Obd2 Scanner with Crankshaft Relearn Reviews: 4 Best Options

Dealing with a check engine light or a rough idle after a repair? You might need a crankshaft position sensor relearn. This procedure is essential after replacing the sensor or performing certain engine work, and not every scanner can do it.

This guide reviews four OBD2 scanners that include crankshaft relearn capability. You’ll find options for DIYers and professionals, from basic resets to advanced bidirectional controls. Each review focuses on specific features to help you choose the right tool for your garage or workshop.

XTOOL D5S OBD2 Scanner – 16 Resets for DIYers

The XTOOL D5S is a practical choice if you need a straightforward scanner with multiple reset functions. It offers 16 commonly needed resets, including crankshaft relearn, throttle relearn, and EPB service. This tool covers four main systems—Engine, ABS, SRS, and Transmission—so you can diagnose and clear codes across critical areas. The real-time engine monitoring feature helps you track live data like RPM and coolant temperature, which is useful for verifying repairs.

For home mechanics, the D5S provides a balance of functionality and ease of use. It includes CAN FD and FCA AutoAuth support, ensuring compatibility with newer vehicles. The portable design makes it easy to store in your glovebox. While it lacks bidirectional control, the 16 resets cover most routine maintenance tasks, making it a solid entry-level option for crankshaft relearn and other services.

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• Comprehensive OBD2 Scanner with 16 Resets: The XTOOL D5S car code reader and vehicle reset tool provides an advanced diagnostic solution with 16 commonly needed reset functions, including Electronic Parking Brake Reset (EPB Reset), SAS, BMS Reset (Battery Test), Throttle Body Relearn, TPMS Reset, ABS Bleeding, Injector Coding, Gearbox Match, Suspension Adjustment, Headlight, Window Initialization, Crank Sensor Relearn and more. Equipped with CAN FD Protocol and FAC AutoAuth, the D5S obd2 scanner diagnostic tool ensures compatibility with a broad range of modern vehicles, allowing users to address common maintenance needs quickly. NOTE: Please Check the Compatibility before ordering.
• 4 Main System Car Scanner & Full OBD2 Diagnostics: The XTOOL D5S car code reader is ideal for home mechanics, DIYers, and professionals, providing access to Transmission/Engine/ABS/SRS systems to read DTCs, Live data can be displayed in text or up to 4 PID data graphs, along with full OBD2 diagnostics to check the engine light on, other obd2 issues and routine maintenance. This car diagnostic scanner ensures you can keep your vehicles in top condition, avoiding costly repairs or unexpected breakdowns. NOTE: Some vehicles display three systems after connection because the transmission and engine of some vehicles are integrated into one.
• Check Engine Code Reader & Real-Time Engine Monitoring: Whether you're a car owner, a DIYer, or run a repair shop, the XTOOL D5S obd2 scanner diagnostic tool makes engine diagnostics fast and frustration-free, reading and explaining trouble codes in seconds—no confusion. Check live data like fuel trim, 02 sensor voltage, RPM, and coolant temp to pinpoint mis~fires, rough idle, or sensor issues. After repairs, simply use the D5S check engine code reader and reset tool to turn off the check engine light and confirm the problem’s fixed—saving time, money, and unnecessary shop visits. – Note: If the check engine light comes back on, it indicates the original problem still exists.
