Question about 1999 Audi A4

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Occasionally the wipers will just stop in the

Occasionally the wipers on my a4 avant will just stop in the parked position, whether on first second or third speed. No amount of changing stick position starts them, they start again of their own accord.

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Make sure that the Wiper delay switch is in the off position. This sometimes will effect it.

Posted on Oct 05, 2009

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Wipers would not park, customer forced down wiper arm and broke off arm. Now no electric to wipers.


Before 1995 Ford interval wiper systems mainly consisted of a switch, the motor and the interval governor (also called the wiper control module or 'WCM'). The basic wiper systems just parked the wipers at the end of their travel at the base of the windshield and involved just one park switch.

The more complex systems not only stopped the wipers at the base of the windshield, but would actually recess them below the windshield to park them. This involved using two park switches to turn the wiper motor in a reverse direction. These were installed on the Crown Victoria, Grand Marquis, Town Car, Taurus and Sable.

The wiper switch (named 'Multi-Function Switch' on most models) had a common return or ground circuit and two input or signal circuits to the WCM. Basically, the switch was two modified potentiometers that varied the resistance to ground for the two signal circuits. When the wiper switch was placed in the low or high position, the WCM looked at only one of the circuits- the 'mode input' -and controlled the wiper motor accordingly. If the wiper switch was placed in any of the interval positions, the mode input told the WCM that the switch was in an interval position. The WCM then looked at the second input - the 'delay input' - and used it to determine the amount of delay between wipes.

1) To run the wipers on low or high speed, the WCM provided constant power to the wiper motor on the proper circuit to provide the requested speed. Dual park switch motors
1.1 The first park switch operated basically in the same way as the single switch systems.
1.2 The second park switch worked in the opposite manner- when the wipers were off the park position, the second switch provided a ground for the wiper motor. Power and ground were now provided by the park switches.
1.3 When the wipers needed to park, the polarity of the switches changed, and thus provided reversed voltage to drive the motor in the opposite direction.

2) To run the interval wipers, the WCM applied voltage to the wiper motor only momentarily to get the wipers off the parked position.
3) The electro-mechanical park switch made a circuit between the power feed in and the output to the WCM. Power was provided from the park switch through the WCM and back to the wiper motor.
4) When the wipers reached the park position, the park switch made a circuit between the ground and the output to the WCM, and the motor stopped running. The wiper motor and the wiper switch have remained much the same as the single park switch motors of the past.

The main difference is that the switch has become an input to the GEM instead of the WCM.
1) When the wiper switch is placed in the low or high position, the Run-Park relay is grounded by the GEM to provide constant voltage to the High-Low relay, which then provides voltage to the proper circuit of the wiper motor.
2) High-Low relay is in the low speed position unless grounded by the GEM.
3) The park switch not only feeds the Run-Park relay but is now also an input to the GEM. This tells the GEM when the wipers are in the parked position so it can de-energize the Run-Park relay.
4) When any of the interval positions are selected, the Run-Park relay is momentarily grounded to get the wipers off the parked position
5) The park switch then provides voltage to the other set of contacts in the Run-Park relay.
6) When the GEM de-energizes the Run- Park relay, voltage is still provided from the park switch to the High-Low relay and the wipers complete the stroke.

Click over diagrams for zoom:

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zjlimited_176.gif


Hope this helps.

Feb 08, 2011 | 1993 Mercury Grand Marquis

1 Answer

Rear wiper wont stop working in both auto,intermitant and off. was wondering whether it would be the relay?


Sounds as if the parked sensor is not working and the motor cannot "find" the correct
park position so it keeps running and looking for park.

Jan 28, 2011 | 2005 Audi A3

1 Answer

Hi I have an audi A4 '99 model the wipers were getting stuck on the intermittent but worked fine on the fastest setting although they didnt re-dock in the correct position when turned off, now they have...


Any luck with this?? I just bought a 99 avant quattro myself and when I use the wipers they don't re-dock.. Intermittent setting stop in the up right position when they are paused ..

Jan 09, 2011 | 2001 Audi A4

1 Answer

I cannot turn the rear wiper off on my A4 Avant, I have replaced the column switch but I still have a constant feed to the motor


having been an audi mechanic for 25 yrs,the first time i came across this prob i was stumped,th relay is part of the on board trip computer & switch is not a straight switch,even with switch discnnected the cwiper still ran,disconnected control relay & i stopped,the problem however tuned ou to be he motor backfeeding,replacement motor cured fault.

