Question about 2007 Jeep Grand Cherokee Overland

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2007 Jeep Grand Cherokee..tail ligts and blinkers do not work when headlights are on..they work otherwise..another problem when headlights or running lights are on and I use left blinker, it blinks extremely fast. Right blinker blinks normal..??

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Mporteous, It sounds like you have a light switch problem. I can't think of any other reason for the running lights and tail lights not working in this situation. Are your brake lights working when the headlights are off and how about when they are on? Do your four ways hazard lights work in these situations? Try all the lights under these conditions. The reason the left turn signal blinks very fast is because one of the bulbs are burned out. Try the left signal and one light (front or back) will stay on and the other will not come on at all. Replace the bulb that does nothing. Do this before you try all the lights in different situations. I think that you will have to replace the light switch. Good luck with this.

Posted on May 19, 2011

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  • afp205 May 19, 2011

    brake lights and signals work when lights are off..tail lights and blinkers do not even illuminate when headlights or running lights are on..just so frustrating.Thanks for your advice and I will check the bulbs..checked the fuse today and it is fine.

  • Jilly willy Aug 05, 2011

    I am having this same problem. Did you ever find out what the problem was?

  • muniz999 Oct 07, 2011

    I'm having the same exact problem. It's not the bulb. The tail does not work only when the bead lights are on. Any solutions?

  • muniz999 Oct 07, 2011

    *head lights, not bead lights.

  • BrotherTodd Oct 12, 2011

    Same problem here. Any actionable solutions much appreciated!

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Replace all the turn signal bulbs if the flasher is faster than normal.

Posted on May 02, 2015

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1 Answer

I have a 99 Jeep Grand Cherokee Loredo 4x4. I have headlights, blinkers, flashers, but I DO NOT have break lights or running (rear) lights. Any suggestions. Can't afford to hire someone to look. I was told...


Have you checked the fuse, there is fuse for just the tail lamps. If it was isolated to brake lights only, I would suggest the switch attached to the brake pedal.

Oct 09, 2013 | 1999 Jeep Cherokee

1 Answer

Rear light and brakelight don't work when headlights are turned on 1999 Jeep Grand Cherokee


My first guess would be a ground problem.
The headlights and tail lights are controlled by the same headlight switch, but the brake lights are on a totally different circuit.
You may have to get a shop manual to get the wiring diagrams needed to troubleshoot the circuits if the ground connections are ok.
The lights involve the body computer and other components.

Mar 08, 2013 | 2004 Jeep Grand Cherokee

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2000 Jeep Grand Cherokee, I had blinkers and flashers no brake lights, and after checking the bulbs in the light itself I dont have blinkers or flashers at all


Just no turn signals in the back now? Maybe didn't install the bulbs tight back into the asm? No brake lights...do the lights work with headlights on and just no illumination with the brake pedal depressed? Could be brake light switch.

Oct 01, 2010 | 2000 Jeep Grand Cherokee

1 Answer

2007 Jeep Grand Cherokee tail light problem. When the lights are turned on the rear right tail light and blinkers do not work. When the lights are turned off they work like normal. A ground issue maybe?...


hello Anon.
battery charged, fuses good, F10 is RR. park
trailer wring hacks? (inspections find that) and collision damage there RR.
does RF work with RR fails>? both ends of car have park and blink.
I avoid Tail word for that one fact.
if you scan the PCM with a scan tool, are there DTC errors.
not scanning makes work 10x harder.!

"rear right tail light and blinkers do not work." both are dead? "and"
then turn off parks and blinks start working?
maybe the parks and blink wires shorted to gether.
what does not work mean, dead, or stuck on?
all key facts in diagnosis. all that.
i have 2007 GC FSm.

there are 4 elements (lamps actual there)
park is seperate from blink , totally.

the MIP module under hood drives turns off sperate drivers.
LF, RF ,LR, RR. so RR is bad. and not related to front like old cars.
park feed
all park lines go to a single point, the park relay 7 output.
so if something shorts to park all parks mess up.
each line has a fuse. so each can die by self.
There is only 1 park relay #7

so my question is, do any other park lamps mess up.
you said the blinks and parks (tail) do not work.
so? what about all park lamps. side and front.

if only RR fails, no other symptoms, i concur, bad ground. there.

a volt meter can measure bad grounds
with wire to battery neg,
and red meter at ground on lamp base.
if not 0v, or less than (0.5v) a 1/2 volt, its bad.

Jun 10, 2010 | 2007 Jeep Grand Cherokee Overland

1 Answer

Headlight problem.


Well you have a double ground somewhere. Check the the grounds for your headlights.

Oct 25, 2009 | 2003 Jeep Grand Cherokee

2 Answers

Headlight Jeep Grand Cherokee 1997


where is fuse box for dash lights?

Jul 02, 2008 | 1997 Jeep Grand Cherokee

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