Question about 2001 Jeep Grand Cherokee

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BRAKE LIGHTS 2001 Cherokee - I have brake lights until I engage Marker lamps and Headlamps. The brake lights will be on and then they go completely out - both of them.

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  • blairk123 Nov 15, 2008

    Brake lights and tail lights work fine, until I turn on the head lights. Then, no tail lights or brake lights

  • forsterm Jan 17, 2009

    I dont believe it-marsulles screwdriver trick worked-5 minutes and no $. This dude saved me some stress. Where can a send a bottle of scotch? Thanks a bunch!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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First, I want to say thank you for the info, you saved me money and aggravation. Second it took mea little while to figure out what contact I was looking for. So I would like to provide a little more detail to make it easier for others in the future.
This is the corrective method for your brake lights not working when your headlights are on(2000 Jeep Cherokee Larado).
1) The cause of the problem is heat from the bulb.
2) Remove the light assembly as if you were going to change a bulb.
3) Turn the socket and remove it from the taillight assembly and set it aside(check to be sure your bulb is not burnt out).
4) Look at the opening, you will see 3 flat chrome colored contacts on the assembly.
5) Notice the one by it self at the top of the opening, that is the “ground”.
6) If you look closely you will notice the plastic around the ground contact has shrunk a little bit, this caused the contact to pull away from the socket, causing the problem.
7) With a small flat head screwdriver, VERY GENTLY pry up the contact so it stays slightly upward by itself.
8) Re-insert the bulb assembly back into the housing and press your brake petal with your lights on.
9) You should be in good to go!
10) Tools: Phillips head screwdriver and a small flat head screwdriver.
11) Time : 5 minutes per light

Posted on Nov 18, 2008

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  • Master
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Check the ground circuit

Posted on Nov 03, 2008

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3 Answers

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Your right brake light is not the same bulb as your rear running light that comes on with the headlights. Different bulbs. Your right brake light is simply burnt out or has worked its way out of the connection. Take it to Advance Auto Parts. They may even change it for you. Not a big problem.

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On my 1999 Olds Intrigue I have never had to turn on my lights at night. All night time driving lights come on automatically until recently. Now only the headlights come on.To get the dash lights,tail...


Without testing i would say you have DRL control module problem , But that would just be a guess .
In the night mode, the DRL ambient light sensor senses darkness. Then, the DRL module turns off the front turn lamps and turns on the headlamps through circuit 10. The DRL module also turns on the park, side marker, license, and tail lamps. If the engine should stall with the DRL control module in the night mode, the DRL control module will turn off the headlamps and leave the side marker, park, license and tail lamps on while the engine is being cranked. The headlamp switch operates as usual.
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Do the Daytime running light's work ?

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Park, Tail, Marker Lamps, and License
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Did you the REAR PARK LP fuse 15 amp in the right insturment panel fuse box.

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1 Answer

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MY 2005 JEEP GRAND CHEROKEE HAS A BRAKE LIGHT ISSUE. THE BRAKE LIGHTS WORK UNTIL THE HEAD LAMPS ARE TURNED ON, THEN THE RIGHT BRAKE LAMP BECOMES TOTALLY INOP. POSSIBLE SOLUTIONS?


Pretty common problem if you have a weak or bad ground, check all the ground connections by the back lights.

Rate my answer...........Thanks

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1 Answer

2001 Grand Cherokee Limited- Driver side rear brake light does not work if tail lights are on. When you step on brake tail light also goes out. With lights off everything works ok.


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Nov 19, 2009 | 2001 Jeep Grand Cherokee

3 Answers

Tail lights work, but not one brake light when braking at night.


2001 jeep grand cherokee left brake does not work period. I replaced bulb to no avail. the entire tail lamp assembly looked brown as though it heated up. However, the tail light, signal light and back-up lights still work. Please help.
Mike.

Sep 03, 2009 | 2001 Jeep Grand Cherokee

1 Answer

Problems with brake lights on my 2000 Jeep Grand Cherokee


YES -- process of elimination. Obviously there's a short circuit in the Brake/Headlight circuits - right? Blown fuse(s) is/are evident of this -- would you agree? Which fuse(s) is/are blowing? An analysis tells you that the only time a fuse blows is when the headlamps are turned on -- correct? Otherwise, brake lights work normally -- right? OK. Head lamps have relays which turn them on. Here's a wiring diagram of the 2000 Hyundai Sonata (NOT the Jeep Grand Cherokee)
7a9e354.jpg a663f53.gif It would appear the problem is with one or more bulbs or sockets or both. As you many notice, there are no connections between the headlamps and brake lamps except the parking lamps (which share the bulbs/sockets)
c7068ec.gif When the headlamps are turned on, so does the tail lamp relay. As you can see, these bulbs/sockets are 'DUAL' filament to ground (series-parallel circuit). Just a guess here - the short is in one of the lower rear brake/parking lamp bulbs/sockets.... just a guess.

Jun 19, 2009 | Hyundai Motor 2004 Sonata

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