Question about 2002 Toyota RAV4

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Low Beams keep burning out! Sometime both sides. I replaced approx. 6 bulbs in the past 3 months. All other lights are working fine. No short indicated. 2002 Toyota RAV4

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Hmm, That is rather whacky.

You'll need 2 (two) people, probably, unless you have a Volt-Ohm meter with really long leads.

Attach VOM (20v range DC across low beam circuit (ex: pull the bulb out and push the probes into the low beam slots). Start vehicle. Note voltage. Should be somewhere between 13.5 and 14.4 Volts DC. (If you read neg voltage, you've got the leads reversed!!!). If too high, voltage regulator may be shot.

Have someone rev the engine to, say, 3500 RPM. Measure voltage at that RPM to see if still in nominal (<14.5 VDC) range. This could also indicate faulty voltage regulator.

return everything to normal.

Oh, one other by-the-by: You're not using those HID look-a-like bulbs sold at auto parts stores, are you? They are notoriously cheap and have notoriously short lives.

Good luck.

Start vehicle, turn on low beams. with Volt-Ohm meter (VOM), m

Posted on Mar 05, 2009

  • Rob
    Rob Mar 05, 2009

    I forgot to mention you'll need to have the low beans in the "on" position for the first few steps.

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