• Portable Car Scanner for ABS and SRS: XTOOL D5S gives you peace of mind when ABS or airbag warning lights come on. It reads and clears ABS codes to help you fix brake sensor, traction control, or wheel speed issues, and supports ABS bleeding after repairs like caliper or master cylinder replacement. For airbag systems, it scans and clears SRS codes related to airbags, seatbelt tensioners, and crash sensors. Whether you're doing repairs at home or running a small shop, the D5S is a cost-effective solution for safety diagnostics. Note: If a fault code returns after clearing, it usually means the issue hasn’t been fully resolved. Please check the compatibility before ordering.
• Transmission Warning Light ON? Here’s the Transmission Diagnostic and Reset Tool You Need: The XTOOL D5S is more than just a basic car scanner—it’s an easy-to-use transmission diagnostic tool. From rough shifts to slipping gears, the D5S lets you read and clear transmission trouble codes, monitor real-time TCM data, and perform transmission resets after fluid changes or repairs. Whether you’re a hands-on car owner or a pro running a busy shop, this OBD2 scanner with transmission functions helps you catch problems early—saving you time, money, and future headaches.. Note: Clearing fault codes is equivalent to a reset on some vehicles, but not all. For help, contact XTOOL Tech Support.
• Wide Compatibility Across 90+ Vehicle Brands: The XTOOL D5S scanner works with cars and 12V trucks, covering OBDII-equipped vehicles built after 1996. It covers over 90 vehicle brands, including models with 12V diesel engines, as well as SUVs, minivans, and light-duty trucks. It supports most of protocols include CAN FD for broad compatibility. Please note that this device does not support Indian domestic vehicle brands. For vehicle-specific compatibility, send us your vehicle information to check the compatibility before purchase.
• One-Tap WiFi Updates & No Subscription Fees: Enjoy a 5.45” high-resolution touchscreen (1440×720) that’s easy to read, even in low light. Free lifetime software updates over WiFi keep your D5S OBD2 scanner diagnostic tool updated with the latest features—no hidden fees. Ample 32GB storage plus expandable memory ensures room for all your diagnostic data, while durable silicone grips provide comfortable, secure handling. This makes D5S a cost-effective, long-term investment for continuous diagnostic support, a dependable car diagnostic scanner for your family.
• Super Clear Navigation Display: The XTOOL D5S car scanner enhances your diagnostic workflow with a super clear navigation display, designed for convenience and speed. Top capabilities include a Voltage Display for real-time monitoring of your vehicle’s electrical system, a “My Vehicle” menu for adding and managing vehicle information, and quick-access buttons Interfaces for both Auto Scan and OBD2 Diagnostics, ensuring you can quickly access the menu you need. These features streamline the diagnostic process, allowing you to focus on what matters most—efficient vehicle maintenance.
• Additional Functions with AutoVIN and DTC Lookup: AutoVIN/Auto Scan technology allows the D5S obd2 scanner to automatically identify your vehicle for a quick diagnostic. You can save and share diagnostic reports, while the built-in DTC library helps you quickly understand the fault codes. NOTE: AutoVIN may not work on all vehicles.
• A Trusted Brand with Ongoing Support: : As a leader in special functions development, XTOOL stands by its products with a 2-year warranty and long-term technical support. This D5S car code reader offers free updates, giving users continued access to the features. Our dedicated support team is ready to help with any issues, we are committed to resolving all concerns swiftly.

