Request a QuoteFind A DealerBuy Car KeysCut Keys Online

Mercury Key Replacement Houston Texas

- vehicle lock smith Hey. Have you broken or lost the keys to your Mercury? Do you want to duplicate transponder key, fob key or smart-key? Scanning for an affordable and convenience replacement key solutions?


Okey DoKey Locksmith offer 24/7 fast and affordable Mercury replacement key. Call (832)408-0006 for immediate assistance, free estimate and scheduling. Our expert mobile car locksmith come to you to copy or replace your lost keys on-site.

Furthermore, we can solve all your Mercury locks, key and ignition concerns.

Does Mercury use transponder keys?

PATS 1 transponder keys

what is transponder key? The use of Securilock electrical keys started in 1996 for the Mustang and Taurus. The first three years the PATS was an optional article on few models.

Mercury models using PATS 1

  • 1998 Mercury Mystique LS
  • 1996-1997 Mercury Sable (optional)

PATS 1 transponder keys

From year 1996 Mercury use the electric passive anti theft system with an encrypted transponder chips.

Mercury models using PATS 2

  • Mercury Grand Marquis 98+
  • Mercury Mariner 05+
  • Mercury Monterey 04-06
  • Mercury Mountaineer 98+
  • Mercury Mystique 99+
  • Mercury Milan 06+
  • Mercury Cougar 99+
  • Mercury Marauder 03
  • Mercury Sable 98+
  • Mercury Montego 05-07

Why does Mercury use transponder keys?

car anti-theft The PATS (passive anti-theft system) key uses radio frequency technology to identify and deter a car theft. The "passive" in the name means that the system requires no activity from the driver.

How does Mercury transponder and immobilizer work?

Mercury PATS system uses a chip in the head of the key and an immobiliser inside the vehicle. The key programmed with a unique identifying code from a possible 18 billion combinations. When the key turned in the ignition, the ECU sends out a RF signal to the transponder in the key. The key chip then returns a unique RF signal to the ECU. If the immobiliser recognize the code, the vehicle will start.

Can I program a duplicate Mercury key by yourself?

duplicate car keys Duplicate PATS 1 keys may be done using a simple on-board procedure, as long as you have one functional key. For the PATS 2 and E-PATS key you must have two existing keys to make an additional key onboard. If you don't have at least 2 keys, the new keys must be programmed using dedicated diagnostic equipment.

How to duplicate Mercury keys and remotes?

Every new Mercury car provided with two cut and program keys. If owner have both keys (one key with PATS 1), up to 8 backup keys made by an easy dash-board procedure. This method make sure that only the real owner with both original keys can make a backup key.

If you are missing one passive anti theft key, to duplicate a key the ECU requires reprogramming. You have to go to a locksmith or to the dealership to reproduce another key. Basically you better always keep 3 PATS 2 keys around or at least 2 PATS 1 keys.

Mercury key duplication onboard

If you have working keys, to originate an extra key use the steps below:

  1. Online key cutting - Buy a cut key on the net.
  2. Go on Google Map and type 'locksmith store' in the search box to find a local locksmith who can cut and program your key
  3. Follow the steps below to program the key yourself
  4. Insert the 1st working key into the ignition key-hole and turn it to the ON state (Don’t start the engine).
  5. Watch the immobilizer turn on (red light) and goes off, turn the key back OFF and pull it out.
  6. Repeat steps 4 and 5 for the 2nd working key.
  7. Insert the new properly cut PATS key into the ignition and turn it to the ON state and wait for the red immobilizer light to turn off which means that the new key is program.
  8. Repeat steps 3 - 7 for each extra key

How to duplicate Mercury key by VIN?

Using the VIN, the dealer or a locksmith can access the key-code on file. With the key-code they can cut and program a duplicate key. This process is fast and easy and usually used when a current key is worn-out or dent. Generating keys by VIN requires specific programmers and tools as well as a license.

How to clone Mercury key?

Cloning is using cutters and programmers to copy the chip and cuts of a transponder key to a new blank. The advantage over on-board is that you do not need access to the vehicle, and only needs one operating key.

How to program Mercury remotes

If you have power windows and at least one functional key, you can program a remote yourself. Buy your remote online and use the following instruction to program it.

