Dodge Durango & Charger: FOBIK or Proximity Key? Granbury, TX

Two Mopars from the same decade can need two completely different keys at two completely different prices, and most owners cannot tell which they own until somebody quotes them. Call or text (817) 214-2934 and we will identify it from the VIN before anyone drives.

Quick Answer

Dodge Durangos and Chargers from roughly 2011 onward use one of two systems: a FOBIK — a rectangular fob that inserts into a slot and twists like a key — or a true proximity smart fob with push-button start that stays in your pocket. As of August 2026 in Granbury, a spare FOBIK generally runs $120–$250, a spare proximity fob $150–$350, and all keys lost $185–$325 on FOBIK vehicles or $200–$500 on push-button vehicles. Both are programmed at your location without a tow. Telling them apart takes ten seconds and changes the quote significantly.

How to Tell Which One You Have in Ten Seconds

Look at what you do to start the vehicle.

If you push a rectangular plastic fob into a slot on the dash and twist it, you have a FOBIK. There is no metal blade sticking out of it in normal use — the whole fob is the key. A separate emergency blade usually slides out of the side for the doors.

If you keep the fob in your pocket and press a START button, you have a proximity system. The vehicle detects the fob inside the cabin and the button becomes live.

If you insert a traditional metal blade and turn it, you have an older bladed transponder setup, common on earlier Durangos and Chargers before the FOBIK era.

That is the entire diagnostic. It costs nothing and it is the first question any competent locksmith will ask you, because the three systems are programmed differently and stocked differently.

What Each System Costs

Your system	Spare key (August 2026)	All keys lost	Vehicle drivable for a spare?
Bladed transponder key	$80–$185	$185–$325	Yes
FOBIK, insert and twist	$120–$250	$185–$325	Yes
Proximity fob, push-button start	$150–$350	$200–$500	Yes
Emergency blade cut only	Low end of range	N/A	Yes
Fob coin-cell replacement	$10–$50	N/A	Yes
Immobilizer or module programming	$120–$500	—	Varies
Ignition cylinder repair, bladed vehicles	$180–$400	—	No, during the work

Every figure is quoted by VIN before a van rolls, and it does not change on arrival. Dealer pricing for equivalent work commonly starts around $200–$600 with the vehicle required at their service drive — which from Hood County means a drive to Fort Worth, Weatherford, or Cleburne, and a tow if the vehicle will not start. Mobile pricing here typically runs 40–60% below dealer. The full comparison has the details.

What the Vehicle Is Actually Checking

Whichever hardware you hold, the underlying job is the same. Mopar's anti-theft is generally referred to as the Sentry Key Immobilizer System, and it verifies a credential before allowing the engine to run. Fail that check and the engine cranks and refuses to fire with a security indicator lit. It reads like a mechanical fault and is not one.

On newer proximity vehicles, the receiver doing the listening is the Radio Frequency Hub — the module that holds the list of fobs the vehicle accepts. That is worth knowing for one reason: when a Mopar "loses its keys," the hub has simply run out of credentials it trusts, which is a data problem, not a hardware failure. A locksmith writes a new credential into it. Replacing modules is a different and much larger job, covered on our immobilizer programming page.

The FOBIK's Two Specific Quirks

FOBIK-equipped vehicles have two behaviours that send people to a locksmith unnecessarily.

The fob still has to physically fit the slot. Unlike a proximity fob, a FOBIK is inserted and rotated, which means it takes mechanical wear like a key does. A FOBIK that has to be jiggled, or that only works pushed in at a certain depth, is often reporting a worn ignition assembly rather than a failing fob. Buying a second FOBIK will feel like a fix for a few weeks.

A dead FOBIK battery does not always stop the vehicle. On many builds, inserting the fob into the slot places it close enough to the antenna for the immobilizer handshake to complete even with a flat coin cell — you lose the remote lock and unlock buttons but the vehicle still starts. So "my buttons stopped working" and "my vehicle will not start" are usually two separate problems on these, and the first one is a few dollars.

For push-button Durangos and Chargers, the equivalent quirk is the backup start position: hold the fob against the marked spot and the vehicle starts even with a dead coin cell. If that works, the vehicle is healthy and the fob's battery is not.

Why All Keys Lost Costs More

With one working key of any type present, the vehicle already trusts a credential. Adding another is a duplication — cut or pair, verify, done, and the vehicle never stops being drivable. Twenty to forty-five minutes.

With nothing working, there is no trusted credential to build from. The security system has to be reached directly and a first key written into it. Manufacturers make that deliberately slower and gated, because it is precisely what a thief would need to do. On many builds the security data required comes through the National Automotive Service Task Force Vehicle Security Professional program, a credentialed channel that exists so licensed locksmiths can perform this work and unlicensed people cannot.