Jan 19, 2010 | 2002 Audi A4

2 Answers

Rear wiper of Audi A4 avant has stopped working


On Wiper systems the spindle mechanism can sieze up due to water ingress and corrosion.
This deteriates as you describe to the point it will not work, eventualy you may blow the fuse. A good thing as it protects your wiper motor.
New spindle may be reqiured although you may be able to dissmantle it and work some oil into it.

Oct 03, 2009 | 2004 Audi A4

1 Answer

How to operate the rear wiper in Audi A4 Avante


Push the right stalk switch, the one that operates the front wipers, forward..

Jun 16, 2009 | 2004 Audi A4

1 Answer

Need to get a programmer dont know where its at


  • Windshield Wipers Continue to Run When Turn Signal and Windshield Wiper Switch Are Turned OFF
  • Damaged turn signal and windshield wiper switch .
  • Damaged windshield wiper motor .
  • Damaged windshield wiper control module.
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Pin Number Circuit Circuit Function 1 57 (BK) Wiper Motor Ground (Park) 2 28 (BK/PK) Wiper Module to Wiper Motor (Park Switch) 3 65 (DG) Wiper Motor Power (Park Feed) 4 61 (Y/R) Wiper Motor Common (RUN) 5 56 (DB/O) Wiper Motor LO 6 58 (W) Wiper Motor HI
Windshield Wiper System The windshield wiper system consists of :
  • Windshield wiper motor (17508) (F-type).
  • Washer system.
  • Windshield wiper control module.
  • Turn signal and windshield wiper switch (13K359).
The windshield wiper control module is:
  • Located at the instrument panel fuse panel.
The windshield wiper motor is:
  • Attached to the cowl top extension (021A36) .
  • Connected to windshield wiper mounting arm and pivot shaft (17566) .
The turn signal and windshield wiper switch features a:
  • Rotary wiper switch.
  • Push type washer actuator.
OFF/Low/High Speed
  • Has a two-speed, permanent magnet, three brush electric windshield wiper motor .
  • The windshield wiper motor has a brush rigging that permits selection of low or high speed.
  • When the turn signal and windshield wiper switch is in the LO position, the common brush and the blue/orange wire brush are used, and the windshield wiper motor operates at low speed.
  • When the turn signal and windshield wiper switch is in the HI position, the common brush and the white wire brush are used.
  • In HI position, electric current will bypass a portion of the armature winding causing the windshield wiper motor to operate faster.
  • When the turn signal and windshield wiper switch is moved to the OFF position, the windshield wiper motor will continue at low speed until the park switch outer contacts open.
  • When the park switch contacts open, the windshield wiper motor stops in the park position.
Interval
When the turn signal and windshield wiper switch is in the interval position:
  • The wipers make single wipes separated by pauses.
  • The rotary switch is on the end of turn signal and windshield wiper switch .
  • The length of the pause can be set from approximately 1 to 17 seconds.
  • Length of pause decreases as the rotary switch is rotated away from off.
  • Length of pause increases as the rotary switch is rotated toward off.
While in the interval wiper mode:
  • It is normal to hear a slight click at the beginning of each on/pause cycle. NOTE: When using interval wipers, the first wipe may not occur until after a pause of up to 17 seconds.

May 27, 2009 | 1994 Ford Mustang

1 Answer

Front wipers stopped working


Try to run a ground test on the motor, If it gets power, then you neeed to replace the switch.. if it doesnt run with the ground test, then you need a wiper motor.

May 20, 2009 | 2005 Audi A4

1 Answer

02 audi a4 quattro wipers won't park


If you can move the wiper arms by hand then the 13mm bolt on the motor has worked loose, remove the plastic windscreen trim under the bonnet , close the bonnet , then operate the wiper motor for 1 cycle , switch off , open the bonnet , loosen the 13 mm nut on the wiper motor , push wipers down to the park position , tighten 13mm nut up , close bonnet then check wiper operation , they should now park in the correct position .

Apr 14, 2009 | 2002 Audi A4

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