3 Best Scan Tool for Programming Keys

If you’ve ever been locked out of your car or needed to replace a lost key, you know how expensive a trip to the dealership can be. A scan tool that can program keys puts that power back in your hands, saving you time and money.

This guide reviews three top scan tools that can handle key programming and more. Whether you’re a DIYer or a home mechanic, you’ll find the right tool to match your skill level and budget.

Autel Scanner MaxiIM KM100 (X) – Advanced Key Programming

The Autel Scanner MaxiIM KM100 (X) is a dedicated key programming tool that also functions as a full OBD2 diagnostic scanner. It runs on Android 9.0 with a Rockchip PX30 processor, 2GB RAM, and 64GB storage, giving you smooth performance for complex tasks. The 5.5-inch 1280×720 display and 8MP camera make it easy to navigate menus and capture VINs. However, note that this tool does not work with many popular brands like BMW, Toyota, Ford, or Nissan, so you must check compatibility before purchasing.

For key programming, the KM100 (X) supports over 700 vehicle models and includes lifetime free software updates, so you always have the latest features. The multilingual interface and DTC definitions help you diagnose issues and program keys without confusion. While its vehicle coverage is limited compared to some competitors, it’s a powerful choice if your car is on the supported list. The wireless Bluetooth connectivity adds convenience, letting you move around the vehicle freely during programming.

View all product features

• 📌【Check Before Purchase】This Autel OBD2 scanner CAN’T work for Benz, for BMW, for Toyota, for Lexus, for GM, for Chrysler, for Ford and for Nissan. Please DO provide the 17 digits VIN to 💌 autelusa @ outlook . com to check compatibility before purchase! For FCA vehicles after 2018, need 12+8 Cable or FCA Aut0.auth Subscription.
• 【Advanced Hardware Configuration】Autel scan tool comes with user-friendly Android 9.0 OS, Rockchip PX30 Processor, 5.5-inch 1280×720 resolution, 2GB RAM &64GB ROM, 8MP Camera, 4950mAh battery, Bluetooth 5.0 Communication, WIFI Update, USB 2.0 type C Charging interface.
• 【Lifetime F.ree Updates】Autel automotive diagnostic tool enjoys lifetime f-ree software updates, you don't need to pay extra to get the newest software, you can always download latest vehicle software for fr-ee in all lifetime.
• 【Multilingual Menu and DTC definitions】Interface supports multiple languages (e.g., English, Spanish, French) and shows definitions of diagnostic trouble codes on the screen. Send SN to change language for f.ree.
• 【Internet Updateable】The unit supports firmware/software updates via PC/Internet, enabling support for newer vehicles over time.
• 【Wide Compatibility】Works with OBD2 protocols: KWP2000, ISO9141, J1850 VPW, J1850 PWM and CAN. Check compatibility before purchase.
• 【Easy Data Sharing & Printing】Autel escáner automotriz is easier diagnostic your cars than other brand tools. It supports data quick sharing, you can quick share your diagnostic reports via Q.R-code, which is a very fast and convenient way for sharing diagnostic results and time-saving.
• 【Plug & Play】This OBD2 car code reader is “plug and play” and comes with an easy interface. Even if you’re not familiar with vehicle repair, you can quickly take control of this obd2 scanner, and get the information you want.

---

THINKCAR THINKSCAN 689BT – Bidirectional Key Programming

The THINKCAR THINKSCAN 689BT is a bidirectional scan tool that goes beyond basic diagnostics to include ECU coding and key programming. It supports CANFD and DoIP protocols, making it compatible with many modern vehicles. With over 3000 active tests and 34 service functions, it’s a comprehensive tool for home mechanics. The wireless updates come with no subscription fees, saving you up to $400 per year compared to other brands.

Key programming is handled through the FCA Autoauth feature, which simplifies the process for Fiat Chrysler vehicles. The bidirectional control lets you test components like locks and windows, which is useful during key programming. Keep in mind that some units may be customer returns sold by Amazon, so check the device upon arrival. Overall, the THINKSCAN 689BT offers great value for those who want a versatile tool without ongoing costs.

