What do I need to disconnect in order to reset the CANBUS?

[Spank]

The GPS on my UConnect has stopped working completely, resulting in it picking up no satellites and my navigation telling me I'm tens of miles away at zero altitude. The radio itself is most likely the problem since the antenna is still able to acquire Travel Link data and Sirius XM stations. However, just to make absolutely sure I've covered every avenue before having to potentially replace it, I want to force a total reset on the CANBUS and see if that doesn't possibly resolve the issue. It's probably futile, but it doesn't hurt to try.

Another thing I noticed prior to this problem was my UConnect being unable to properly update its file cache contents from my USB drive for music. For example, if I use voice command to tell my radio to play a certain song, it can't seem to do it with about a quarter of the music on the drive. The resulting error causes it to just play the first file on the device. I don't know how much of this is controlled via the radio itself versus the CANBUS, but resetting the UConnect and switching USB devices makes no difference.

Whether or not these two are related, I'm just not sure how much of this functionality is controlled by the radio versus the Jeep's computer.

I'm treating this like a typical common computer problem: disconnect the power, reset, and reboot. That being said, can I get away with that by unplugging just the battery or do I need to disconnect the auxiliary battery as well?

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[jludave]

That being said, can I get away with that by unplugging just the battery or do I need to disconnect the auxiliary battery as well?

You'll need to disconnect both.

 

[Ma$$iveDebtAche]

I may be wrong, but I thought GPS and SiriusXM use different antennas.

 

[Spank]

You'll need to disconnect both.

I figured as much. Thank you!

I may be wrong, but I thought GPS and SiriusXM use different antennas.

I thought they were a combined unit, but if they aren't, that's all the more reason to just reset everything and see what happens.

 

[jludave]

I may be wrong, but I thought GPS and SiriusXM use different antennas.

They do not. It is one dual mode antenna used both both. WiFi with the 8.4" radio adds an extra antenna.

 

[JeepCares]

The GPS on my UConnect has stopped working completely, resulting in it picking up no satellites and my navigation telling me I'm tens of miles away at zero altitude. The radio itself is most likely the problem since the antenna is still able to acquire Travel Link data and Sirius XM stations. However, just to make absolutely sure I've covered every avenue before having to potentially replace it, I want to force a total reset on the CANBUS and see if that doesn't possibly resolve the issue. It's probably futile, but it doesn't hurt to try.

Another thing I noticed prior to this problem was my UConnect being unable to properly update its file cache contents from my USB drive for music. For example, if I use voice command to tell my radio to play a certain song, it can't seem to do it with about a quarter of the music on the drive. The resulting error causes it to just play the first file on the device. I don't know how much of this is controlled via the radio itself versus the CANBUS, but resetting the UConnect and switching USB devices makes no difference.

Whether or not these two are related, I'm just not sure how much of this functionality is controlled by the radio versus the Jeep's computer.

I'm treating this like a typical common computer problem: disconnect the power, reset, and reboot. That being said, can I get away with that by unplugging just the battery or do I need to disconnect the auxiliary battery as well?

Hi Spank,
Sorry to hear about the trouble you're having. If you do end up visiting a dealer to have these concerns addressed, we're available here via private message if you need additional assistance.

Lydia
JeepCares

 

[stevenc]

The GPS on my UConnect has stopped working completely, resulting in it picking up no satellites and my navigation telling me I'm tens of miles away at zero altitude. The radio itself is most likely the problem since the antenna is still able to acquire Travel Link data and Sirius XM stations. However, just to make absolutely sure I've covered every avenue before having to potentially replace it, I want to force a total reset on the CANBUS and see if that doesn't possibly resolve the issue. It's probably futile, but it doesn't hurt to try.

Another thing I noticed prior to this problem was my UConnect being unable to properly update its file cache contents from my USB drive for music. For example, if I use voice command to tell my radio to play a certain song, it can't seem to do it with about a quarter of the music on the drive. The resulting error causes it to just play the first file on the device. I don't know how much of this is controlled via the radio itself versus the CANBUS, but resetting the UConnect and switching USB devices makes no difference.

