Question 1

I lost all my keys to my 2019 Chrysler 300. Can you still make a new one?

Accepted Answer

Yes, and all-keys-lost is one of the more common calls on late-model Chrysler vehicles. The job involves pulling the security PIN from the vehicle's onboard modules, wiping all previously stored key data, and programming fresh fobs from scratch. On a 2019, that process requires professional diagnostic equipment -- there is no workaround that skips the module communication step.

The reason some owners end up waiting weeks at a dealer is parts ordering and scheduling backlogs, not the programming itself. The actual programming, once the tools are connected and the PIN is confirmed, moves pretty quickly. A mobile setup handles this at your location, so you skip the tow and the wait.

One thing to sort out before the job: if you had two fobs and both are gone, those get erased from the system. Any fob that shows up later -- including one that turns up in a coat pocket -- will not start the car until it is re-enrolled.

Question 2

Do I need to tow my 2019 Chrysler 300 to the dealer if I have no working key?

Accepted Answer

Not if you go the mobile route. A locksmith with the right diagnostic equipment can do all-keys-lost programming at your location, whether that is your driveway, a parking lot, or a storage facility.

Dealers will tell you the car needs to come in, and for their setup that is true -- their software requires a physical connection in the service bay. But mobile tools access the same diagnostic port. The vehicle does not need to move.

Where owners run into trouble is waiting. Forum threads on late-model Chrysler 300 ownership are full of stories about vehicles sitting at dealerships for two or three weeks during key programming jobs, sometimes with parts being ordered more than once. Coming to you means the job gets done in one visit, at the car, the same day.

Question 3

How long does an all-keys-lost replacement take on a 2019 Chrysler 300?

Accepted Answer

On site, about 30 to 45 minutes from the time I connect. The PIN read, key erase, and new fob registration each take a few minutes, and there is a short timed sequence built into the process. Add in physical testing -- every button, a few remote starts, range check -- and you are looking at under an hour in most cases.

The dealer timeline is a different story entirely. Scheduling, parts sourcing, and occasional escalation to manufacturer tech support can stretch a job that takes 40 minutes of actual work into a multi-week ordeal.

Question 4

My 2019 Chrysler 300 fob works fine some days and fails others. What causes that?

Accepted Answer

Intermittent behavior on these fobs usually comes down to one of three things: a CR2032 that is reading borderline on voltage, a contact inside the fob housing that shifted after a drop, or radio frequency interference near where you are standing when it acts up. Storage facilities and parking structures with dense concrete can kill range on any fob.

Start with the battery even if the fob is not fully dead. A cell can test at acceptable voltage but drop under the load of an actual RF transmission. If swapping the CR2032 does not clean it up, the next step is opening the fob and checking that the circuit board is seated correctly against the battery contacts. If both of those check out and it still drops out randomly, the receiver on the vehicle side is worth looking at -- but that is less common than a tired battery or a slightly loose internal connection.

Question 5

Can I just buy a fob online and have it programmed, or does it have to be a dealer part?

Accepted Answer

An aftermarket or used fob that matches the correct button count and receiver frequency can be programmed to your 2019 Chrysler 300 -- it does not have to come from a dealer. What it cannot do is program itself. Any fob, dealer-sourced or otherwise, needs to be enrolled to the vehicle through diagnostic equipment before it will operate the locks or communicate with the immobilizer.

If you already bought one online, that is fine. Bring it to the job and I will pair it. Just confirm it matches the factory fob ID and button configuration on your original before you buy -- fitment matters more than brand.

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