2019 JLU Starting Issue

[RandyMan992]

Hello everyone, I have a 2019 JLU. I replaced the battery last year and currently the battery reads between 13-14v. However, when I go to start it, it takes a couple of times hitting the Start button to start the engine. Any suggestions?
Additionally, the Park Sense will be temporarily intermittently.

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[garyji]

Pretty toasty in PHX. What battery?? Top tier, or cheap-O?? Did you change the Aux also, if you have one?? You didn't mention eTorque or not.

G.

 

[RandyMan992]

Pretty toasty in PHX. What battery?? Top tier, or cheap-O?? Did you change the Aux also, if you have one?? You didn't mention eTorque or not.

G.

Very toasty in PHX lol. It’s a Duralast PlatinumAGM / Battery. So I’d say a mid tier battery. I Haven’t replaced the AUX battery. Nah, no Etorque just a 3.6 liter V6 engine.

 

[dsgrey]

What does a load test show on that battery? Voltage really doesn't say much about it's ability to start. I've had plenty show 13+ volts but only show 60% of rated CCA with a load test.

 

[SBLACK502]

Both batteries should have been replaced at the same time. It’s a very common issues with these jeeps and the dual battery and it’s a 2019.. I would definitely replace it

 

[THAW]

Anything much higher than 13 volts is too high for an AGM resting voltage (with surface charge removed). I'd guess the "13-14v" is with the engine running? if so, that's the alternator/system voltage which doesn't reveal much useful information about the SOC/condition of the batteries.

Leave the hood open with the Jeep ignition off, and check the voltage with a multimeter after the Jeep sits for an hour or so (i.e. after all the electrical systems go to sleep).

 

[Bob Burd]

The aux battery is almost certainly bad after 5yrs.

 

[58Willys]

Have both batteries load tested separately; if one is bad, replace both.

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