weird electrical

[fordstang99]

Hello, this is my first post here. About 5 months ago i purchased an 04 audi a4 quattro with 141,000 miles but with service records to go with it all. Been a great car but yesterday the power shut off to it all together and came back in about 30 seconds to a minute...then the head lights wouldn't turn on automatically, I had to turn the fog lights on and then the head lights came on...when the car shut off the date and time reset of course. So when im on my way home i goto arm the alarm it has an aftermarket avital alarm which i did not put in...anyway the remote start works and when you do the remote start the doors unlock automatically...when i try to lock the car with the alarm it will lock it but when you goto just unlock the car with the alarm it wont unlock...no sound...but the lights flash

any ideas? the car has been working fine since i got it..now this happened yesterday

[rocket1420]

Sounds like a bad ground. Open the hood and check your battery terminals.

[fordstang99]

I wiggled some of the battery cables and nothing..anything else? Thank you for your reply

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[rocket1420]

I wiggled some of the battery cables and nothing..anything else? Thank you for your reply

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Hopefully someone else will chime in. I'm not very familiar with the electrical system on these cars, and chasing gremlins can get old fast.

When you say you wiggled them, do you mean that they moved around on the terminals? Are the terminals nice and clean?

Make sure the valve cover ground is good. Disconnect it and clean it with some steel wool or similar on the valve cover and the terminal. You can see it in this pic between the front two coilpacks.

[fordstang99]

Will check in the morning if its not pouring...i do have the 3.0 v6

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[fordstang99]

Wow...easily enough i disconnected the battery for a few min and all is good now


Thank you

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[MikTip]

Check for water in the ECU box