Question about 1999 Volkswagen Passat

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I have a 99 1.8t Passat with multiple electrical failures

AC and fan do not work, wipers do not work, headlights do not work, directional signals do not work, Checked fuse panel and all seem fine. All failures started at same time. Car starts and drives normal. Thanks

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  • corradobuff Nov 07, 2008

    i have the same problem, no signals wipers or heater control, but my headlights work, i can get high beams but no signal, and i cant get anything out of the wiper stalk, i have new ones on the way, no idea for the heater fan....... i heard a resistor are those hard to replace?

  • Anonymous Dec 17, 2008

    I have the same problem on my 2000 Passat. I'll start the car and turn signals, head lights, and heat do not work. After restarting twice the problem seems to clear?

    What was the fix? ... thanks for you help!!

  • teelfish Dec 23, 2008

    I have a very similar problem. I had just finished installing new wiper blades and went to try them out and my wipers, heallights,ac, and blower no longer work. I checked the fuse box and everything seems ok. Does anyone know what would cause all these things to fail at once?

  • mike1020 Feb 06, 2009

    The horn, directionals, blower fan, headlights all stoed working at once on my 99 passast wagon. all the fuses checked out to be working fine. People keep talking about a main fuse or a multi swich in the steering colum, any help will be apprecaited


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The ignition switch is faulty, typically the contacts burn for the 501 power supply circuit. That is the circuit that provides main power to head lights, wipers blower motor and a few other accessories.

Posted on Dec 29, 2008

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Definitly the ignition switch. will replace mine this weekend!!! thanx,'dub j' !!!!!

Posted on Jan 07, 2010

  • naknudson
    naknudson Apr 06, 2013

    my 1999 jetta has same problem replaced ignition switch and piece it plugs into didnt help.


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Strange that they all failed at once. The headlights and directional signal could both be of a common cause - a faulty column combination switch. They're known to fail on the A4. Can you pull back on the turn signal stalk and have the high beams come on? If so, but the low beams don't work, then your stalk switch is bad. A new one is about $150 and installation involves removal of the airbag and steering wheel. Not a difficult job, but if you're unfamiliar with airbags you should have it done for you. Replace that and see if it fixes both the lights and the turn signals. If the signals still don't work, you have a dead signal relay (also common). It's built into the hazard switch on the dash. A new one is about $40. You have to slide the radio out of the dash, and reach inside to push up on the bottom of the switch to free it. Then it just pulls straight out and off of its harness. Plug the new one in and put it back in the dash, push the stereo back in, and you're done.

The wiper failure could be the other side of the column switch - that's less common but it does happen. I'm not sure what they run offhand, but you can get them at Replacement would be done at the same time as the combination switch, as they're screwed together.

The AC and fan failure could be many things, and that is best diagnosed by a shop.

Posted on Oct 21, 2008

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Good answer Jeremy. I agree about the ignition switch/blower motor. Common in many vehicles!

Posted on Dec 30, 2012

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This are the FUSE and RELAY number SLOT!
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