If you are talking about front window screen wipers.
Than the problem is in motor that is broken and can't wipe your screen any more. You need to replace it. And you hear a water pump that's give water to screen.
But if it is back window wiper. Then the motor is dead too. Had the same problem. Trying to fix but no success.
Overall solution: replace the electric motor.
SOURCE: audi a4 wipers havejust stopped working
I have the same problem. Check this out.
http://www.audiworld.com/tech/misc44.shtml
I am working o it
SOURCE: audi a4 wiper stops anywhere after 10 sweeps
Hi - had the same problem with mine last year - turned out to be a sticky relay. You can probably hear it clicking with each wipe. These are well over £20 from the dealer, around £5-10 from a breaker, or if you like a challenge (like me) you can unclip the plastic cover off the relay and lightly dress the contacts with a nail board! Good luck.
SOURCE: eratic front wiper motor on a 1996 A4
It is not very difficult to replace the wiper motor, but first you must diagnose this problem. In order to find out the cause of wipers stopping you can try follows:
1. Carefully extract the wiper arms from their axles (two pieces). In some cases you need to use an extracting tool. Heed of the windscreen !!!
2. Disassemble the plastic covers from the bottom of the windscreen.
3. With the bonnet up you can start the engine, (transmission in "N" or "P" position and parking brake on). Now you must switch on the control lever of the wipers, and go to the engine compartment. If the wiper motor runs let the wiper motor running for a few minutes and switch off. Go to the step 4. If the wiper motor do not runs you must check first the electrical feeding of the motor. It is necessary to unscrew three bolts of the mechanism and disconnect the electrical coupling (difficult assurance). If the electrical feeding is OK you must replace the motor - steps 5, 6, 7. If not you must check electrical connections, the control switch of wipers and electric cables.
4. Now you must check the two bearings of wiper mechanism with your hand. In the most cases the left bearing is out of order (is very hot). This is the most encounter fault of the wipers running at Audi.
5. For have enough space to manipulation the wiper motor together with their mechanism you must extract the plastic cover of the engine computer box, and extract also the box screws. Then you can move slowly the engine computer box, just for a few milimeters.
6. You must disconnect the electrical coupling of the motor (difficult assurance), unscrew three bolts of the mechanism and extract together with the motor. You must move them slowly between windscreen and engine computer box until the wiper motor go out together with the mechanism. This is the most difficult operation!
7. Now you can repair the bearings, replace entire wiper mechanism or replace the wiper motor.
It is not very simply, but it works.
Heed of the windscreen !!!
Refit in reverse order.
Success!
SOURCE: 2001 Audi A4 Windshield Wiper Issues....Work on their own
The most likely cause of your symptoms is the wiper motor parking relay has become faulty, however there is a slim possibility the connections within your wiper switch could be an issue, but the relay would be my first and cheepest line of enquiry. Contact your local VAG dealer and expect to pay somewhere in the region of £15. Good luck
SOURCE: Need wiring diagram 02 Audi A4 driver window, have R&r the switch
hi,i would suggest you look ay the plug connection on the harnass between the door and the body,pull back the rubber check the wires for breaks and the plug pins for corrosion,let me know,andy
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