Couple of odd things happened.....

[DobaMark]

Exactly like my 2011 Silverado did to me more than once.
I'd come home with a touch under 1/4 tank, park in our driveway, then go out the next morning and start it and get the "fuel low" warning and it would show a scant 1/8 or less. Next stop and start, the low fuel wasn't on and it was a bit closer to accurate.

I fail to see how you can say "will likely only get worse with time" - things that wear get worse with time. Things that are loose get worse with time.
Electric fuel gauges? No.
They are what they are as there's nothing about them to "get worse with time." There's nothing about them to "get worse with time". It won't get better, but it's not going to get worse.

You have expansion and contracting of the fuel itself (don't believe me? Fill a gas can to the max on a cold day and set it where it can get warm - wow), you have the level or not-level place where you parked (take a 8' or better contractor level to the spot you park - you may be surprised), a lot of things factor into it.
Honestly, what you experienced is nothing much different than what I did with my Chevy for the years I had it.

Everything I own - once I get down to 1/4 "by the gauge" I assume the worst.

I'm not talking about a gauge that's reading less than what's there. I'm talking about a gauge that, for an extended time, registered no fuel. That tells me the float is either sticking or there's a communication problem (both of which are situations I expect can get worse over time).

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[Renegade]

No, this isn't normal. I've never had another vehicle, Jeep or not, fail to recognize there was fuel in the tank for 20 minutes as I was driving up and down hill. Either the float was stuck or the system wasn't getting the reading from the sending unit.

I have had several. CJs, Wranglers, 4Runners. When the tank is low, and the fuel moves around, it will often read lower than it is. Conversely, it will register more occasionally too if the fuel is more toward the sensor due to terrain.

 

[DobaMark]

I have had several. CJs, Wranglers, 4Runners. When the tank is low, and the fuel moves around, it will often read lower than it is. Conversely, it will register more occasionally too if the fuel is more toward the sensor due to terrain.

I've had several Jeeps and other trucks as well. When the tank is low, it may read incorrectly. My Dakota was famous for the fuel level bouncing up and down as I accelerated and braked as gas sloshed around in the tank. But it didn't drop to ZERO fuel and stay there for an extended time on any of these.

It's now happened for a third time in the past month yesterday. It never happened in the first 5 months I owned it. Then 3 times in the last month.

 

[ShadowsPapa]

No, this isn't normal. I've never had another vehicle, Jeep or not, fail to recognize there was fuel in the tank for 20 minutes as I was driving up and down hill. Either the float was stuck or the system wasn't getting the reading from the sending unit.

Then why don't you take it to the dealer for a diagnosis and get it on record?
Get it either looked at or at least have them record your complaint.
These fuel modules cost in excess of $200 bucks so unless you want to fiddle around arguing about it - and end up with it out of warranty, go to the dealership.
You are saying the fuel gauge NEVER MOVED OFF below empty when you started it?
It didn't even BUDGE?
If it moved at all, then that's a different animal - it's getting a signal from the module with the "sending unit".
If the gauge needle never even BUDGED one bit after you hit the ignition and started it, that's something else - no signal at ALL from back there.
So you need to watch carefully - note the needle position when it's at rest BEFORE you touch that button - then watch that needle carefully after you start it. IF it moves, that means it's getting communication from the "Sending unit".

I've been an auto tech for over 45 years - attention to detail is an absolute necessity when trying to diagnose things and rounding numbers doesn't count.

I'd further wonder - didn't you get a message from uconnect that your fuel level was 1/8 or below?
If I let mine appear to be that low I get a uconnect alert on my phone. (even if I go out and start it and find there's actually a little over 1/8" tank - I try not to let it get that low but gas stations are literally a trip for us - and with covid, I minimize trips anywhere. )

 

[DobaMark]

Then why don't you take it to the dealer for a diagnosis and get it on record?
Get it either looked at or at least have them record your complaint.
These fuel modules cost in excess of $200 bucks so unless you want to fiddle around arguing about it - and end up with it out of warranty, go to the dealership.
You are saying the fuel gauge NEVER MOVED OFF below empty when you started it?
It didn't even BUDGE?
If it moved at all, then that's a different animal - it's getting a signal from the module with the "sending unit".
If the gauge needle never even BUDGED one bit after you hit the ignition and started it, that's something else - no signal at ALL from back there.
So you need to watch carefully - note the needle position when it's at rest BEFORE you touch that button - then watch that needle carefully after you start it. IF it moves, that means it's getting communication from the "Sending unit".

I've been an auto tech for over 45 years - attention to detail is an absolute necessity when trying to diagnose things and rounding numbers doesn't count.

I'd further wonder - didn't you get a message from uconnect that your fuel level was 1/8 or below?
If I let mine appear to be that low I get a uconnect alert on my phone. (even if I go out and start it and find there's actually a little over 1/8" tank - I try not to let it get that low but gas stations are literally a trip for us - and with covid, I minimize trips anywhere. )

I don't have my Jeep registered for UConnect messages. I probably should set that up.
I'm going to pull out my scanner to see if any codes are present. I'm still waiting for my first oil change where I will discuss this and my hope they will do the steering TSB. I'm a long way from the nearest dealer so I don't go right away for every little issue.

I simply post here because too often dealers dismiss issues and I'd like anyone else searching the issue to see others have the problem too.

 

[Ravenron]

Hey guys...I had a similar problem with my 2017 RAM 1500 (5.7L if it matters). Was driving and the fuel gauge would drop to zero, fuel light would come on and DIC would tell me I was outta gas. Several seconds later - all was good again. This would repeat several times in my commute...I even got it on video (I was on a backroad, all alone - don't flame me ). Turns out, FCA had a problem with some of the fuel level sending units. Unfortunately, this item is attached to the fuel pump in the tank - required full replacement of pump/sending unit combo, removal of the tank, etc. etc. I was sure glad I was still under warranty.

I would not delay in having my dealer review this issue and document the problem as I would bet the Jeep part and the RAM part are similar.

As far as the AutoPark stuff - other posts here are spot on with an open door causing issues - been there done that and chased my tail a bit before realizing what was going on. I haven't noticed the OP respond since his initial post but I hope he checks the door open/not open question - might put his mind at ease.

Hope you guys have a very Happy Thanksgiving!

 

[mike921921]

I'll vote for Auto Park (first time I had to look up the symptoms on my phone). Being an old guy, I guess it protects me from - me!

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