No lights on Climate Control?

Okay. We need to let the vehicle sit overnight so that it can go through a sleep cycle and then allow the modules to boot back up. This vehicle operates off what is called a CAN network. That means the modules communicate with each other through this system and it sounds like there is some "confusion" on the network.

This may be caused by the addition of the sub but I doubt it.

Here is a guide that talks more about this system:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

What I am hoping that after the body control module powers down and goes to sleep (that is what it is called, going to sleep) and then powers back up that the configuration will be correct.

If it is not we may need to contact the dealer and ask they add a sales code for the sub so that the vehicle knows it is there as it just sounds like each time you disconnect the battery that something else stops working. That is a sign of a configuration issue. However, let's try this first and see what happens. Thanks

Okay. This may be a coincidence but we may have to unhook everything you installed when this happened but let's not go there yet.

Can you tell me everything you put in? Was it just a sub and wiring or were there other components as well?

Also, the other thing I am thinking is we just had an issue when connecting the battery again and it has nothing to do with what you put in the vehicle.

Lastly, does the vehicle actually start or it says the key is not recognized and does not start but all the functions work like the locks and remote start? Just trying to fully wrap my head around what could have happened. Thanks

Okay. I think this has more to do with the battery disconnect then the addition of the sub.

So the way this key works is the vehicles has antennas placed around the vehicle and it looks at signal strength of the key on each antenna and it uses this to triangulate where the key is. It needs to see the key inside the vehicle in order to start the vehicle. Can you get a picture of where this key is and what the message is stating?

Does it say it is not recognized or not detected? The fact that you can put it in the cup holder and the truck sees the key tells me it is not detecting it. There is an antenna just below the cup holder so you are basically placing the key directly on top of the antenna and so it is able to see the signal strength strong enough to know if it is inside the vehicle.

I suspect this vehicle is still under basic warranty since it is about a year old and such low mileage? If it is I would take it into the dealer and show them what it is doing. Again, I don't see how this would be related to the speaker so it should be covered. Plus you used all OEM parts so they can't say it is some aftermarket part.

It would be a pretty big coincidence but I think that is what we have. The climate control not working was related to the battery disconnect and that was corrected. So again, if anything this is related to disconnecting the battery but I can't see how it is related to the speaker.

It is highly unlikely in your situation that this is a battery issue in the fob not only because those batteries have about a 7 year life span on them but as you said, both are doing it.

You have most likely an antenna issue. One more question, when you installed the sub, where did you put it and did you happen to take any connectors apart? I am wondering if we didn't get one of the antenna connectors completely snapped back together.

The reason I ask, is there is no question that at this point the vehicle is not able to locate the key as being inside the vehicle so it gives you this message. So that means we have either an antenna issue or module issue and it would make sense if we unhooked one and didn't get it back together.

Let's chase this down before you go to the dealer because if they find it, they will charge you as that is not a defect. So let's go from there and if this is not it then I am sure it would be warrantable.

Okay. If that is the case, let's start at the very beginning of this issue because at this point we are going blind trying to figure out possible issues. If you have no power there, then I suspect you have a code that will point us to where we need to go. Specifically a B code if I am correct that this is an antenna issue.

Here is the testing for your issue of No Key Detected. As you can see with this testing there are codes that go with it so let's see what we have in the truck and then we can continue to with that specific testing.

Yes. Sorry meant to include a guide that will help with that.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

If you don't have one, most parts stores will do this for free. Some have stopped offering a free service but I am sure there are some that do in your area.

Okay. I don't have any question at this point that this is not related to what you installed. However, if you look at the second page I attached before and you will see where it says if there are no DTCs to proceed with testing. Basically it is asking to check key fob operation. Does it lock and unlock? If so, try to start the vehicle. If it does not start then it wants you to program the keys again. You need a scan tool that can do that so it may need to go to the dealer if your tool doesn't do that.

Sorry. I jumped over that. I can't find any documentation on it but I think that is because you are starting in a limited mode due to it not recognizing the key.

I know other OEMs have the same thing. Like with Chrysler vehicles, if your key fob battery is drained, you can take the key and hold it against the button to start the vehicle and it will start but you lose some options and get a message on the cluster. This is basically to force you into the dealer to get it addressed. I believe that is the reason for this but again, I can't confirm this because there is no documentation on it in the manual.

Okay. That process is not listed in the manual which is not surprising because those are intended for the dealer and not the DIYer.

However, that is good info because if programming the keys does not solve it then it is the module most likely that is at fault.

This is one of those situations that I cannot explain why it happened but it appears to be a coincidence or something happened when connecting the battery to cause this to fail. We have established pretty clearly that what you have installed is not the cause.