2001 Sonata Warning Lights

Discussion in 'Hyundai Sonata' started by Klaus Macon, Apr 21, 2006.

  1. Klaus Macon

    Klaus Macon Guest

    Without any apparent mechanical changes, after a warmup period of maybe
    five minutes,the battery and brake warning lights come on and usually stay
    on. Also at times, the speedometer and tachometer needles drop to Zero
    while the car is still operating normally, then the speedometer needle
    starts working again, alone, while the Tach is still at Zero. At times,
    the 'air-bag' warning light also comes on and stays on. A/C still pumps out
    cool air, but not at full volume for any selected speed. I suspect a loose
    connection, but would like to know where to start looking. Any help is
    appreciated.
     
    Klaus Macon, Apr 21, 2006
    #1
  2. Klaus Macon

    hyundaitech Guest

    Start looking at the alternator. Low voltage can cause any number of odd
    occurrences.
     
    hyundaitech, Apr 21, 2006
    #2
  3. Klaus Macon

    Mooron Guest

    I had an Excel with and instrument panel that did very strange things.
    The turn signals would cause the tachometer to go up and down
    and stuff like that. I was all because of a broken ground connection.

    - Mooron
     
    Mooron, Apr 25, 2006
    #3
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