View all product features

• [Notice] When you receive a used escaner automotriz device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way, and we’ll provide a solution within 24 hours. THINKSCAN 689BT Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
• [Good News] THINKSCAN 689BT is the most competitive automotive scan tool to date, offering wireless updates with no subscription fees(valued 500Buc.ks) . With all the features of THINKTOOL PD8,PRO, built on Android 10 platform with 4-core CPU, 4GB RAM and 64GB ROM, serving up to 5X faster than older MAX/MINI/PLUS vehicle scanners escaner automotriz, no more slow and delayed feedbacks, it's time to update your garage tool.
• [Big Money Saver] Premium THINKSCAN 689BT Wireless Diagnostic Scanner Escaner Automotriz, save up to 400USD per year, includes all useful features: Full bi-directional controls, ECU coding, 34+ services, OEM all system diagnostics, Worldwide vehicles coverage, CAN FD & DoIP, FCA AutoAuth（The 689BT only provides a login and purchase portal, and users are required to register for an FCA account and pay a membership fee in order to perform the relevant automotive diagnostics)
• [3000+ Active Tests]Active testing is one of the most useful features in automotive maintenance and greatly improves mechanic efficiency. THINKCAR 689BT bidirectional scanner can send action commends to vehicle sub-systems or components for active test without using vehicle controls. It can perform various tests such as: EVAP Test, Fuel Trim Reset, Injector Buzz Test, Window/ Mirror/ Door Lock Test, Pump and Value Tests, etc. Get functions from "Diagnose>Car Model>System>Active Test".
• [Hot Advanced Features] 689BT bidirectional tool scanner for car newly adds ECU Coding, Power Balance, Flash Hidden Functions, Reset Adaptive Data, Match Replaced Components, Customize OE-Settings. Such as: 1. changing the color of interior lights 2. switching on/off the auto hold, 3. customizing dash kits 4. activating the auto side mirror folding function 5. disables auto start-stop. Note: Coding functions vary by model&year.
• [34 Services for 140+ Makes and Growing]One of the most important features in a business scanner para autos, every item yields benefits. In 2024, 689BT car scanner diagnostic tool added 6 new services including Clutch, ECU, FRM, Gate, Rlsensor, and Turbo Reset. The popular Oil Reset, EPB, BMS, SAS Calibration, ABS Bleeding, Injector Coding, Gearbox Match, Suspension, Crankshaft Relearn etc, still growing. Check compatibility before purchase.
• [OE Level All Systems Diagnostic] THINKSCAN 689BT obd2 scanner diagnostic tool is an universal automotive diagnostic scanner which can access to all available car systems such as Engine, Trans, Brake, TPMS, Battery, SRS etc. to read and clear codes. In addition, it displays real-time data (sensors, valves, RPM, etc.) in text, graphical and analog formats and saves them as reports with the customer.
• [Wireless Update & Back-up] THINKSCAN 689BT is a comprehensive scanner automotriz, supports 28 languages, 140 worldwide car brands , like passenger cars, 12v pickup, hybrid vehicles and suvs. AutoAuth for 2018+ FCA cars . CAN FD & DoIP protocols boost 2X faster communication. Packaging configuration gateway accessories, saving you 60 bucks. It is an fantastic choice for DIYers, repair store.

---

Autel Code Reader Diagnostic Tool – Budget Key Programming

The Autel Code Reader Diagnostic Tool is an entry-level OBD2 scanner that works on most 1996 and newer vehicles with OBD II or CAN protocols. It retrieves generic and manufacturer-specific codes, freeze frame data, and live data, helping you diagnose check engine lights. While it’s not a dedicated key programming tool, it can clear codes and reset the check engine light after repairs, which is often part of the key programming process.

This scanner runs on Android 9.0 with 2GB RAM and 64GB storage, and includes lifetime free updates. Its wireless Bluetooth connection makes it easy to use with your smartphone or tablet. For basic key programming tasks like clearing codes after a new key is programmed, this tool is a budget-friendly option. However, it lacks advanced programming features found in higher-end models, so it’s best for DIYers who need a simple diagnostic companion.

View all product features

• Wide vehicle compatibility – Works on most 1996 and newer OBD II and CAN-protocol vehicles (domestic and import).
• Retrieves generic, manufacturer-specific & pending codes
• Freeze frame data & live
• This car code reader is used to turns off Check Engine Light (MIL), clears codes
• Multilingual menu and DTC definitions.- Interface supports multiple languages (e.g., English, Spanish, French) and shows definitions of diagnostic trouble codes on the screen.

---

Buyer’s Guide: What to Consider

Choosing the right scan tool for programming keys depends on your vehicle, budget, and skill level. Here are five key factors to consider before making a purchase.

• Vehicle Compatibility: Ensure the scan tool supports your car's make and model. Some tools, like the Autel KM100, have limited brand support, so check the 17-digit VIN before buying.
• Key Programming Features: Look for tools with dedicated key programming functions, such as FCA Autoauth or ECU coding. Basic code readers may only clear codes, not program new keys.
• Software Updates: Lifetime free updates save you money over time. Tools like the Autel and THINKCAR models offer this, while others may charge subscription fees.
• Bidirectional Control: Bidirectional testing lets you activate components like locks and windows, which is useful during key programming. The THINKSCAN 689BT excels in this area.
• Ease of Use: Consider the interface and display. Android-based tools with touchscreens and multilingual menus, like the Autel KM100, are user-friendly for home mechanics.

Conclusion

When it comes to programming keys, the right scan tool can save you a trip to the dealer. The Autel KM100 (X) is best for supported vehicles with advanced hardware, while the THINKSCAN 689BT offers bidirectional control and no subscription fees. For basic diagnostics, the Autel Code Reader is a budget-friendly option.

Consider your vehicle’s compatibility and your need for advanced features. If you’re a DIYer, the THINKSCAN 689BT provides the best balance of functionality and value. Always check the product details to ensure it meets your specific requirements.