2000 Jeep Grand Cherokee, Turn Signals Erratic / Not Working

This 2000 Jeep Grand Cherokee came in with the complaint that the turns signals would work sometimes. When it arrived at the shop they were not working at all. Experience tells me that it is probably a faulty flasher assembly but a few panels have to be removed to access the flasher relay.

The panel at the lower edge of the instrument cluster unsnaps and pulls away. It has to be maneuvered around the tilt lever.


The fuse box cover at the lower left of the dash has to be removed. It unsnaps and pulls down.

There is a 10 mm headed screw in each of the lower corners of the knee bolster.

A phillip’s head screw at the end of the dash.

Two phillip’s headed screws at the top edge. One on either side of the steering column.

In the picture below, I am pointing out that there are relays above the fuse area.

The hazard/turn signal flasher relay. With either the hazards or turns signals switched on it usually only takes a slight push to make the flasher start working again. After I was sure of the problem, I used a pair of pliers to gently grab the relay and wiggle it from its socket.

I then used a couple of small screw drivers to release the side latches that hold the cover on the relay assembly.

With the latches released I separated the two pieces.

If you look closely at the upper left solder joint you should see the crack in the solder joint.

A little touch up with a soldering gun and some electronics grade solder and this one was fixed.

Sometimes more that one solder joint will have to be repaired so look closely.

51 discussions on “2000 Jeep Grand Cherokee, Turn Signals Erratic / Not Working”

  1. Did the flasher/solder fix. Everything worked like a charm. Then I was moving and turned on the flashers while I moved stuff inside. When I came back out flashers were off. Now they only work when the key is ON. Noiced that they don’t flash when I lock/unlock my doors anymore either. How weird is that? Any Ideas?

  2. There is a very good chance that replacing the light assembly will finish correcting your left turn signal issue. I am assuming that the front and interior left turn signal lights flash rapidly while the rear one does not flash at all.

  3. I have a 2001 Jeep Grand Cherokee Laredo 4.0 Liter 6 Cylinder. I have had trouble with the left brake light not working while the headlights are on but found a fix for that and am going to just replace the tail light assembly to avoid having to continue to take the tail light assembly off and pull the ground out on the bulb socket each time it decides to stop working.

    I have also had the same problem as everyone else with the turn signals not working with the exception of my turn signals do not work at all. The left signal went bad first. For a short time I was able to turn the hazard lights on and off and make the left turn signal work but eventually that stopped working. Then on a rare occasion the left signal will work as if nothing was ever wrong with it. Then the same thing happened to my right turn signal. My hazard lights and running lights have always worked without any problem.

    I had the flasher relay replaced today and it fixed the right turn signal but the left turn signal still doesn’t work. Do you have any idea what is causing this and do you think it has something to do with the tail light assembly and once that is replaced, my left turn signal will work properly?

  4. I soldered the top left tooth in the relay and my turn signals worked again. Great directions btw, but not hazards so after a week or so i removed the relay on my 99 jeep grand cheorkee and tried to solder the other crack. Well i shouldnt have cause now only the right signal works and still no hazards.

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