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I've got a '16 JKU w/ Manual Tran and recently I've noticed a sloshing sound when I start up and move forwards or backwards. I can usually hear the sound for a few minutes. It sounds like like some kind of fluid or water is splashing around underneath the center console area.

First thought would be something transmission fluid, but don't know why since it's the original fluid from the factory.

Any ideas? and should I be worried and take it to dealer to be looked at?
 

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could be an air bubble in the cooling system, which sounds like a waterfalls from behind the glove box. Mine sounded like that when I changed my thermostat so each morning when it was cold I added antifreeze til the radiator stopped being low.
 
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Forgive me if this is a stupid answer....I don't have my Jeep yet (it's on order) but I had an Expedition with a similar issue...turns out they have "wet" doors with drain plugs at the bottom. If the drains are plugged, your doors will fill with water (who knew?). I pulled the plugs on the doors and got a surprising amount of water out...

Anyhow...again, sorry if this is not applicable on the Jeeps, but it's worth looking into...
 

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Is the sloshing sound definitely coming from the center console area? Some have said that the overhead freedom panels of their hardtop have filled up with water and describe a similar sound. Something to consider if you have a hardtop.
 

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I heard similar noise. Turned out my oval sidesteps were holding water. I drilled holes underneath to let the water out. There was a lot in there. I have since switched to rock sliders


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Sounds like some air got trapped in the heater core. Pretty common after coolant change and usually goes away by itself.
Is your jeep new? Was the cooling system flushed recently?

You may try to burp your cooling system and see if it helps.
Yeah I had to have to radiator replaces back around Thanksgiving. I will try burping the system to see if that helps.
 

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Is the sloshing sound definitely coming from the center console area? Some have said that the overhead freedom panels of their hardtop have filled up with water and describe a similar sound. Something to consider if you have a hardtop.
Well I do have terrible hearing so it could be from anywhere front and right of me. Hard to try and get close to the sound while driving. I can rule out freedom panels as I have a soft top.

Someone also mentioned side steps, but I've got the Black Bear packaged rails, so don't think that's the issue either.
 

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HI there. Fellow NC State guy here. "87.

Had the same issue, and my ears were playing tricks on me. Took it to the dealer and they immediately checked the heater core / cooling system. Nada. In my case, it was actually water collected in my tubular welded closed side steps. No clue how that happened. Drilled some drain holes, and a gallon each of water came out. Unreal.

I guess the lesson is to not discount an easy answer. Dealer was very helpful in finding the issue.
 

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I've got a '16 JKU w/ Manual Tran and recently I've noticed a sloshing sound when I start up and move forwards or backwards. I can usually hear the sound for a few minutes. It sounds like like some kind of fluid or water is splashing around underneath the center console area.

First thought would be something transmission fluid, but don't know why since it's the original fluid from the factory.

Any ideas? and should I be worried and take it to dealer to be looked at?
i had a similar sound with my 2014, took it into dealer right before warranty expired...it was a thermostat housing issue. I'd have to look at the paperwork again to remember the specifics. go ahead and get it looked at.

- 2009 state grad, hope you've been enjoying suffering through bball season as much as i have :atomic:
 

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Mine was an air bubble in the heater core. Got it after a coolant flush. When the shop took care of that they also swapped the thermostat. Swishing sound gone.
 

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I have the same issue.
Only notice it first thing in the morning as I back out of the driveway. Never hear it after that.
Sounds to me like its coming from the cargo area.
 

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I have the same issue.
Only notice it first thing in the morning as I back out of the driveway. Never hear it after that.
Sounds to me like its coming from the cargo area.
Check the area where the factory jack it located. I recall a few folks reporting water getting in there from a leaking top/tailgate.
 

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Solution!

I had this problem on my 2010 unlimited for a year before I figured it out and it drove me crazy! If you hear sloshing in the dashboard you have a clogged A/C condenser line.

There is a a black rubber elbow sticking out of the firewall between the steering linkage and the transmission way down near where the firewall meets the floor pan. easiest way to get to it is to get under the jeep on the driver's side.

You have to do a little twisting but the elbow comes right off and exposes about 1/2" of the condenser line. you need to *gently* stick something like a screwdriver or bent wire hanger in the line to unplug the clog.

trust me, you'll know when it works because about a gallon of water is going to come pouring out (much to the amusement of my 13 year old son who watched his old man get soaked).

Put the elbow back on and you are good to go. I have not heard the slosh since.

FYI - my situation got so bad that I was getting water dripping under the dash on the passenger side as well. I wound up having to also replace the blower motor and fan resistor but it only totaled about $60 and took me less than an hour to do the whole job.
 

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I agree. Try this first as it only takes a minute.
 

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Same Issue (Water Sloshing Sound)

I have a 2012 Jeep Wrangler Unlimited Sahara. For about the last 2 months I have had a "water sloshing sound" that comes and goes on my passenger side. I have had my heating coil replaced, the radiator replaced and the thermostat housing replaced all by a Dodge Dealership and luckily under warranty. However the sloshing sound has come back once again...this time it didn't really come back until after we had a good rain.

I also have an issue with my passenger side carpet being constantly soaked after it rains. I have weather tech floor mats that have had water standing in them on both the diver and passenger side.

Any advice or solutions are greatly appreciated!
 

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Don’t know if this helps but I had oval side steps on my Jeep when I first got it and they filled with water. I had that sloshing sound and thought it was a bigger issue.

I drilled holes under the steps and a whole bunch of water poured out. Just a thought while you are trying to eliminate reasons


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I have a 2012 Jeep Wrangler Unlimited Sahara. For about the last 2 months I have had a "water sloshing sound" that comes and goes on my passenger side. I have had my heating coil replaced, the radiator replaced and the thermostat housing replaced all by a Dodge Dealership and luckily under warranty. However the sloshing sound has come back once again...this time it didn't really come back until after we had a good rain.

I also have an issue with my passenger side carpet being constantly soaked after it rains. I have weather tech floor mats that have had water standing in them on both the diver and passenger side.

Any advice or solutions are greatly appreciated!
Welcome to the Forum.
 

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I have had this for about 3months, driving me bananas, going to try clearing the AC condenser line, thanks for your suggested advise BedfordWrangler.
 
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