Can someone do me a huge favor and take the little plastic cover off the positive side of the batter and take a pic for me. Check engine light and check forward collioson sensor warnings came on today. Code is U0001. (Canbus) a lot of times this is electrical Gremlins so I thought I would check the battery connections. It looks like to me there is a missing nut. The dealer said they looked at another Jeep and it was not there either so they are sure it is supposed to be like that. It is not the nut on the post but just to the rear of the post. There are 3 or 4 little posts all of them except one has a nut there. (Why would they put a post there with no nut on it?!?)
Battery picture
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Chris_84045
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Hello :
2020 Jeep Compass Latitude 4x4
I have a RED cover
NO bolt or FUSE
Do not understand about the fuse and bolt with or without the nut as the metal plate is a HOT FEED !!!!!!
The RED BATTERY FEED Cable attached, goes thru a 250 amp fuse and feeds the rest of the fuses just like the MAIN breaker in a house panel.
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My cover is black and I have an additional 150 amp fuse (orange), top, left that is not connected to anything.
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Wow, so maybe I'm not crazy! I was changing my air filter just the other day and thought it was odd to have those terminals exposed. I was tearing up the garage looking to see if I had taken it off previously and misplaced it. I'm glad I'm not the only one with that missing. I just tried to order one today. The part for the 2018 was in the range of $20-$30 before shipping. For the 2019 it was only $6, so I took a gamble on the 2019 part. I'll report back if it fits.
When I came across this post yesterday I thought it was super funny that morning I had literally bought and installed the nut.... Sorry
![13774]( "13774")
for anyones Jeep blowing up due to my actions. On the bright side now I know where I can install my aux power cable!
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I think that I have solved this. However, I'm not sure as to the reasoning behind it. Maybe it's a law in some other country. Who knows. I dug around on wiring diagrams and PDFs for the better part of 2 hours.
Long story short, I believe that this fuse is intended for the rear power distribution block in other markets. I've listed my logic with a couple of pictures. I suspect that if you switched the cable from the unfused lug over to the fused lug you'd only be adding a layer of protection for the rear power distribution block. It's either this or it's glow plug fuse for the 1.6L or 2.0L diesel engines over seas that I don't have wiring diagrams for.
Alfa Romeo (part of FCA) uses the same thing that they call a Battery Distribution Unit (BDU) as our vehicles use. At least they do on a 2018 Giulia. If you look close you can see a 175A fuse in the spot that we're all confused about. The picture is actually talking about some weird "pyrotechnic fuse", but you get the idea.
![13902]( "13902")
On the 2018 Giulia, the battery and the BDU are in the trunk. You can see that the 175A fuse goes to the Rear Power Distribution Center and that the unfused lug goes to the Positive Remote Jump Post at the front of the car and connects to the starter, alternator, and other stuff.
![13904]( "13904")
In the Rear Power Distribution Center of the 2018 Giulia, you can see some things that look familiar to some of us such as the Comfort Seat, Driver Lumbar Seat Adjustment, and the sunshade stuff.
![13905]( "13905")
The Rear Power Distribution Center on a 2018 Compass has many of the same things in it. FYI, this is found under the little dish on the driver's side in the rear.
![13906]( "13906")
The only thing is that, at least in the US market, the Rear Power Distribution Center gets fed from the unfused lug on the BDU.
![13907]( "13907")
Long story short, I believe that this fuse is intended for the rear power distribution block in other markets. I've listed my logic with a couple of pictures. I suspect that if you switched the cable from the unfused lug over to the fused lug you'd only be adding a layer of protection for the rear power distribution block. It's either this or it's glow plug fuse for the 1.6L or 2.0L diesel engines over seas that I don't have wiring diagrams for.
Alfa Romeo (part of FCA) uses the same thing that they call a Battery Distribution Unit (BDU) as our vehicles use. At least they do on a 2018 Giulia. If you look close you can see a 175A fuse in the spot that we're all confused about. The picture is actually talking about some weird "pyrotechnic fuse", but you get the idea.
On the 2018 Giulia, the battery and the BDU are in the trunk. You can see that the 175A fuse goes to the Rear Power Distribution Center and that the unfused lug goes to the Positive Remote Jump Post at the front of the car and connects to the starter, alternator, and other stuff.
In the Rear Power Distribution Center of the 2018 Giulia, you can see some things that look familiar to some of us such as the Comfort Seat, Driver Lumbar Seat Adjustment, and the sunshade stuff.
The Rear Power Distribution Center on a 2018 Compass has many of the same things in it. FYI, this is found under the little dish on the driver's side in the rear.
The only thing is that, at least in the US market, the Rear Power Distribution Center gets fed from the unfused lug on the BDU.
I thought there was a 40 amp fuse in the block under the hood that feeds the rear power block? I don't have it in front of me right now to look, but it seems extremely unlikely to me that any auto manufacture would run an un-fused wire from the battery to the rear of the car. Or maybe I am misunderstanding what you are saying.Hudson_Neon said:
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No. You're understanding me correctly, because that's exactly how it is in these vehicles. They run an unfused cable to the back.
I don't want to encourage anybody to do this because of the sue happy society that we live in, but if you feel that strongly about it appears that lots of these Compass' have an unused 150A fuse waiting on a lug.
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My $0.02 as a newbie to Jeep Compass: The OE battery connection variations by FCA as seen/discussed above seems kinda strange for just a 4-yr production vehicle, the Gen2.. Ours is a 2019 Trailhawk, Feb2019 production date; no options. Has same battery config as pictured/described above #41 by VACompass : Red cover, no bolt, no fuse.
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I suspect that yours is how it SHOULD be. What you describe electrically is exactly what the FSM shows for the connections. I believe the red cover is a Trailhawk thing, but not all of them.
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The Red cover was on our New 2020 Compass Latitude 4x4 when purchased from the dealer.
I'm going to have to look for myself, there is just no way. You being a teacher of these things know better than anybody how unsafe an un-fused direct battery line is. Major fire hazard. To have one OEM is totally unheard of in my world. Surely there are standards that simply forbid such a thing for starters, and then there are at least two under-hood fuses (F02 and F07) that refer to sending power to rear distribution units and those make sense to me because there are basically up to two fuse blocks in the back, one of them you only will have if you have the stock trailer tow group and that is what F07 is labeled for. Everyone will have F02 (for the main rear block).Hudson_Neon said:
I have no fuse and a rear power block
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This cracks me up because we have been having a consistent issue of our mega fuse blowing on our Jeep Compass trailhawk 2017. We’ve taken it into jeep with really no help at all just a pretty bill as we’re leaving. My girlfriend thought Jeep just forgot to put the nut back on and wanted to give them an earful but it’s looking like no one has a damn nut. Any idea why this fuse would be continuously blowing?!
this is the set-up on my 21 TH
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So should I not put a nut on there? Having problems with my 2017 Jeep Compass. The battery and alternator are good so I thought maybe it wasn’t getting a good connection due to the missing nut on the 150 amp fuse.
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