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03 Grand Cherokee 4.0 Turn sigs did not work, did. I

Customer Question
03 Grand Cherokee 4.0...
03 Grand Cherokee 4.0 Turn sigs did not work, flasher did. I replaced the flasher but turn sigs still don't work
JA: What are all the symptoms you've noticed (e.g. noises, leaks, flashing lights, error codes)?
Customer: No noise leaks or error codes. Just turn sigs don't work but emergency flasher does
JA: How old are the hoses? And what driving conditions do you most often encounter?
Customer: New hoses. Street, freeway, outback (least often)
JA: Are you fixing your Outback yourself? What have you tried so far?
Customer: what outback? I'm talking about my Jeep
JA: Anything else you want the mechanic to know before I connect you?
Customer: No that's enough. I just want to know what he might think is happening
Submitted: 1 year ago.Category: Jeep
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Answered in 8 minutes by:
8/6/2016
Jeep Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago
AZTechBrian
AZTechBrian, ASE Certified Technician
Category: Jeep
Satisfied Customers: 732
Experience: Owner
Verified

Hello. This is not uncommon on this vehicle. Under the dash there is a turn signal relay that is in need of replacement. You could also attempt to repair if you have a soldering iron and the ambition to do so.

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Jeep Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago

I will find you a diagram showing the location of that relay if you'd like.

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Customer reply replied 1 year ago
I've already replaced it with a new one just now. No change
Customer reply replied 1 year ago
Flashers work turn sigs do not.
Jeep Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago

Yes. That's exactly what happens when this relay goes bad. the hazards will work but turn signals will not. You replaced the relay in the front junction block?

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Customer reply replied 1 year ago
that's what I'm trying to tell you -- relay was replaced, same symptons as previously indicated still occurring
Jeep Mechanic: AZTechBrian, ASE Certified Technician replied 1 year ago

Ok. ;I have seen this numerous times and it has always been that relay. Since it's not the case for you, I will open this up in hopes that someone else here knows of another issue that would cause this. Sorry about that. Someone should be along shortly.

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Jeep Mechanic: sprinkles08, ASE Certified Technician replied 1 year ago
sprinkles08
sprinkles08, ASE Certified Technician
Category: Jeep
Satisfied Customers: 23,261
Experience: Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist
Verified

Hello and welcome to JustAnswer!

Do you still need help?

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Customer reply replied 1 year ago
Yeah problem still exists
Jeep Mechanic: sprinkles08, ASE Certified Technician replied 1 year ago

Are you able to do electrical testing?

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Customer reply replied 1 year ago
No did no further diagnostics.
Jeep Mechanic: sprinkles08, ASE Certified Technician replied 1 year ago

You've checked fuses?

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Customer reply replied 1 year ago
I looked at the fuse box (there are two one under the dash and one under the hood) but the owner's manual wasn't real clear which fuse governs the turn signals. Can you tell me?
Customer reply replied 1 year ago
I have an assortment of fuses so changing one immediately would be no issue. I just need to know which one ...or could it be one of many?
Jeep Mechanic: sprinkles08, ASE Certified Technician replied 1 year ago

Fuse 20 in the junction block is the one in question.

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Customer reply replied 1 year ago
Will check and advise.and replace if blown
Customer reply replied 1 year ago
Replaced fuse. Right blinker works left does not
Customer reply replied 1 year ago
How's that??
Customer reply replied 1 year ago
Fuse blew after about 15 mins of driving. No sigs at all now. Any other suggestions?
Jeep Mechanic: sprinkles08, ASE Certified Technician replied 1 year ago

The fuse blew because there is a short to ground somewhere in the circuit. It could be anywhere between the flasher and each light. If the left side didn't work then there is a good chance the short is in the left side wiring. The first thing that will need to be done is a visual inspection of all the wiring, paying particular attention to trailer tow wiring if you have it.

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Customer reply replied 1 year ago
OK we'll have my mechanic check it out. Thank you
Jeep Mechanic: sprinkles08, ASE Certified Technician replied 1 year ago

You're welcome and good luck with it!

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Customer reply replied 1 year ago
Your online troubleshooting was very helpful thanks again
Jeep Mechanic: sprinkles08, ASE Certified Technician replied 1 year ago

You're welcome!

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sprinkles08
sprinkles08
sprinkles08, ASE Certified Technician
Category: Jeep
Satisfied Customers: 23,261
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Experience: Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist

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