks at the very top of the glass as an antenna for receiving medium waves. The remaining conductive tracks...
This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
Similar sections of other Audi car models:
Electrical equipment: Equipment and devices Audi 80 B3 (1986-1991, petrol)
Electrical equipment: Equipment and devices Audi 100 C3 (1982-1990, petrol)
Electrical equipment: Lighting and appliances Audi A3 Type 8L (1996-2003)
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