Whether or not these two are related, I'm just not sure how much of this functionality is controlled by the radio versus the Jeep's computer.

I'm treating this like a typical common computer problem: disconnect the power, reset, and reboot. That being said, can I get away with that by unplugging just the battery or do I need to disconnect the auxiliary battery as well?

I'm experiencing the same issue within the last week or so. The compass also showing wrong direction. Are you able to resolve it? I hate to bring it in to dealer considering what's going on now.

Steven
Toronto

 

[jludave]

I hate to bring it in to dealer considering what's going on now.

Dealership service departments (sales showrooms are closed) are open and taking necessary precautions. They are considered essential businesses.

 

[Spank]

I'm experiencing the same issue within the last week or so. The compass also showing wrong direction. Are you able to resolve it? I hate to bring it in to dealer considering what's going on now.

Steven
Toronto

Unfortunately, no. The radio will probably have to be replaced.

 

[stevenc]

Unfortunately, no. The radio will probably have to be replaced.

Ok. Thanks for the update.

Steven
Toronto

 

[jmcdtucson]

I've had trouble with the GPS at times and reset it without removing all power. This thread has information that may help: https://www.jlwranglerforums.com/forum/threads/steps-on-how-to-reset-jl-uconnect-4-system.3201/

 

[stevenc]

I've had trouble with the GPS at times and reset it without removing all power. This thread has information that may help: https://www.jlwranglerforums.com/forum/threads/steps-on-how-to-reset-jl-uconnect-4-system.3201/

I have tried the voice command + phone buttons to no success.
Haven't tried the cold + hot buttons yet.
Which method works for you?

 

[jmcdtucson]

I have tried the voice command + phone buttons to no success.
Haven't tried the cold + hot buttons yet.
Which method works for you?

Not sure - I think the voice plus the driving around in circles part that you'll find somewhere in there. It resets the compass. I posted on about page 4 of that thread but didn't detail exactly which reset sequence I used. It took a while to fix itself after i did that.

 

[Bay Sailor]

The GPS on my UConnect has stopped working completely, resulting in it picking up no satellites and my navigation telling me I'm tens of miles away at zero altitude. The radio itself is most likely the problem since the antenna is still able to acquire Travel Link data and Sirius XM stations. However, just to make absolutely sure I've covered every avenue before having to potentially replace it, I want to force a total reset on the CANBUS and see if that doesn't possibly resolve the issue. It's probably futile, but it doesn't hurt to try.

Another thing I noticed prior to this problem was my UConnect being unable to properly update its file cache contents from my USB drive for music. For example, if I use voice command to tell my radio to play a certain song, it can't seem to do it with about a quarter of the music on the drive. The resulting error causes it to just play the first file on the device. I don't know how much of this is controlled via the radio itself versus the CANBUS, but resetting the UConnect and switching USB devices makes no difference.

Whether or not these two are related, I'm just not sure how much of this functionality is controlled by the radio versus the Jeep's computer.

I'm treating this like a typical common computer problem: disconnect the power, reset, and reboot. That being said, can I get away with that by unplugging just the battery or do I need to disconnect the auxiliary battery as well?

I'm having the exact same issue as well. Are you still experiencing the problem or did it correct itself? I'm pretty sure it is a computer issue as well.

 

[Spank]

I'm having the exact same issue as well. Are you still experiencing the problem or did it correct itself? I'm pretty sure it is a computer issue as well.

I'm afraid not. I've actually been in contact with some of the tech support folks over at Infotainment.com as I've used them for replacement equipment on other vehicles in the past and they're pretty much thinking the same thing I am. The aircard inside the unit that handles GPS input is toast. The entire unit has to be replaced.

Fortunately, replacing these things is incredibly easy. Unfortunately, they're incredibly expensive. I'll have to stick to Android Auto for now until I decide what to do. It figures this happens just miles after my bumper-to-bumper warranty expires.

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