Question about 2004 Jeep Grand Cherokee

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2004 Jeep Grand Cherokee; taillights go out w/ brake press

When the headlights are on and the brake is pressed, taillights go out. When the brake is released the tail lights are fine. When the headlights are off, everything is fine.

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Try checking one of 2 things, Check the fuses. I had a 94 cavalier do the same thing after i put a 30amp fuse in to a 25amp slot for the courtsy fuse. Also check the bulbs in the tail of the vehical to make sure they are the right ones. If this dose not do it get a test light & wire diagrham, you may have a bad short to ground some where in the brake light wires.

Posted on Feb 25, 2009

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I have a 97 Jeep Cherokee and my real tail lights won't turn off when the jeep is off. I see a creamish colored box with a black button that when its pressed lights go off. What do I do??


The taillights should turn off when the headlight switch is turned off, not when the key is turned off.
The brakes lights should turn off when the brake pedal isn't being pressed. If the brake lights remain on, replace the brake light switch.

Jul 29, 2014 | Cars & Trucks

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1999 Grand Cherokee at night when headlights are on the right brake light goes off when you apply the brakes


The 1999 Jeep Gran Cherokee has standard all-wheel antilock brakes. The new braking system has electronic brake distribution capability, which makes for a quieter, less pulsing and more balanced braking experience. Possessing the largest brake rotors in the sport-utility segment, the Grand Cherokee meets or exceeds requirements for passenger vehicles, which are stricter than those for light trucks. -----------------------------------------------------------------------------------------
Original Launch X431 Master

Mar 09, 2013 | 2004 Jeep Grand Cherokee

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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

1 Answer

When I turn on my lights I have no taillights. And when I apply the brake I have no brake or taillights. But I do have brake lights when I apply the brake with the lights off.


POSSIBLE HEAD LIGHT SWITCH ASSEMBLY,POSSBLE BRAKE LITE SWITCH CHECK FOR GOOD GROUND TO LIGHTS IN BACK AN MAKE SURE ALL BULBS ARE GOOD NOT SHORTED OUT

Dec 19, 2010 | 2004 Jeep Grand Cherokee

1 Answer

Brake lights dont work on 2004 jeep cherokee


If one side is going out, then chances are that the prongs inside the light housing are not making contact. It's a well-known problem. It's an esay temporary fix. Just remove the taillights, unplug the wire. Take out the top bulb (brake light) and you'll see three contacts on the inside of the ring of the bilb housing. Take a flathead screwdriver and pry them up just a light bit and then put the bulb back in and plug it back in and give it a try. There is a little bit of trial and error, but it's not the $173 that you'll spend for a new taillight at the dealership.

Jul 26, 2010 | 2004 Jeep Grand Cherokee

1 Answer

I replaced all the taillight lamps in my Cherokee and when the headlights or running lights are on you can't see the brake lights come on...


if when you turn on just the tail lights and they are bright then you either have the wrong bulb or installed wrong

Jan 17, 2010 | 1993 Jeep Grand Cherokee

2 Answers

My 2004 jeep grand cherokee's drivers side brake light goes out when i press the brakes with the head lights on but it. it works normal when the head lights are not on. any suggestions


I would suggest that you take a look here (I used this to correct brake-light issues on my '01):

http://www.topix.com/forum/autos/jeep-grand-cherokee/T63DRCOTUFKMHQ207

Many Grand Cherokees have had this type of issue. The thread is lengthy, but does cover just about every type of issue known with the tail/brake lights.

Dec 07, 2009 | 2004 Jeep Grand Cherokee

1 Answer

My rear lights on my 99 jeep grand cherokee do not work when I turn the lights on. They work fine when the lights are off. Any idea as to what the cause might be. Any place I can view a wiring diagram...


These Jeeps are notorious for the retainers breaking that hold the circuit board type wiring against the bulb contacts. With my 2000 Grand Cherokee, the brake lights would work when the headlight/tail lights were off. If the lights were on, the rear lights would go out altogether when I pressed the brakes. The easist fix would be replacing the tail light assemblies, but these are not cheap. My fix was to open up the inside cover of the tail light housing and use machine screws in each of the locations that the plastic tabs hold the retainer against the light housing.

Jul 27, 2008 | 2004 Jeep Grand Cherokee

3 Answers

1999 jeep grand cherokee brake lights


I have a 2004 Jeep Grand Cherokee that I purchased only three months ago. It has already been in the shop three times in a month so I fee like I can help you with your problem. My rear brake light did the same thing and I just had to purchase the whole light socket. It only cost $13.00 from Jeep. I know your jeep is a 99' but the mechanic said that all Grand Cherokees from the last six years or so had the same problem. Changing the light bulb won't work. It will simply burn your bulb out. Simply buy the plastic socket that the bulb snaps in and that should fix your problem. It did for me.

Jul 10, 2008 | 1999 Jeep Grand Cherokee

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