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Buick Lucerne Electrical/Lighting

fcoxfcox Posts: 7
Any tips on how to remove the headlamp assembly? I am trying to upgrade the low beams to the Silverstars and can't budge it after removing the three visible bolts. What am I missing? Thanks!


  • I purchased my 06 Lucerne in June 06. The primary complaint I have is that here in Phoenix where the sun shines all the time, and I wear sunglasses while driving I cannot see the dials on the instrument panel. I have talked to the dealer, emailed Buick and complained to anyone who will listen.
    Buick's reply to my email in August said I could expect a fix in November 06. November came and went - no fix. A reply to another email in late November said I could expect a fix in early 2007. Does anyone else have this problem?
  • noahmannoahman Posts: 3
    edited August 2015
    wwwelch. I am a Buick dealer in New Jersey and have experience your problem first hand. There is however a fix that has been released. The fix requires replacement of the instrument panel. Your local dealer should be able to look up the repair.
  • Correction; the problem requires replacement of the instrument cluster not panel. dgale
  • eecneeecne Posts: 13
    I just bought a CXL. Does anyone know how to use the Valet Lockout feature?
  • My Lucerne is back in the shop for the second time with a dead battery. They replaced the starter last time, but it seems more like something electrical is draining the system. Anyone here of any problems popping up on the the year old car?
  • cxs2006cxs2006 Posts: 8
    My 2006 Lucerne cxs has been to the dealers 3 times. The battery goes dead if it sets for 4 to 5 days. Dealer has been going out of their way to fix it but no results so far.
    It goes in Monday April 2. These cars are supposed to have a low battery protection circuit. Good luck with yours.
  • eecneeecne Posts: 13
    Has the dealer tried just replacing the battery or altenator?
  • cxs2006cxs2006 Posts: 8
    I really like my 2006 lucerne cxs, but the battery runs down if it sets for 4 to 5 days. Has been to dealer 3 times already but still not fixed. They have been calling GM but no results so far. Its going in next week again.
  • cxs2006cxs2006 Posts: 8
    No, I asked them to replace the battery but the dealer says it checks out ok. These cars are supposed to have a battery run down protection device. They haven't replaced it either.
  • eecneeecne Posts: 13
    Yes, I know it has the run down protection. However, the battery can have a dead cell which would result it not operating underload properly. Go to autozone with the car and have them run a load analyis on your battery, its a free service.
  • cxs2006cxs2006 Posts: 8
    The car is only 4 months old 2045 miles, but good idea I'm off to Autozone. Thanks..
  • cxs2006cxs2006 Posts: 8
    Well April 09, my Lucerne may be fixed. The dealer installed a new battery and downloaded new software to the PCM and the Door lock controller.
    I have been taking the battery voltage every 12 hours since Sat. and it seems to be holding at around 12.52 v.
  • imidazol97imidazol97 Crossroads of America: US 25 & US 40Posts: 19,787
    Did you get the battery checked at Autozone?
  • cxs2006cxs2006 Posts: 8
    No I decided this is the dealers problem. Don't want anyone else getting involved. I believe it is fixed now..
  • imidazol97imidazol97 Crossroads of America: US 25 & US 40Posts: 19,787
    More power to you. I was curious if the battery was defective or if there was something draining it.
  • cxs2006cxs2006 Posts: 8
    I might not ever know if the battery was defective. Because they also downloaded new software to the pcm. I insisted they change the battery. maybe that's why they did it. I asked them to charge the old one and set it on the bench for a week and see what the voltage was. If they do that and learn anything I'll let you know.
  • imidazol97imidazol97 Crossroads of America: US 25 & US 40Posts: 19,787
  • Mom had the same rundown thing happen when she first got her Lesabre. It seems that she thought she was turning it off when in fact, she was turning it to accessory. This ran down the battery after a day or so. Turning it to accessory over rode the rundown protection. She is now aware of this and it has not happened since. I believe the Lesabre and the Lucerne use the same type key swith.
  • imidazol97imidazol97 Crossroads of America: US 25 & US 40Posts: 19,787
    Does that mean she was leaving the key in the ignition after she left the car?
  • Yes, It was in the garage. The switch has a different feel to it and it was much easier to turn to accessory that her previous car.
  • I have the same complaint over not being able to see the speedometer in bright sunlight. Dealer says I have the new bolder IPC, but it does not solve the problem. I attached a small metal housing enclosing a 4 watt bulb from a 24 volt Malibu patio light set to the top of the steering column assembly. It plugs into the accessory outlet. It works great, but it looks terrible on a new $30K automobile. At least I can now see the speedometer in daylight--even with sun glasses on which is a major safety concern for me. Buick needs to come up with an improved instrument panel cluster lighting system to resolve this.
  • This is strange. They make a buzzing sound instead of the chime. Will go back to the dealer, but I am curious, did anyone else have this problem?
  • The fuel quantity sensing and display indicators (fuel gage and DIC Fuel Range readout) have been significantly inaccurate in my 2007 DTS since the vehicle was purchased a year ago. For example: the fuel gage indicates 7/8 to 3/4 when the tank is fully topped-off; when the vehicle is started, the fuel gage indicates a completely random level which is never the same as the level existing when powered down; while maintaining constant speed and throttle setting, fuel quantity will change rapidly for no apparent reason. In addition, the DIC Fuel Range readout shows more or less range remaining consistent with the erratic gage readings. The dealer has replaced the tank fuel level sensor but the problem remains. Any similar experiences? Suggestions?
  • When set to Automatic, the day time running lights fail to come on within a reasonable time. I've had it to the dealer and they say it's running to specs. I cannot believe that this is how Buick wants these things to function. I drive west every morning, and the sun is streaming into the car from the rear window, making it impossible to see anything on the dashboard, but until the sun is overhead, the headlights continue to stay on, and the dashboard lights are dim. I now travel with a flashlight to shine on the sensor so that the headlights will go off an the running lights will kick in.
    I've noticed that the sensor reacts to a solid blue sky as if it were dark and leaves the headlights on, but an overcast (white cloudy) sky as if it were light and turns the day time running lights on. I am not unfamiliar with how these things should work, and never had this problem with previous cars, but I'm fed up with the dealer telling me this is the expected performance.

    Anyone else having these issues?
  • vic10vic10 Posts: 188
    Can't speak for the Lucerne, but my 300C operates the same way. I'm driving home with sunglasses on and the headlights come on. But since I have real gages, it's not much of an issue....
  • jef4jef4 Posts: 11
    You are correct. The same thing has been happening to my Lucerne. One morning I almost called the Buick garage to tell them of the problem when the lights finally came on 20 minutes later.
  • rmellormello Posts: 11
    I am having the same exact problem with my 2006 Lucerne -purchased new. I have complained to Buick several times, by emails, telephone, letter to President of Buick, my dealership but no results. It takes twelve miles of driving for my fuel gauge to correct itself. Needless to say I am frustrated. Buick tells me this is normal and can take up to 10 miles of driving to correct itself. If -according to my dealership- I want an accurate reading before I start a trip, I should find a level spot and pull over and restart my engine.
  • rmellormello Posts: 11
    I have seen many online complaints about this problem. I have an 06 Lucerne, same issue.
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