2005 Buick Park Ave Twilight Sentinel issue

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Thread: 2005 Buick Park Ave Twilight Sentinel issue

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    6.0 Liter L76 V8 GMFreak8's Avatar
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    2005 Buick Park Ave Twilight Sentinel issue

    I recently purchased a 2005 Buick Park Avenue Special Edition. Tonight was the first time I've actually driven it in anything except day time. I was expecting the headlights to come on automatically when I started it up. Instead the only thing that came on were the daytime running lights when I put it in gear. I have to manually pull the headlight switch to get the lights to come on.

    The twilight sentinel switch is in the max position and I've tried adjusting that to no change. In addition to the twilight sentinel not working, the DIC, radio, and climate control won't dim. From previous experience this means the car thinks it's day time out and it doesn't need to dim them. The only control I have over the brightness of the interior lights is the gauge lighting that I can control by twisting the headlight knob.

    Does anyone have any clue as to how to trace this or what may be the issue? Any input would be greatly appreciated. Thanks, Kyle.

    Dream Vehicles: 88-91 Reatta, an early 80s Buick Wagon, or any 79+ Riviera
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    Re: 2005 Buick Park Ave Twilight Sentinel issue

    It might just be a bad sensor - the one you see around where your dash and windshield meet. But it got me thinking - what is "Twilight Sentinel". Is it something special?
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    Re: 2005 Buick Park Ave Twilight Sentinel issue

    Quote Originally Posted by GMFreak8 View Post

    The twilight sentinel switch is in the max position and I've tried adjusting that to no change.
    The sliding on the sentinel switch adjusts the time the headlights stay on AFTER the ignition switch is turned off so you can get from your car to the house door with some light from the headllights in the area.


    Quote Originally Posted by GMFreak8 View Post

    The only control I have over the brightness of the interior lights is the gauge lighting that I can control by twisting the headlight knob.
    If the brightness can be changed then you are in night mode and the headlights are on (or parking lights).

    I wonder if your car has the method for turning off the headlights by pushing on the parking light switch. My leSabre has a separate switch button for headlights and parking lights. If that button were depressed and it turns off the headlights for driving in areas where no lights are wanted, your headlights should be completely off instead of DRLs working when car is in gear.

    I do know it's easy to use the on and off switches when one gets automatic lights. The salesman was really emphatic about not using the manual switches because it's easy to get things mixed up.

    Do you have a manual for your car in the glovebox?

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    Re: 2005 Buick Park Ave Twilight Sentinel issue

    Quote Originally Posted by GMFreak8 View Post
    I recently purchased a 2005 Buick Park Avenue Special Edition. Tonight was the first time I've actually driven it in anything except day time. I was expecting the headlights to come on automatically when I started it up. Instead the only thing that came on were the daytime running lights when I put it in gear. I have to manually pull the headlight switch to get the lights to come on.

    The twilight sentinel switch is in the max position and I've tried adjusting that to no change. In addition to the twilight sentinel not working, the DIC, radio, and climate control won't dim. From previous experience this means the car thinks it's day time out and it doesn't need to dim them. The only control I have over the brightness of the interior lights is the gauge lighting that I can control by twisting the headlight knob.

    Does anyone have any clue as to how to trace this or what may be the issue? Any input would be greatly appreciated. Thanks, Kyle.


    The "twilight sentinel" feature was an extra-cost option on my 1999 Corvette. The feature can be turned on or off by using the DIC, according to instructions in the car's owner's manual. There is also a "parade mode" which keeps the brightness at its fullest level for the dash lights, radio display, HVAC display and the DIC.

    Read your owner's manual (or buy one and read it) and determine if the feature is activated.

    Good luck.

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