Looks like a dead battery, mabey? key fob will not work, light is not blinking on dashboard (security) can not get inside. 2004 model, on-star is analog, so it is not active.

well you can't (ignition key)
not old doors fail unlock or ignition key, both are secure.

the IMMO lamp means key is bad or 3 modules behind it are bad.
car came new with 2 good keys.lost the 2nd ?
never have just 1 or 2 keys have 3.
in USA we (DIY) can make 3 and up to 8 or more
if 2 are good.


the battery in the fob only runs the buttons not the key
the key is passive, the key slot uses RF active radio
to talk to the passive key
the cars main battery must be good

wow, not told yet what the key does,
does the engine crank fast or not./
most immo block injectors,
did your key block cranking too?

try to post more clearly
I take 1 of 2 keys and insert it in the ignition= key slot
i turn the key to ON and cranks fast but the IMMO lamp flashes wrong, (my users manual told me what to do)
so do it.
all my jeeps all block fuel injection IMMO failed
I have 4 keys, 2 from jeep new, car, and 2 more I made DIY
\the USA manual tells how to make key3 to8.
but the canada car you can not do that. by their laws there.

be clear next time
doors do not unlock (any) or some (coin cell dead)
engine will not start???? NOT TOLD yet.
IMMO lamp not happy

It's possible that the key fob battery needs to be working in order for the key switch to function properly, especially if your vehicle has an electronic security system. Some key fobs are designed to work in conjunction with the vehicle's immobilizer system, which prevents the engine from starting without the correct key fob being present. If the key fob battery is dead, it may prevent the immobilizer system from recognizing the key and allow the engine to start.

However, there may be other reasons why the key switch is not working, such as a faulty ignition switch, a blown fuse, or a dead starter motor. If you have already confirmed that the battery is fully charged, you may need to have your vehicle inspected by a qualified mechanic to diagnose and repair the problem.

1. How do I program my Dodge key fob without working one?"); display: inline-block; height: 24px; width: 24px; margin-top: -1px; transform: rotateZ(-180deg);">
   How do you program a key fob without original?
   
   1. Replace the batteries inside the key fobs.
   2. Get inside the car.
   3. Turn on the ignition.
   4. Press the lock button on the remote key.
   5. Listen for a Lock Sound.
   6. Programming additional remotes.
   7. Turn off the ignition.
   8. Step out from your car and test the result. How to program my Chrysler key fob without working one Turn the ignition key to Accessory or "ACC". Turn the ignition key off again, and the door locks will cycle once. Press any button on the key fob 3 times in a row to program it. The door locks will cycle once again once programming is complete. https://northcoastkeyless.com/2008-chrysler-300-keyless-entry-remote-fob-programming-instructions/ the instructions to [program a fob are that you need two or need to have dealer or approved locksmith

Is your battery fully charged enough to start the engine?

Locate your second key fob -
Try using that key fob -

if it does not work, and you can verify the Batteries in both Fob's are good - it could be a couple different things.

1. your security system control box may be 'bad'.
2. their is a 'ring' around the key area that are notorious for going bad and preventing the car from starting - however...they don't prevent the key fob from remotely opening the door locks.
3. The power feeding the security system is interrupted (blown fuse, etc) -

I would do the following:

1. Check the second fob and see if it works - If it does you have a bad #1 key fob (or battery).
2. Check ALL of the fuses (in the dashboard Drivers side access panel) AND under hood - Check even those not labeled security - as there are often fuses that feed more than one item, but are only labeled for one item.
3. Try going inside the car, shut all the doors, and lock/unlock the car five or six times using the interior control - I believe this is supposed to reset the unit.
I could be wrong - you can look this up. It might be that you have to do this with the key fob but I can't recall.

Give those things a shot. Also, make 100% sure all of the doors, hood, trunk, etc are fully closed.

I'd just about bet you have a bad key fob - finding #2 is the key here.

Beyond that - it's probably a trip to the junkyard for a new security module and matching set of key fobs - But long before getting involved in that - I'd bet you have a bad key fob or blown fuse -

Security Modules and key fob's are not universally replaceable, are extremely difficult to work with (for those without VIDA [Volvo Diagnostic software] and programming capabilities) and have to be programmed to work with the control unit to which assigned.

what you are missing is that the key fob relates to the immobiliser that has a corrupt program from the dead battery. The keys will be ok so use a scanner to reset the immobiliser in the cpu program. Just reset the ecm and the immobiliser will reset

Be sure to use the correct battery, properly in place, clean the key contacts , See owner's manual for additional information.
There are specialized locksmiths for car keys

Security has been triggered. Usually all you have to do is insert the key in the ignition and turn it on to disable the security. Check or replace the battery in the FOB and also have it check for frequency output.

The lighting control module maybe wet is the pats light blinking and it won't start?

Hi, You need to separate the fob part from the key. This is done by using a flat head screwdriver in the slot provided. The slot is mid way on the track that the key folds into. Once you have the key split the fob can then be split , the battery is inside.