Power electrical windows not working properly

Tiny
VINCE11
  • MEMBER
  • 2002 AUDI A4
  • 2.0L
  • 4 CYL
  • 2WD
  • MANUAL
  • 110,000 MILES
I have the vehicle listed above B6. My problem started a couple of days before. Some times my windows wouldn't go down from the button on the door but after some miles running it will start working again until 4 days ago it stopped working forever. If I try to open or close all windows from the master power buttons it will work perfectly and only driver window will not work. So I can control passenger's windows without any problem but not mine cant go down or up. And if I try to close or open the windows from the passenger button it will not work too. They have gone all on the same day. Wiring, fuse, window motor they are all okay. But still can't find the problem. I'm thinking maybe any delay/relay may have gone wrong but still can't find all relays connected for the windows. I hope that anyone here can help me.
Saturday, October 3rd, 2020 AT 12:11 AM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
Hi,

There are four fuses and no relay related to the power windows. See pic 1. Make sure both are good and have power both to them and out from them. Remember, a fuse can look good and be bad.

Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Pics 2 and 3 show the entire wiring schematic for the power windows. Note that I am making the assumption that this is not a convertible. Also, I highlighted the power supply to all window motors/switches. What is a bid difficult to understand is that this. Power goes to the motor before the switch. The switch provides a ground path based on your selection which actuates a motor. What I would start with if the fuses are good is to see if power is making it to the motors.

Next would be to check grounds, but what you described doesn't make sense that it would be a grounding issue because there are separate grounds for each window.

If you find there is power to each motor, then I would suspect it is a bad main switch (driver's side).

Do these checks and let me know what you find.

Joe

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Sunday, October 4th, 2020 AT 5:17 PM
Tiny
VINCE11
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Really thank you. I will check it today.
It is not a convertible is a sedan model.
The motor should work just fine cause if I try to go up and down for the passenger's windows from driver button it work but if I try to go up and down for each window on individual button it doesn't work.
Ex- from driver side I can control all 3 windows of passenger's but I cant control the driver window. And this is the same for passenger windows they can be controlled from driver button but not from their individual button.
I will try to see the fuses that you say hope I find something.
I haven't seen the wires that are between driver door and car body someone told me to check that cause that control all the power of other doors too.
Thank you.
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Wednesday, October 7th, 2020 AT 1:42 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
Hi,

You are very welcome. Let me know what you find or if you have other questions. I can't be sure, but I have a feeling that it may be related to the driver's main switch. Testing will let us know.

Take care,
Joe
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Wednesday, October 7th, 2020 AT 7:01 PM
Tiny
VINCE11
  • MEMBER
  • 7 POSTS
Hello, I checked all the info's. First fuses are all good and power goes to fuse without a problem. Power is going to motor that's cause feom main switch I can control all other windows but not the driver window. So that means power goes to the motor. Now I will go to buy a new main switch driver side so I can see if the problem is with the driver switch but what I can't understand is if I can control the other windows from main switch but can't control them from their personal switch why the problem should be with main switch? Does it provide power for other switches? I didn't understand that sorry.
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Tuesday, October 20th, 2020 AT 11:23 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
Hi,

I need to know what you mean by the following:

"Power is going to motor that's cause feom main switch I can control all other windows but not the driver window so that mean power goes to the motor."

If power is going to the motor from the switch and it doesn't respond, then the motor is bad. If the switch has power but doesn't send it to the motor, then the switch is the likely issue.

Do you mean there is power from the switch to the driver's side window motor? Did you check for power at the motor as well?

Let me know. Also, feel free to ask questions if you have any.

Take care,
Joe
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Tuesday, October 20th, 2020 AT 7:02 PM
Tiny
VINCE11
  • MEMBER
  • 7 POSTS
I'm trying to understand it sorry maybe i'm not a professional.
I think motor is good for the only reason cause for example if I try to send down or up the passenger window from main switch(driver side) it work but if I try to do this from passenger switch button it doesn't do nothing doesn't work.
Not all switches (main switch driver side and passenger switch buttons at all doors) have a little light on button it is lighting up that mean it get power or I am wrong?
I'm trying to find how to see if power goes to motor but still can't find the positive and negative cause it have so many pins.
I will try again today if I cant find I will send to an auto shop (but here are just 3 of them and usually they don't have time to check)
I am really thank full to you for your time.
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Thursday, October 22nd, 2020 AT 5:38 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
Hi,

No problem. You could be a professional and this would still be difficult.

If you are getting power to turn on the light, then yes there is power. At the motor, I don't have a pinout. However, if you look at the schematics I attached, try to locate the wires by color at the motor.

Let me know.
Joe
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Thursday, October 22nd, 2020 AT 5:37 PM
Tiny
VINCE11
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I tried to add power 12v dc directly from a voltage apparatuses that support 15 v and up to 3am and yes it click I tried to see if power comes from cables in same case it got power example pin 3 was 0v and pin 5 was around 6v the others was 12.4v.
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Saturday, October 24th, 2020 AT 6:23 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
Hi,

Check to see if there is power to pin three when you actuate the window switch.

Let me know.
Joe
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Saturday, October 24th, 2020 AT 11:10 PM

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