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https://www.jlwranglerforums.com/forum/threads/fob-key-detension.15896/post-388127

Check for a blown N3 fuse, you may have blown it at some point during the process.

There's a good use for all those blown fuse arrays, cut off the N7 to N8 flange to use as an N1 to N2 shunt. It will need shimmed with an appropriate thickness washer to compensate for the difference in height of the terminals.

I will add this to my previous comment. Not everything is getting powered during a cold start. Accessories like the heater and radio are not powered during a cold start, unlike an ESS restart where everything is powered. All of the JL/JT battery systems are designed so a that an ESS restart...

In theory yes with healthy batteries, but that doesn't mean that the voltage drop of a single healthy battery is crossing the threshold to be harmful. I think it's the partially discharged batteries that cause the constant system reboots (flashing dash lights) that have the potential to cause...

An etorque engine always cold starts from a single 12V battery as designed by Jeep engineers, I wonder if that's damaging the computer. For etorque ESS restarts, the 12V battery doesn't crank the starter, so computer damaging 12V battery surges aren't an issue.

I should have explained my point better. It's not the battery that determines the charging voltage, it's the PCM that controls the alternator that determines the charging voltage. It appears that the upper limit for the alternator output has gone up with the current firmware version.

I've spent a lot of time monitoring my voltage over the past 7 years. A short commute has led to a lot of 14.7 V charging, but since the last firmware update for the manual transmission recall, I'm seeing a lot of 15.1 V charging.

Do you have an eTorque motor?

I thought your stated goal was to warm the oil to improve the initial cold start oil flow. It looks like that worked based on how the temperature started higher then dropped as the cold engine cooled the oil.

We replaced my retired wife's Cherokee with a Grand Cherokee L when she found she couldn't fit enough car seats in the Cherokee. There were considerable discounts at the time.

The charging voltage is determined by the PCM, not the battery.

It looks like the firmware update also increased the charging voltage.

I'm seeing more 15.1 V charging now that I'm watching it after the clutch recall software update and colder weather started. It used to never go above 14.8 V.

The starter is wired directly to the main battery, how is it the aux battery is what starts the jeep?

Other than the clutch recall software update, I'd be surprised if anyone really knows. I've had it triggered under different conditions.

Since I was already setup to clear the error due to low speed maneuvers triggering the service transmission error for me, I just tested shifting from 6th gear to neutral without the clutch while costing on the off ramp. I tested it 3 times with no errors. And despite reports to the contrary...

There was this awhile back, haven't heard anything lately. https://www.jlwranglerforums.com/forum/threads/jeep-jl-graphics-kits-proline-wraps.26415/post-628146

Something is mechanically detecting what position the gear shift is in because the instrument cluster is displaying the correct gear (even neutral) when I shift through all the gears when the engine is off.

There is a gear position sensor somewhere. If I cycle through the gears without the engine running or touching anything but the gear shift lever, it knows what gear the transmission is in.