Chrysler 300 Key Fob Replacement
Lost the key or need a spare fob for your Chrysler 300? A mobile locksmith comes to you and programs it on-site, same day, well under dealer pricing.
Need a Chrysler 300 key fob replaced? We come to you in North Dallas, cut and program a new fob to your VIN on-site, usually same day. You skip the tow and the dealer markup, and the car drives off ready to start.
- Key or fob cut to your VIN
- Programmed & tested on-site
- Mobile: we come to your car
- Usually well under dealer pricing
*Flat estimate for a standard transponder key. Proximity / push-to-start smart fobs cost more, and the exact price is quoted on the call before any work.
Chrysler 300 Keys & Fobs
The Chrysler 300 used two main systems over its run. Earlier cars came with a remote-head key that turned a standard ignition cylinder, with a transponder chip in the head and a separate lock/unlock remote. Most 300s, though, run proximity smart fobs with push-to-start. Newer model years moved to higher-security encryption, which is why some of those fobs cost more and take longer to program. Either way, a fresh fob has to be cut to the door/ignition (laser-cut blade on the smart-key cars) and then registered to the car's immobilizer through the OBD port. Our programmers pull the fob data by VIN and write it to the security module, so the key both turns the car over and works the remote functions.
A common one on the 300: the push-to-start fob stops working at range or only starts the car when you hold it right against the START button. That's almost always the little CR2032 coin cell inside the fob running flat, not a dead fob. Pop it open, drop in a fresh battery, and it usually wakes right up. If a new battery doesn't fix it, the rubber START button pad or the fob board can be worn, and at that point a replacement fob programmed to your VIN is the real fix.
Chrysler 300 Key Fob FCC IDs
Flip your fob over: the FCC ID is printed on the back of the case. Find it below, or just read it to our dispatcher. It tells us the exact remote your Chrysler 300 takes before the van rolls out.
| Years | Key type | FCC ID |
|---|---|---|
| 2008-2010 | FOBIK key | IYZ-C01C |
| 2011-2023 | Proximity smart fob | M3N-40821302 |
Spare key with a working key in hand: from $75. Full replacement, no key at all: from $189. Smart and proximity fobs price above basic chip keys; the exact flat number comes with your VIN on the call.
Trim and market can change the fob, and several IDs often fit one model year. We confirm the exact part by VIN on every job, so a mismatched guess never reaches your driveway.
Frequently Asked Questions
Yes. An all-keys-lost 300 takes longer than a spare because we have to pull key data by VIN and put the immobilizer into learn mode, but we do it on-site. Bring the title or registration so we can confirm you own the car.