The extra money buys the procedure, not the plastic. And the procedure is the reason your Durango is still in your driveway.

What Happens on Site

A van comes to the vehicle anywhere in Granbury or the 25-mile radius — house, gate, shop lot, church parking lot, or the side of a county road.

Ownership gets verified first: registration, title, or insurance in your name plus a matching photo ID. That is required under the Texas Department of Public Safety Private Security Program, and on an all-keys-lost job it is the entire legal basis for the work.

Then the credential is paired to the vehicle. On proximity and FOBIK vehicles the emergency blade is cut to your VIN's code at the same time, which is worth doing even though it does not start anything — it gets you into the doors the day a coin cell dies far from home. You start the vehicle yourself before anyone leaves.

Have two keys made while the van is there. The trip, the diagnosis, and the security access all happen once; the second key costs a fraction of a separate visit.

Rule Out the Free Causes First

Two impostors account for a surprising share of "my key stopped working" calls, and both cost nothing to check.

A weak 12-volt battery. Enough charge to light the dash and turn the starter is not necessarily enough to complete the immobilizer handshake. Symptom: cranks, will not start, security light. Charger and Durango owners who drive seasonally hit this often.

A worn ignition assembly on bladed or FOBIK vehicles. If the key or fob feels loose, gritty, or position-sensitive, the assembly is worn rather than the key. The all-vehicle ignition guide explains how to tell, and ignition repair in Granbury covers the fix.

A technician who sells a key without asking about either has not diagnosed anything. The red flags worth recognising are short and worth two minutes.

The Spare Is the Whole Argument

The pattern in Hood County is consistent enough to be boring. A vehicle runs on one key for years, everybody knows it, nobody spends the money — then the key goes into the lake at a ramp, down a storm drain on the square, or into a washing machine, and a scheduled appointment becomes a recovery.

The spare version of this job costs roughly half of the replacement version and never involves a stranded vehicle. Three habits handle it: keep two keys that have each actually started the engine, store them in different places, and make sure one person knows how many exist. That is the whole system.

Our spare car key guide makes the case in full, and what to do if you lost your car key covers the other side of it.

The Honest Boundary

The newest Mopar builds get a VIN check first, because key-access rules move by model year and finding that out in your driveway helps nobody. And if the RF hub or immobilizer module has failed rather than lost its key list, that is a larger job quoted separately.

Anyone quoting any Dodge, any year, without asking which start system it has is guessing with your money — and on this particular lineup, that guess is wrong about half the time.

Frequently Asked Questions

What is a FOBIK, and does my Durango have one? A FOBIK is a rectangular fob that inserts into a dash slot and twists like a key, used widely on Mopar vehicles from roughly 2008 through the mid-2010s. If you push your fob into a slot and turn it, that is a FOBIK; if you press a START button with the fob in your pocket, it is a proximity system.

How much is a Dodge Durango or Charger key in Granbury? As of August 2026, a spare FOBIK generally runs $120–$250, a spare proximity fob $150–$350, and a bladed transponder key $80–$185. All keys lost runs $185–$325 on FOBIK vehicles and $200–$500 on push-button vehicles, quoted by VIN before dispatch.

My FOBIK buttons stopped working but the vehicle still starts. Is it dying? Usually that is just the coin cell. Inserting the fob into the slot places it close enough to the antenna to authenticate even with a flat battery, so you lose the remote buttons before you lose the ability to start. Replace the battery first.

Can a locksmith program these, or is it dealer-only? A locksmith can on the large majority of them, with security data access through the NASTF Vehicle Security Professional program. Mobile service also avoids towing a non-running vehicle out of the county.

How long does the appointment take? Twenty to forty-five minutes for a spare on a drivable vehicle, and 45 to 90 minutes for all keys lost, plus drive time.

My key has to be jiggled to work. New key or new ignition? Often the ignition assembly rather than the key, especially on higher-mileage bladed and FOBIK vehicles. A new key will mask it briefly and the symptom returns. Have it looked at before buying hardware.

What do I need to have ready? Proof of ownership in your name, a matching photo ID, the VIN, the model year, and whether the vehicle is bladed, FOBIK, or push-button.

Get It Identified and Keyed

Call or text (817) 214-2934 with the VIN, model year, and how you start the vehicle. Serving Granbury, Acton, DeCordova, Pecan Plantation, Tolar, Lipan, Cresson, Nemo, Bluff Dale, Glen Rose, and 25 miles out. Weekdays 8:00 AM to 7:00 PM, Saturdays 8:00 AM to 5:00 PM, with 24/7 emergency availability. You can also request service through our contact page or see Dodge key replacement in Granbury and key fob replacement.