Lost Mercury keys

Lost metal key blade

lost key made If you lost all your keys to a Mercury that made before 1996, your key has no chip. All you need to do is to go to the dealer or to a locksmith store with the VIN and create a new key. This process is quite simple and should cost less than a 100$ in most cases.

One exception to the above is if the ignition changed and is not in sync with the VIN. In the second case a locksmith need to replace the ignition again or to make a new key. This key done by reading the key grooves inside the ignition cylinder. This process is more complex and requires a locksmith with the right machine and experience.

Lost Mercury PATS key

If you Mercury made in 1996 and above, your key might contain a chip (check the table above).

When losing all the keys to an immobilized Mercury, the ECU reprogrammed to accept a new key. This means that the car towed to the dealership or to use the service of a mobile locksmith who will come out to you.

* Note - In a few old models losing all the keys also means that the ECU reflashed and programmed with a set of 2 new keys. This make the recovery from a lost key almost double in price.

How to replace your Mercury keys?
Read on

My Mercury ignition key wont turn! What to do?

ignition repair There are many reasons for ignition problems! Please check our article about ignition repair and replacement.

How much a replacement Mercury key cost?

Service Price
Car Lockout $60-$120
Locked keys in trunk $60-$190
Door lock rekey/repair/change $160-$280
Lost key replacement $120-$200
Duplicate car key $100-$180
Remote/Key FOB $200-$300
Keyless entry device $220-$320
Ignition repair $110-$180
Key extraction $80-$130
Ignition replacement $160-$280
ECU re-flash $225-$285

* Estimates above includes the technician coming out to you the parts and the labor.

Final price depends on:

  • The state of the lock and the computer in the vehicle.
  • The type of equipment that the technician need to use.
  • The type of key that you would like to have.
  • The chip configuration.

The tech will diagnose the vehicle and provide a price for you to approve before doing anything.

Okey DoKey mobile Dodge locksmith 24/7

emergency mobile locksmith Our emergency mobile vehicle lock smith are serviceable 24/7 holidays and weekends rain or shine. Ready to handle all your Mercury keys and ignition dilemmas. We usually arrive at customer location fast.

Our workshop van is utterly supplied with contemporary programming, cutting and diagnostic appliances able to restore keys onsite. A key replacement process for a vehicle in most cases done same day.

We take great pride in rendering a low-cost cost and reliable services. Give us a call at (832)408-0006 for a FREE ESTIMATE and our Mercury expert will arrive to your place ASAP. Okey DoKey Locksmith is always here to meet your needs in a professional way.


  2. wikipedia - Intelligent Access with push-button start
  3. Mercury Forum - Discussion forums for Mercury lovers. Get together to discuss anything related to Mercury automobiles.
  4. edmunds - American online resource for automotive information.

Related articles/services

  1. Car key replacement
  2. Ignition repair
  3. Car lockout

Mercury Key Replacement Houston Texas Okey DoKey Locksmith

Mercury Key Replacement Houston Texas Okey DoKey Locksmith

Didn't find what you where looking for?

Search for locks and keys services on our website.

Coverage Area

Pearland TX
Kingwood Stafford Baytown League City Missouri City Cypress Katy Pasadena Houston Galveston The Woodlands Spring Sugar Land

Zip codes:

77017 77056 77005 77041 77036 77069 77008 77026 77003 77093 77006 77433 77068 77038 77076 77062 77092 77507 77407 77375 77043 77584 77034 77070 77028 77071 77098 77007 77550 77346 77478 77090 77077 77040 77081 77573 77033 77379 77489 77085 77447 77079 77082 77075 77072 77042 77088 77096 77063 77493 77066 77554 77050 77484 77503 77053 77084 77016 77339 77057 77520 77031 77047 77373 77064 77099 77073 77087 77009 77011 77551 77067 77080 77505 77587 77059 77094 77095 77386 77058 77014 77019 77020 77429 77365 77389 77521 77345 77018 77013 77477 77074 77377 77065 77027 77502 77504 77048 77021 77035 77051 77054 77388 77357 77012 77023 77091 77523 77045 77086 77002 77030 77022 77061 77449 77506 77336 77004 77025 77078 77010