Question about 1999 Pontiac Grand Prix

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DLR's not on

Started my vehicle up one morning and everything was working ok. My DLR's came on like they always do and seemed to be working. I pulled into a parking space that had reflective glass and noticed that my DLR's were not on. I checked the fuses and the emergency brake and everything was ok there. The fuses were not burned out or anything. Nothing I have tried so far has worked. I took it to my Car dealership and they said that they were not supposed to come on unless it got darker or foggey. That is totally wrong. My DLR's have always come on when I started my car and stayed on until the regular headlights came on at dusk or until I turned my car off. Can anyone out there please give any suggestions. I can't get any satisfaction out of my dealership. Thank You.

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  • brazb May 31, 2008

    DLR's when out. I replaced the lights, checked all the fuses.and still nothing. They are the low beam which come on once it gets dark. The manual states there is a light sensor at the top of the instrument panal that controls these lights. can't seem to find it. Ther is also a Low Beam relay in the under hood fuse box. I planto check that tomorrow.

  • Anonymous Jul 20, 2008

    where is the dlr sensor located ?

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  • Master
  • 291 Answers

Have you tried replaceing your lights? i believe on some cars, the running lights are actually the high beam filament with a low voltage running thorough it, to save the filament. check them, but dont buy it if it dosent need it. check your electrical connections to the lights. but if they were loose, then your light wouldn't come on at all, even at night. i guess it depends on how its all set up. if you have seperate DLR's or ones built into the headlight.

Posted on May 15, 2008

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Posted on Jan 02, 2017

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95 JEEP GRAND CHEROKEE HIGH BEAM INDICATOR NOT WORKING


ok, just the Highbeam cluster lamp
the cluster has fuses test them first?
DLR is canada, are you there,or car is? for canada market?
(unique wiring there) we are USA forum and cars, and wiring
ever see the free schematics, posted here 100s of time?
ZJ jeep is its name , as seen here, under wiring.
http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service

DRL , is a problem of many cars, it makes that which was very simple now complex. On many the wire pins like to melt on the DLR module. (looking first, is always a good idea , for obvious damage)

Chapter 8w covers all wring, best is to have the book or PDF on it.
DLR /Dimming module.
Page 8w-40 -9 clearly shows, the Cluster hi beam lamp
has 2 pins, is ground G100 , the runs many things there.
the turns cluster indicators, go dead with g100 busted.
pin 1 for the HI beam indicator goes to the DLR/dim module
so 8w-44-13 shows (and next pages) show it all
i invite you to look and read. it
first item of interest is fuse 24, powers this modules logic
8w-50-10 is head lamps with DRL, called front lighting, chapter.
says right there"canada only"
Fuse 19, is also needed.
to see that page above, and all of 8W50 (front, lites, canada)
you need Adobe Reader installed, to read PDF books.

my guess is fuse 24, did you check all fuses first.
if the DRL works, and id does run the highbeams BTW

if the cluster bulb is good
an no 12vdc to it, as you said ops you said DLR are dead
well sure.
the DLR must have all imputs good for the module to work
ill list them
hand brake switch working, is it?
brake failure lamp switch working? page 8w-40-7 see it?
the later switch is DRL only switch on MC.
put in a usa switch and dRL goes dead.
there is more, but ill stop
check all pins on the DRL modules of fall fuses are good
to see that all inputs are good
if they are, the Hi-beam indicater wire there goes to 12vdc.

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