2018 JLU Won't Start

[Kyle's Sahara]

Having problems starting my 2018 JLU Sahara 3.6L with manual transmission. The vehicle has about 50K miles on it, I've owned it since new. Yesterday morning I tried to start my Jeep as normal but it didn't start at the push of the button. It made a sound like the starter tried to start but didn't finish, I pushed the button again and she fired right up so I shrugged it off. When leaving working, I pressed the button and could hear the starter try to engage but not start the engine. Sort of a clunk sound that repeated a couple times. It wasn't the rapid clicking sound of a dead battery, but I tried jump starting for more than an hour using a couple different vehicles to no avail. I pulled the battery and took it to Autozone for testing. The battery is 2.5 years old and tested out as a good battery on two different devices. I took it back and reinstalled in the Jeep, and the Jeep fired right up like nothing was wrong. It is however now showing a check engine light. This morning it gave me same reaction I started the day off with yesterday. Did not start on first attempt, but started on second try. I went to Autozone and had the code read: U1442 Implausible Data Received from Driver Presence Detection Module.

Any ideas or experience from anyone on what this means? Any ideas on next steps?

Sponsored

 

[Bob Burd]

Did you check the small (aux) battery?

 

[mwilk012]

Replace both batteries.

Since you already touched it, check the high amp fuse array.

Sponsored