Broke down on vacation help

[Utahlasvegas]

I really appreciate all of the information you guys are providing. My cousin and I are giving this a try, but the chords going to the main battery look different from what I’m seeing on YouTube.There is only one thick cable along with a small and skinny one.

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[Utahlasvegas]

After much online research, it appears that my model does not have an Aux battery. I have a 2.0L engine.

 

[SaintNick]

Recommend you check to ensure ALL your fuses are fully seated. Heard this to be an issue on many JLs. Many of ours were not fully seated - although we never had symptoms like yours. Good luck, hope it's something simple.

Almost every one of mine made a click when I checked mine so very few were fully seated.

 

[Utahlasvegas]

After much effort, we were able to jump the Jeep, and we moved it a few thousand yards down the highway to our motel. It barely had any power, and we barely made it. At least it’s not sitting at a gas station anymore. A service transmission light is on the dash, and it’s the only notice available. It looks like we’ll be sticking to our tow appointment in the morning.

 

[kakwvu]

Interested in what’s going on here. I didn’t know the 2.0L didn’t have the auxiliary battery in it, never looked into their config. Would have been my first and only guess based on how the entire vehicle becomes bipolar when it fails.

 

[Kyanche]

Then we decided to try to drive back to the Jeep dealership where I live about 300 miles away. We drove for about 30 minutes, but then the stereo went out; then the air conditioning stopped working. And then the power steering stopped working. I pulled into a gas station parking lot, and it died. It has no electric power at all.

I'm not a mechanic, and I wouldn't be the least bit surprised if I were wrong, but maybe your alternator died. Or maybe the belt connecting it to the engine broke or something. I'm not sure how the turbo works, but if it were electrically powered (or relying on something electrically powered) instead of belt powered, that would also explain why there was very little engine power.

Edit: Also, does your 2.0T Jeep have "etorque"? If it doesn't have the aux battery it probably DOES. That system uses a 48v battery in the back near the gas tank. I completely forgot about that. Instead of having an alternator I think those just have a belt-start-generator.

 

[NWJeepr]

I was just thinking 2.0 e-torque too.

How old is the main 12v battery? Looks like an aftermarket that's in there. Tried having it tested yet?

 

[Husky Man]

I'm not a mechanic, and I wouldn't be the least bit surprised if I were wrong, but maybe your alternator died. Or maybe the belt connecting it to the engine broke or something. I'm not sure how the turbo works, but if it were electrically powered (or relying on something electrically powered) instead of belt powered, that would also explain why there was very little engine power.

Edit: Also, does your 2.0T Jeep have "etorque"? If it doesn't have the aux battery it probably DOES. That system uses a 48v battery in the back near the gas tank. I completely forgot about that. Instead of having an alternator I think those just have a belt-start-generator.

A Turbo Charger uses a Turbine in the exhaust system, to spin a turbine in the intake system to “Boost “ intake pressure and airflow to increase power

A super charger, is similar but is belt driven off the engine, instead of using exhaust gas pressure.

Pretty simplistic explanations, but should give you some idea how they work, neither are “Powered “ electrically


Doug

 

[THAW]

I was just thinking 2.0 e-torque too.

2019 2.0 is almost certainly eTorque.

 

[Zandcwhite]

Etorque for sure, if the 12v battery isn't charging it's got to be a problem with the 48v battery, DC to DC inverter, or belt start generator, all of which are covered by the 8 year 80k mile emissions warranty. The 12v battery however isn't covered. The smart move to avoid a costly tow and repair bill is swap the 12v battery and see what happens. If all is well it was just a bad battery. F it isn't charging/ starts to drain, it's covered. All the other issues are just the weird symptoms of low voltage in a modern vehicle.

 

[Utahlasvegas]

Interested in what’s going on here. I didn’t know the 2.0L didn’t have the auxiliary battery in it, never looked into their config. Would have been my first and only guess based on how the entire vehicle becomes bipolar when it fails.

I’m starting to think it’s a bad alternator. It seems like the best guess based on what I’ve read. I have 80,000 miles on the Jeep, so it’s a bit earlier than normal, but I do live in one of the warmest towns in the country.

 

[Utahlasvegas]

I was just thinking 2.0 e-torque too.

How old is the main 12v battery? Looks like an aftermarket that's in there. Tried having it tested yet?

It’s about 13 months old.

 

[Zandcwhite]

I’m starting to think it’s a bad alternator. It seems like the best guess based on what I’ve read. I have 80,000 miles on the Jeep, so it’s a bit earlier than normal, but I do live in one of the warmest towns in the country.

If it has etorque it doesn't have an alternator. Look under the drivers side of the vehicle. If there's a skid plate and big box opposite the gas tank, it is etorque and that's the 48v battery.

 

[NWJeepr]

It’s about 13 months old.

Yep. Doesn't mean anything, batteries can just go bad. I'd say it's suspect until proven innocent

 

[Zandcwhite]

Yep. Doesn't mean anything, batteries can just go bad. I'd say it's suspect until proven innocent

And it's a 5 minute fix that costs less than 1 hour of diagnostic time at the dealer. Odds are it is the fix, if it isn't you're only out $150 and your Jeep has a brand new battery.

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