Question about 2004 Lexus RX 330

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Left low beam headlight inop. tried bulb and checked fuse. both OK

No power to left low beam headlight

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  • mburgess990 May 26, 2009

    tried new bulb, then looked at fuses in fuse box underhood, left side. saw 2 fuses for low beams,2 fuses for high beams. no blown fuses. probed low beam bulb harness connector. have ground on both wires. no power. is there some sort of module to put power to the left low beam that I'm overlooking? I don't have wiring schematic.

  • mburgess990 May 27, 2009

    not available for inspection at this time. give me possible solutions for vehicle with or without auto headlights. thanks.

  • mtous2162 May 11, 2010

    Is your car equiped with automatic headlights?

    (the kind that go out during the day and turn on at night...)



    How about daytime running lights?



  • mtous2162 May 11, 2010

    Please clarify for us:

    You tried what on the bulb?



    Did you replace the bulb?



    Did you check all the fuses? (there are normally 4 15 amp fuses for the headlamps in all Toyota and Lexus vehicles...)



    Let me know...

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  • Lexus Master
  • 358 Answers

Check fuses under hood there should be seperate fuses for each side.

Posted on May 27, 2009

  • Mike Vincent
    Mike Vincent May 27, 2009

    it shouldn;t matter if it has auto lamps or not.

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1 Answer

High beams work for both lights, 1 low beam does not


Check for power with a test light with the light connected. If you have power then its the ground. If no power then you will need to trace the wire back to find break. As I recall they did have seperate fuse for left and right headlight high & low beam. Also did you get a defective new bulb?

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My Chrysler 300C left headlight low beam won't light up . I've brought new bulbs and still the left low beam light did not glow! I swapped bulbs around and the left bulb that wasn't working now glowed in...


Check the socket or connections that supply power to the bulb Sometimes the contacts can become corroded. Also, a loose or corroded ground wire can cause a bulb to not work or glow dimly.

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I have a 2006 civic SI. DRL indicator is on, driver side low and high beam ok. Passenger side low beam ok but DRL and hi beam not working. Any help is appreciated.


When either the high or low beam light is out in either side, DRL (daytime running lights) indicator will come on. When one bulb goes out, that's a clue the opposite bulb will burn out soon, so its best to replace both bulbs. If it was a fuse issue, both left and right side would be out. If driver side is OK but passenger side is not, then its a bulb issue. A 2006 Honda civic takes 9006 (HB4) low beam bulbs and 9005 (HB3) high beam bulbs. Cheapest is online from Walmart site-2-store. After procuring, wear latex, vinyl, or ANY gloves to keep your (corrosive) oil skin from coming in contact with headlight glass bulbs. Your skin oil will chemically react and cause shorter life span on glass bulbs. Instruction don't tell you this, so you handle with your hands, then need to replace bulbs 3 years later instead of 5 years (or more) in the future. With gloves on, pop the hood and look behind each headlight. Turn counter clockwise to unlock headlight bulb holders. Its a quarter to half turn to unlock bulb holder lock. Replace one bulb at a time so you don't confuse high beam from low beam. The wire has a tab you need to lift to pull out & disconnect wire connector. You might need a slim narrow-**** (NOT phillips) screwdriver to lift the tab; or use your house key. Snap the wire connector to the new bulb, then twist into headlight housing to secure bulb holders, then move on to the next bulb to repeat the procedure. Pict below, 9005 high beam is on the left, 9006 low beam is on the right. Handle by grasping the plastic base, not the glass bulbs. The raised potrusion on the bottom center is where the tab locks onto wire connector. Replace all 4 bulbs now, but in the future, its likely the low beam will wear out before the high beam. In the future, replace only the pair, not all 4. The factory installs inferior bulbs that go out sooner, hoping you'll take to dealership and they ******** you with higher parts-n-labor fees. As opposed to Walmart online site-2-store, it would cost you AT LEAST triple in parts & labor from dealership to replace all 4 headlight bulbs :-(
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1 Answer

Left Low Beam Headlight won't come on!


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Daytime Running Lights Inoperative 2002 Toyota Camry


[Information] For a 2002 Toyota Camry, the Daytime Running Lights (DRL) operate utilizing the High Beams (inner Lamps closer to the center of the vehicle front) at a reduced power.

[The troubleshooting process:] Review the Owner's Manual and ensure the test configuration matches the following criteria:
1. According to the 2002 Toyota Camry Owner's Manual (Check your Owners Manual):
"The DRL system will make your headlights come on at a reduced brightness when:
The light switch s in the "DRL" position.
The ignition is on with the engine running.
The headlight switch is off.
The parking brake is released."


2. Set the Test Conditions according to Step 1 above.

3. Check the headlight bulbs to ensure they are not burned out. If one burns out, there is a fair chance that the other would have burned out at the same time. Replace as necessary. In this case, if the high beams operate, the DRLs should also operate.
4. Test the system, ensuring the step 1 conditions are set. (Engine running, Multi-function Switch on Turn Signals in "DRL" position, headlight switch off (repeating what the manual says -- it should be obvious that in the "DRL" position, the headlight switch should be off / do not have the switch positioned to "High Beam"), and the Parking Brake "off").
5. If DRL lights do not work, check the engine compartment Fuse and Relay Box. there is a 5 Amp DRL fuse -- replace it with the spare. Test (step 4).
6. If it does not work, swap around or replace relays -- there are three (3). Any one of them could be bad (stuck or burned out). Test (step 4).
7. Other less likely possible issues could be that the Multi-function Switch is broken or a connection / wire is broken. [Beyond the scope of this process.]


My problem was that the test configuration did not have the engine running and parking brake off - Step 1. Problem solved with much thought, repetitive tests on the vehicle and going back to the basics -- what does the Owner's Manual say and where are the applicable fuses and relays located?

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2 Answers

2003 GMC Envoy low beam head lights will not come on. The bulbs are not blown, fuse's ok, no power coming to the head light connector. minimal power to the fuse compartment with fuse removed. 9 to 10...


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1 Answer

Passenger side headlight assembly inop. high and low beam bulbs good. fuses good. is there a relay? is so where is it


If only one headlight isn't operative, your fuse and bulbs are ok, then check for proper grounding at the headlight assembly.
There should be a black wire that comes from the headlight assembly and is attached somewhere at a good grounding point.
You can have power to the lamp, but if you don't have a solid ground connection, it won't light up.

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1 Answer

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There are relays that control the headlights in a fuse box under the hood near the firewall.. There's also a fuse box underneath the dash on the driver's side, but can't remember if it's on the underside of the dash or beside it

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