will these keys and fobs work on a 2007 ford mustang?

They worked in my 2006 mustang. There are 2 procedures you need to do once key(s) are cut. One for fobs and one for the keys. Both are simple and available on youtube. This assumes you have one current key and fob. I only had one original set and it only took a few minutes to do both procedures to give me 3 sets.

Can a key be produced from original cut in half

Most likely, take it to Walmart. They are the cheapest place that I know of who cuts the key and programs it. I'll warn you the key fob is garbage. I program it and it won't shut off the alarm. You have to open the car door and put the key into the ignition.

lost original have a spare but only opens the door, does not start the vehicle ... can you help?

I had one original key when bought the used car, theses were spare keys and fob. With all the keys I still had to go to the locksmith and had it reprogramed, change code with new, old. My only suggestion will be you have to pay a locksmith, no quick fix, no YouTube video as well, however, you can try.

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Car Key Fob Keyless Entry Remote fits Ford, Lincoln, Mercury, Mazda with Ignition Key (CWTWB1U331 GQ43VT11T CWTWB1U345 4-btn), Set of 2

Product ID: 86806735

Details

Brand
USARemote
Color
2-Pack
Item Weight
1 ounces
Material
Plastic
Vehicle Service Type
Car

🔋Complete electronic assembly with battery

🔑Fits Ford, Lincoln, Mercury, Mazda (4-btn)

🛠️User-programmable with step-by-step guide

$41.01

Duties & taxes included

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔑 Unlock convenience and savings—your car’s new best friend!

COST SAVING KEY SET - Set of 2 key fobs and ignition keys at a fraction of dealership prices
DIY PROGRAMMING POWER - Program your keys yourself with clear instructions—no locksmith needed if you have 2 original keys
DURABLE RELIABLE BUILD - Long-lasting plastic construction designed to withstand daily use and wear
UNLOCK FREEDOM INSTANTLY - 4-button remote controls lock, unlock, trunk, and panic functions with up to 50ft range
UNIVERSAL FIT FOR POPULAR BRANDS - Seamlessly compatible with Ford, Lincoln, Mercury, and Mazda models for versatile use

This set of 2 keyless entry remotes with ignition keys fits Ford, Lincoln, Mercury, and Mazda vehicles, featuring 4-button control and complete electronic assembly with battery. Designed for easy user programming with provided instructions, it offers a durable, cost-effective alternative to dealership replacements, empowering you to regain full remote access and ignition control without breaking the bank.

Specifications

ASIN	B06XWGQBFM
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#50,834 in Automotive ( See Top 100 in Automotive ) #272 in Keyless Entry Systems #17,304 in Automotive Replacement Parts
Brand Name	USARemote
Button Quantity	4
Color	2-Pack
Compatible with Vehicle Type	Car
Customer Reviews	4.3 4.3 out of 5 stars (2,135)
Item Weight	1 ounces
Manufacturer	USARemote
Manufacturer Part Number	f-345-4btn 80bit
Material Type	Plastic
Model Number	8542135986
Number of Items	2
UPC	688946482892

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$41.01

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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