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Ford Crown Victoria/Mercury Grand Marquis Electrical/Lighting

245 messages,  Last post on Mar 25, 2013 at 6:34 PM

You are in the Ford Crown Victoria/Mercury Grand Marquis Forum.

What is this discussion about? Ford Crown Victoria, Mercury Grand Marquis, Lights, Electrical, Sedan

Messages Page 22 of 25

#211 of 245 Preplexing situation by bigrich52

May 22, 2012 (10:51 am)

07 Grand Marquis
 Door locks, rear defogger, interior light and alarm work intermittently. Checked wiring in all 4 doors nothing appears to be broken. No response when jiggled. When it rains all system work.. almost like a short of some kind but unable to locate it. I have played with the actual locking mechanism by locking and unlocking to simulate door opening / closures i did get everything working for a short time.. might have been a fluke. Can it be a computer module that works intermittent? If so what is the name of this module that controls before mentioned. Is there a home test that can be performed to single out the problem..?

#212 of 245 Re: 95 grand marquis lcm [ecoautomotive] by bigrich52

May 22, 2012 (10:58 am)

Replying to: ecoautomotive (Mar 26, 2012 6:26 pm)
I just did a manual reset to my car that i believe also pertains to your yr as well.. Disconnect neg from battery. Then take the black negative cable and touch your positive side this will not short the car but it will clear the memory.. Hope this helps

#213 of 245 Re: 95 grand marquis lcm [bigrich52] by euphonium

May 22, 2012 (11:18 am)

Replying to: bigrich52 (May 22, 2012 10:58 am)
I'm with you on disconnecting the Negative terminal, but I hesitate touching the Negative cable to the Positive post on the battery. Would this "touching" cause an unwanted spark and maybe blow the dio plate in the Alternator?

#214 of 245 Re: 95 grand marquis lcm [euphonium] by bigrich52

May 22, 2012 (2:13 pm)

Replying to: euphonium (May 22, 2012 11:18 am)
I learned this trick today at the auto shop.. Having an issue with ac control box.. Mechanic removed the wire and did just what i had stated.. nothing ill came of this except i had to reset my clock.

#215 of 245 Re: dom lights [fordgirl4] by selma2

May 26, 2012 (8:34 pm)

Replying to: fordgirl4 (May 06, 2010 9:30 am)
hello,i havent experienced the headlight problem yet,,,but i dont drive it much ,only 43,000......what is happening with my car,is the fuel pump went ot at 32,000....then it went out again at 38,000....i am still waiting for the shoe to drop on the 3rd fuel pump with only 43,000,,,,the pump is inside the fuel tank,,,a design only a moron would do.....so it is quite a job,around 600.a pop,,,my car is a 2003 marquis ls....as far as the headlights are concerned,,,,ford has always had weird electrical problems with their cars as far back as the early 1950s....the lincolns and the edsel were nightmares......selma2 ndorfin51yahoo.com

#216 of 245 Re: 2000 Grand Marquis Headlights, Parking Lights, buzzer, hazards not working [yooper88] by chorusofone

Jun 26, 2012 (4:28 pm)

Replying to: yooper88 (Apr 04, 2011 5:18 pm)
I am having the same problem. What did you have to do to fix yours?

#217 of 245 Re: 2004 Grand Marquis Headlights/Cornering Lights [dudat] by zeigler424

Jul 08, 2012 (10:35 am)

Replying to: dudat (Jun 13, 2010 5:22 pm)
I have this exact same problem my friend with my 2005 Mercury Grand Marquis GS. the lights come on when they want to and i will hear it click and come on when they finally do. Also my air does the exact same thing as yours only blows out of the top and im getting frustrated. Can you please help me and tell me what you did and replaced to get rid of these problems. Thanks

#218 of 245 Re: 2004 Grand Marquis Headlights/Cornering Lights [zeigler424] by raszman

Jul 08, 2012 (10:51 am)

Replying to: zeigler424 (Jul 08, 2012 10:35 am)
mine was due to the right front fender being replaced during paint job and they failed to tighten a ground wire that attaches to the fender inside.

#219 of 245 2002 Grand Marquis no turn sigs or hazards by 1screwleftover

Sep 24, 2012 (6:47 pm)

Problem started with no left turn signals; found blown fuse (15A) in position #16; replaced fuse and turned on left signal that immediately flew new fuse; also noticed no mirror compass, night dimming or interior temp controls; put 2nd new fuse in but still no turn sigs and hazards, fuse did not blow this time; started engine but could not shift from PARK; thought about it and removed the 2nd fuse (still good) from position #16 and it shifted right out of PARK; assume a short in some switch, probably the turn signal switch; anyone had this issue?

#220 of 245 Mercury Grand Marquis headlights go off while driving by nedsmithtn

Dec 21, 2012 (5:00 pm)

When we bought our 2000 Grand Marquis in 2000 (it had 6,000 miles on it), the salesman said that the previous owners said that the car was "possessed". Well, we didn't think much of at the time, but now realize what they were talking about. We've had the car 12 years.
   Last Fall, (Oct. 2011) we were coming back from Louisville, pulling a boat trailer at 8:00. All of a sudden, we lost all lights on a rural highway. We pulled off, and I thought the problem was the trailer lights, which I unplugged. The lights worked, and we got home.
   Two months ago (Oct. 2012), we were on a rural road (no trailer), and they went out again. I had to use emergency flashers to get home. I called the dealer, and he said they replace the lighting module ($512) on the Marquis, all the time. I got on this forum and verified that was the problem.
   I got the dealer to change the module (it took two visits, as when first installed, they loosened an inline fuse) -- I got a break on the parts and labor due to family employee. Voila! All is well. In fact, I never liked the wimpy headlights on the Marquis, compared to my BMW. I had switched to high intensity bulbs in the Marquis, but that didn't help much. BELIEVE IT OR NOT, WITH THE NEW MODULE THE LIGHTS ARE TWICE AS BRIGHT.

Messages Page 22 of 25

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