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1999 Volkswagen Golf Question: Flasher intermittentently doesn't blink - light stays on



Lanwanman, 2.0L 4 Cylinder, Aragon, GA, November 28, 2009, 16:06

The Golf recently developed a problem where the flasher/turn indicator occassional just stays on - no blinking or noise. Turning it off and on again sometimes gets it blinking, sometimes doesn't.
Do I replace the flasher unit, and how do I do it?

1 Answer
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  • Answer #1

    November 28, 2009, 21:42

    You should find this helpful.

    Vehicle Application: 1999 Volkswagen Jetta GL 2.0L, Eng Des AEG

    Customer Concern: No turn signal or hazard flasher operation.
    Tests/Procedures: 1. Remove the hazard switch assembly to gain access to the wiring harness.

    2. Check pin #5 for good ground.

    3. Check for voltage on pins #4, #6 and #7, with the ignition in the on position and headlights selected on.

    4. Select hazard on and verify that a pulsed voltage is available at both pins #3 and #2.

    5. Select right and then left turn signal from the turn signal switch and verify that pulsed voltage is available at pin #1 in each position.

    6. Jump 12 volts to pins #3 and #2 and verify that all signal lights are illuminated.

    7. Jump 12 volts to pin #1 and verify that left and right turn signal lights illuminate as the turn signal switch is changed from left to right signals.

    8. If tests 2 and 3 check OK, and tests 4 and 5 fail, the hazard switch is faulty and must be replaced. Tests 6 and 7 verify that wiring from the hazard switch to the turn signal switch and signal lights is intact.
    Potential Causes: Defective Hazard Flasher Switch/Relay Assembly
    Turn Signal Switch

    Tech Tips: The turn signal and hazard flasher relay is integrated into the hazard flasher switch. Failure of the relay will cause both the turn signals and the hazard flashers to stop operating. If the relay is faulty, the entire hazard switch assembly must be replaced.

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  • Reply

    Lanwanman, December 02, 2009, 14:37

    Thnaks backyard tech.
    I was able to get the Hazard unit out of the dash.
    Simply sprayed connectors and the unit itself with WD-40 then tested and it is working beautifully. Put back together and been fine last 4 days.

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