headlight and interior light issues
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 6 of 6
Cadillac Seville / Cadillac Eldorado Forum Discussion, headlight and interior light issues in Past Cadillac Vehicle Discussion; i have recently notice the following problems. all happening around the same time so perhaps they are related. i have ...
  1. #1
    chatham is offline Cadillac Owners Member
    Automobile(s): 2002 STS
    Join Date
    Jan 2009
    Posts
    73

    headlight and interior light issues

    i have recently notice the following problems. all happening around the same time so perhaps they are related.

    i have noticed that the headlights do not always turn on automatically. sometimes they turn correctly at night but then after a few minutes they shut off. i then have to turn them on manually. just now they turned on in the middle of the day. so this seems that it might be a bad headlight sensor. your thoughts.

    next problem is the center console, radio buttons, hvac, ect do not light up anymore. the dim switch does not affect them. the instrument cluster is working fine.

    thanks

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    barrylee is offline Cadillac Owners Member
    Automobile(s): 1995 Cadillac Seville SLS
    Join Date
    Feb 2012
    Location
    Bentonville, AR
    Posts
    87
    start with checking the fuses and relays, any codes from the puter?

  4. #3
    N*Caddy's Avatar
    N*Caddy is offline Cadillac Owners Master
    Automobile(s): 1997 Cadillac STS (BOSE w/AUX In, Massage Seats, URPAS, "Z")
    Join Date
    Nov 2006
    Location
    Toronto, Canada
    Age
    36
    Posts
    6,405

    Re: headlight and interior light issues

    This is a CLASIC ambient light sensor failure and yes the two are related. If the headlamps do turn on in manual mode then the fuses/relays are fine.
    In the center of the defrost grille locate 2 small sensors. One is the sun load sensor (used for AC) and the other is for the ambient light (used for the headlamps and interior lights).
    First make sure the sensors are clean, but probably that is not your problem as a dirty sensor will be triggered to believe is dark thus the headlamps/interior lights will be on all the time.
    If the sensors are clean then make sure are still in place (sometimes the sensors fall down underneath the grille). Probably is not your problem either as if they fall down will be in a dark place thus turning your headlamps ON all the time (or almost all time).
    The last is the malfunctioning light sensor, you will have to replace it and that is not expensive. If you are really on a tight budget you can find a used sensor (wreck yards) for probably less than $5.
    Then there is always the possibility of a faulty DIM, but I would not go there yet.

  5. #4
    chatham is offline Cadillac Owners Member
    Automobile(s): 2002 STS
    Join Date
    Jan 2009
    Posts
    73
    Thread Starter

    Re: headlight and interior light issues

    ok i have cleaned the sensor with no change. turned car on, of course headlights come on, shined flashlight into sensor and no change. headlights did not go off. so it seams the sensor is bad. i have done several searches for part number of the sensor and cost, do you have any info on that?

    thanks

  6. #5
    N*Caddy's Avatar
    N*Caddy is offline Cadillac Owners Master
    Automobile(s): 1997 Cadillac STS (BOSE w/AUX In, Massage Seats, URPAS, "Z")
    Join Date
    Nov 2006
    Location
    Toronto, Canada
    Age
    36
    Posts
    6,405

    Re: headlight and interior light issues

    50 cents at a wreck yard; maybe $10 at the dealer.

  7. #6
    eyewonder is offline Cadillac Owners Fanatic
    Automobile(s): 2000 STS, 170K Miles
    Join Date
    Nov 2011
    Location
    SE Kansas
    Age
    65
    Posts
    173

    Re: headlight and interior light issues

    Info on the photo-cell: dealer list is $57, 'net prices go from $32-40. Part number is 25673037

    Cheers,
    Steve

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting