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RADIO/HEATER


xraygirl

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My 2014 Journey all of a sudden does not have radio/Uconnect (the screen is off) and the lights flash on the heater/AC buttons.  the heat and AC can be adjusted by using the up and down nobs.    Any ideas that aren't gong to cost a million $ would be greatly apreciated

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OhareFred's got the solution. This happened to me twice.

Disconnect the negative terminal from under the hood. Wait 30 minutes. (why the negative? Because it's easiest to remove, and has a neat plastic loop that keeps it neatly in place, near the grounding post).

 

As a bonus info;
IF this issue is reoccurring, and eventually results in being unable to start or sustain the engine running: It's FCA's friendly way of telling you the battery needs replacement.

 

Welcome to the fourm!

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  • 6 years later...

did anyone figure out the issues with the stereo and AC controls not working after disconnecting battery. when my wife tried to start her car it was majorly glitching all the dash lights flashing on and off and would not start. I disconnected the battery for half an hour or so and when I reconnected it the radio and the AC controls do not work. also the instrument cluster is blanked out with simple arrows then when you click the arrows it shows what it should be such as miles per hour tire pressure etc. but the main menus are blanked out. I then left the battery disconnected overnight and when I came back this morning I put it on run and let it sit there for a minute or two thinking that it would load all the sensors etc and they still did not come on. this is an aftermarket Android radio but everything was working fine before the glitching and disconnecting of the battery. I see that other people also have had this problem and what did y'all do to fix it. I have alpha OBD but I can't figure out anything in there that would help either. thanks in advance for your help. 

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On 7/26/2026 at 8:51 AM, Horseless Carriage said:

did anyone figure out the issues with the stereo and AC controls not working after disconnecting battery. when my wife tried to start her car it was majorly glitching all the dash lights flashing on and off and would not start. I disconnected the battery for half an hour or so and when I reconnected it the radio and the AC controls do not work. also the instrument cluster is blanked out with simple arrows then when you click the arrows it shows what it should be such as miles per hour tire pressure etc. but the main menus are blanked out. I then left the battery disconnected overnight and when I came back this morning I put it on run and let it sit there for a minute or two thinking that it would load all the sensors etc and they still did not come on. this is an aftermarket Android radio but everything was working fine before the glitching and disconnecting of the battery. I see that other people also have had this problem and what did y'all do to fix it. I have alpha OBD but I can't figure out anything in there that would help either. thanks in advance for your help. 

We have now gotten to the root of what caused the original glitching. it was a broken battery cable. That was replaced in fixed. but now the system is still not communicating with the instrument cluster, the radio, the AC controls and remote start is not working. 

 

I'm getting this trouble code:   

 

 

Diagnostic trouble code (DTC) U0147 on a Dodge Journey means the car's computer has "Lost Communication with Gateway 'B'". In Chrysler and Dodge vehicles, this "gateway" function is typically built directly into the radio/infotainment and HVAC control unit, meaning the main computer can no longer "talk" to your radio or central dash interface. 

 

Does anyone know how to fix it? 

 

I have worked on it for several hours to no avail. and a mechanic has worked on it for 4 hours and cannot figure it out either. 

 

Does anybody know how to recreate the handshake between the computer and the can bus that you throw the stereo HVAC remote start etc. I have tried all of the solutions I've seen thus far online. if any of you have solved this problem please let me know. thanks in advance for your time. 

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Would be a pain, but if you have the oem radio try plugging it back in. Was the android box installed with an interface box to enable heated steering wheel, 120 volt inverter, anything without physical switches ? Try unhooking it if you added one to dash harness.

 

Locosiete on this site has battled with canbus. Try messaging him. More electrical skills than the rest of us. He disconnected main canbus feed, then traced back to find his problem. Search his posts, clever guy. Has a heavily modified Journey, killer sound system.

 

 

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