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No engine crank

2021 Jeep Compass Trailhawk 72981 miles
Tries to crank but I just hear one click then a second click battery brand new fuses all good
phoebe84 from United States 2 years ago  
PH
Rank 8
4 reports 
phoebe84 from United States 2 years ago
Has code U0100 lost communication with electronic control module/power train module
1/3 confirmed
2/3 pending
3/3 permanent
phoebe84 from United States 2 years ago
Erased code but still remains only now it's
U0100 1/1 permanent

😫
Snypa1 from United States a year ago
I had the same thing recently. Changes wiring harness and the eom but still nothing. Changed the relay box and. Starter and fuel pump and have it a tune up but still nothing. Has a brand new battery but still nothing.
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Best answer (according to phoebe84)
phoebe84 from United States a year ago
Bought both brand new batteries, the start stop and the main battery (must be a gel runs about 260-300$) still wasn't cranking finally called for a tow. Tow guy asked if I simply needed a jump, I explained it was new and ensured it wasn't the problem. Wrong!
I went inside to grab something out of my house and when I came out he had jumped my battery and my truck was running. Miracle or common sense lol
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