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Audi 2002 A3 Hazard Switch/Blinker problem

I had a strange intermittent buzzing wurring type of noise coming from the the proximity of the dash hazard switch, this went on for several months. Sometimes noise would not happen for several weeks and then return.
The problem became serious when along with the noise returning my left and right blinkers stopped working. I took the car to an auto electrician who said that it appeared to be the hazard switch. A new hazard switch was installed and the problems disappeared for a few weeks but now the buzzing wurring noise is coming from the same spot again. The blinkers are still working fine at this stage. Could you please help. My husband was trying to find an electrical wiring diagram, to see if he could trace the problem. Any assistance would be greatly appreciated.

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 1498 Answers

SOURCE: YJ Blinker Relay

Hi there,

Both the hazard and the blinker flashers are located on the fuse panel. They pull straight out.

When both turn signals fail, the cause may be a blown fuse, a faulty flasher, a broken turn signal switch or a bad connection.

When you try the turn signals, do they light up and not blink?
-If so, probably the flasher unit.

When you try the turn signals, does nothing happen?
-Check the fuse

Let me know if the problem continues after replacing the flasher.


Posted on Aug 31, 2008


SOURCE: Blinkers still have issues after replacing relay

I replaced the hazard switch relay, still no good, and replaced all the bulbs

Posted on Sep 29, 2008

  • 65 Answers

SOURCE: 95 ford explorer xlt, all

Go to the fuse box and play with putting in out and then back in. If that does not work go to the light from the out side and go through it that way, Some time when they replace things they put way to much of the gunk stuff and it just keeps sliding out rather then staying in.

Most of your relay module would be placed under the hood. the hazard lamps are 21 fuse/cb/relay loc. and fuse amp rating is 15 amp


Posted on Dec 16, 2008

  • 150 Answers

SOURCE: blinker stopped working, but the hazard lights still work - I think it's a blown fuse but how and where do I fix the fuse

There is 2 different flashers. One flasher for the turn signals and one flasher for the hazards. If you turn on the turn signals and the turn indicator on the dash lights up but doesn't blink, then most likely it is the turn signal flasher that is bad. Good luck.

Posted on May 29, 2009

  • 27 Answers

SOURCE: Blinker is being CRAZY!

you need to replace the blinker lever switch the whole unit take it to a dealership if you can't replace it yourself and be prepared they cost an arm and a leg but if you can fix ityourself check out a local junk yard for amatching car to see how it comes apart b4 you tear into yours.. but also could be the flasher located deep under the driver's side

Posted on Jul 02, 2009

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