Same problem here! Turn signals we're working and literally the next day they weren't. Hazards are working just fine. Already tried with a new flasher relay and that was not it. Also tried with a new multifunction switch, and nothing. Please help!!! What else can I try? I'd appreciate any help I can get.

Found this thread, had the same issue with my 2001, but only with my turn signals. Replaced with EP27 from AutoZone and done.. FIXED!

Thanks guys!

Raz

I know this is an old thread, but the information is still relevant. I have a '99 Cherokee, 4.0, 4WD, all stock. Two weeks ago, the emergency flashers began acting up, and then last week, the turn signal just quit working. Extensive testing showed that if I turned the flasher on (ignition off) only the left front lights lit up. If I depressed the turn signal for a left turn, with the emergency flasher still on, the left side would flash. If I moved the turn signal to a right turn, all the lights would flash. If I turned off the emergency flasher, nothing worked, ignition on or off.

I should have gone to Auto Zone for EP27 at $15.99, but instead I went to Advanced Auto, and paid $45 for the part.

When I first installed the new flasher, and tested it, nothing changed. Discouraged, I reassembled the dash, and went inside to put my tools away. As I thought about it, though, it occurred to me that the turn signals only work when the ignition is on, so, I went back outside and cranked up the Jeep. I then tested the signal functions again. At first, they malfunctioned in the same way, but as I cycled through the options, each began to work, and in the end, everything worked as it should. Apparently, there's a computer in there, somewhere, that has to be reinitialized to recognize the new flasher before it will work properly.

So, crank the car and test all the functions before you give up on it!

2000 Jeep grand Cherokee. New turn signal multi function, switch and new turn signal relay, still no turn signals most of the time. Everything else works fine. Rear gate remote unlock is the only other thing that does not work
any ideas?

What do you mean by "most of the time"? Is there a pattern or is it completely random whether/when they work?

Any intermittent fault suggests a bad connection or poor ground, to me.

I have the same problem but for me I had just fixed my 3rd brake light and the next day only the hazards work changed the switch and the relay checked every fuse I have absolutly no idea as to what it might be.