The trunk will not open?

Yep, so what happens is the battery needs to be replaced, once they go dead it takes them out, they don't like to go dead FYI. This car has a specific point designated for jump-starting the vehicle under the hood, looks for the small red cover to connect the jumper too. Also, choose a good ground as well. Here are the instructions on how to jump the car:

Notes/information on start assistance (jump starting)
REP-ALG-RAE3812-120FRE

Do not start the engine with the help of starting sprays.

Preparation:

Conform with the following when starting the engine with a jump-starting cable.

Ensure that the jump-starting cable wires are of appropriate cross-section size.

Only use fuse-protected jump-starting cables.

Check whether the current-supplying battery has 12 V voltage.

If the engine is started from the battery of another vehicle, ensure that there is no contact between the bodies of both vehicles.

Important!
Never touch electrically live ignition system components: high voltage - danger of injury!

If the battery in the vehicle supplying power is weak, start the engine of this vehicle and let it run at idling speed.

Operation:

It is essential to conform to the procedures so as to avoid injury to persons or damage to parts.

Automatic transmission: select drive position ”P”, apply parking brake.

Manual transmission: move gear lever to neutral position, apply parking brake.

Ensure that the jump leads cannot get caught in rotating parts, e.g. fan.

First connect both positive poles of the batteries with one jump starting cable (red).

Use the battery positive terminal in the engine compartment for vehicles with the battery in the luggage compartment.

Then use the second jump starting cable (black) to connect the negative post of the current-supplying battery with the earth/ground point (not the negative pole or the body) of the vehicle to be started.

Important!
Do not connect the second jump starting cable (black) with the negative pole of the battery in the vehicle to be started. Produced gas could be ignited by sparks.

Risk of explosion!

After the engine of the vehicle to be started has fired, first disconnect the jump starting cable between the negative pole and the earth/ground point. Then remove the starting cable from the positive poles. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.

But how can I open the trunk? I tried opening it manually, but the cable brok.e what other ways are to open the trunk?

Yes, the cable is broken, that is why I would try to use the electrical portion of the latch by attaching the jumper cables to the power lug under the hood, it should have a red cover of it on either the right or left fender well. Push down on the trunk lid while you are opening it to help the latch open, then you can repair the cable release or replace the latch. Check out the images (below). Let us know how it goes.

Okay, when I use the trunk release button on the remote it doesn't work the trunk won't open, but I will try how you said it today and will let you know.

Sounds good :)

I let my battery get low due to listening to the radio, Dashcam and cell phone with the car not running. I opened my trunk and shut it when I was done. The next time I tried to open it, it would not open. So, I googled trunk won’t open and it is due to a low battery. They suggested trying all the buttons. Key fob, foot kick under back, trunk release and valet lock, which I did. Still nothing. So, then it said to go through the back seat booster seat and reach in and pull the emergency release. The opening is took small so I got a broom and finally opened it. I made sure the battery was charged. The trunk opened a couple more times. Good I thought problem solved. Nope I had my car detailed and went to open the trunk. Stuck, got the broom and tried to release the emergency trunk release. This time it would now not open. I ended up stretching the release cord past its limit
None of the other way work either, there is no key unlock available. Any suggestions on how to open the trunk or where to take it to get fixed? I drive for Uber and some riders have luggage.

So, I tried doing exactly what you said to do, and the trunk still doesn't open. I tried to open it with the key, it doesn't click, it turns but that's all it does. But one side of the trunk it looks higher than the other side also the cable came out completely but when I press the button I hear a click but nothing happens what can I do to open the trunk also where are the fuses located at.

Push down and lift up while working the latch is all you can do. There is only one latch. Can you please shoot a quick video with your phone so I can hear the noise? that way I can tell for sure what's going on.