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XTOOL D7S Bidirectional Scan Tool – Professional Diagnostics

The XTOOL D7S is a professional-grade bidirectional scan tool that goes beyond basic code reading. With over 4000 active tests, you can command components like actuators and solenoids directly, helping you pinpoint issues before replacing parts. It performs OE-level diagnostics for all systems, including Engine, Transmission, ABS, SRS, BCM, and TPMS. The 39+ reset functions cover crankshaft relearn, throttle relearn, and more, making it a comprehensive tool for advanced repairs.

This scanner supports CAN FD, DoIP, and FCA AutoAuth, ensuring broad coverage for modern vehicles. The bidirectional control is a standout feature, allowing you to test systems like windows and locks without a separate tool. For professionals or serious DIYers, the D7S saves time and money by reducing guesswork. The large touchscreen and intuitive interface make navigation straightforward, even during complex diagnostics.

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• [SAVE THOUSANDS WITH A PROFESSIONAL BIDIRECTIONAL SCAN TOOL—OE-LEVEL DIAGNOSTICS WITHOUT DEALERSHIP COSTS] XTOOL D7S bidirectional scan tool is a professional OBD2 car scanner built for advanced DIYers, professional mechanics, repair shops, fleet maintenance, and used-car inspections. Perform OE-level full system diagnostics, run over 4,000 active tests, complete ECU Coding (for BMW/Benz), and carry out advanced maintenance including Crankshaft Relearn, Injector Coding, ABS Bleeding, EPB Reset, Oil Reset, SAS Reset, BMS Reset, TPMS Reset, and more. Save thousands in repair costs by diagnosing and servicing vehicles yourself instead of relying on expensive dealerships
• [4000+ ACTIVE TESTS & TRUE BIDIRECTIONAL CONTROL—DIAGNOSE PROBLEMS BEFORE REPLACING PARTS] Unlike a basic code reader, XTOOL D7S bidirectional OBD2 scanner sends commands directly to vehicle modules to verify whether components are functioning properly. Test fuel injectors, cooling fans, fuel pumps, windows, mirrors, door locks, A/C clutch, engine srs transmission abs systems, ABS pumps, wipers, relays, and many other actuators before replacing expensive parts. This bidirectional scan tool helps technicians and DIY users identify faults faster, reduce unnecessary repairs, and improve diagnostic accuracy
• [FULL SYSTEM DIAGNOSTICS + 39+ RESETS INCLUDING CRANKSHAFT RELEARN] XTOOL D7S diagnostic scan tool performs OE-level diagnostics for Engine, Transmission, ABS, SRS, BCM, TPMS, Steering, Battery, and all available vehicle systems across more than 10,000+ models worldwide. Includes over 39 maintenance services, such as Crankshaft Position Relearn, Throttle Body Relearn, Oil Reset, EPB Service, ABS Bleeding, Injector Coding, BMS Reset, SAS Calibration, DPF Regeneration, Transmission Adaptation, and many more. NOTE: Available functions vary by vehicle make, model, year, and ECU configuration
• [SUPPORTS CAN FD, DOIP & FCA AUTOAUTH—BROADER COVERAGE FOR MODERN VEHICLES] Designed for today's vehicles, XTOOL D7S OBD2 scanner supports CAN FD for newer GM vehicles, DoIP for BMW, for Jaguar, for Land Rover and Volvo, plus FCA AutoAuth for Chrysler, for Dodge, for Jeep, for RAM, for Fiat, and Alfa Romeo. With frequent software updates, this professional automotive scanner continues expanding vehicle coverage as new models are released. If you're unsure whether your vehicle supports a specific function or a newly released model, simply send us your VIN before purchasing for a free compatibility check
• [AI-ASSISTED DIAGNOSTICS, 8-IN-1 LIVE DATA & AUTOVIN—DIAGNOSE FASTER WITH MORE CONFIDENCE] XTOOL D7S car scanner diagnostic tool combines AI-assisted diagnostics, AutoVIN, Auto Scan, and 8-in-1 live data graphing to make troubleshooting faster and easier. View multiple sensor values simultaneously, record and replay live data, compare fuel trims, transmission performance, battery voltage, oxygen sensors, and other critical parameters, then export reports in CSV format for deeper analysis or to share with customers and repair shops. Whether diagnosing intermittent faults or warning lights, this diagnostic scanner helps you make informed repair
• [BUILT TO KEEP IMPROVING—FREQUENT SOFTWARE UPDATES & EXPERT TECHNICAL SUPPORT] XTOOL D7S scan tool includes 3 years of free software updates, adding new vehicle coverage, new service functions, and ongoing performance improvements. Our engineering team regularly releases updates for supported vehicles and features, while our experienced technical support team is available to assist with setup, software installation, compatibility questions, and troubleshooting. Backed by responsive customer service and a comprehensive warranty, the D7S is designed to provide long-term value for both professionals and DIY users
• [IMPORTANT BEFORE YOU BUY—FREE VIN CHECK TO ENSURE VEHICLE COMPATIBILITY] No professional OBD2 scanner supports every function on every vehicle. Advanced features such as ECU Coding, Active Tests, Crankshaft Relearn and Reset Services depend on the vehicle's make, model, year and manufacturer limitations. Some security or immobilizer procedures may require additional OEM adapters or specialized accessories. We recommend updating the scanner before first use to ensure the latest vehicle coverage. Simply send us your VIN or MMY before ordering, and our support team will verify compatibility to help you choose the right XTOOL diagnostic scanner and avoid unnecessary returns

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KINGBOLEN K7 Bidirectional Scan Tool – No Annual Fees

The KINGBOLEN K7 stands out with lifetime updates and no annual fees, a major advantage if you want to avoid subscription costs. This 2026 upgraded scanner includes CAN FD support and FCA AutoAuth, ensuring compatibility with newer car models. It offers bidirectional control and active tests, allowing you to perform component matching and ECU coding. With 31+ reset functions, including crankshaft relearn, it covers essential maintenance tasks without extra charges.

The K7 provides OE-level full system diagnostics, scanning ECUs like PCM, ECM, EPS, BCM, TPMS, and SAS. The Auto VIN feature simplifies vehicle identification, saving time during setup. Bluetooth connectivity enables wireless diagnosis, giving you freedom to move around the vehicle. For cost-conscious users who want professional features, the K7 delivers strong value. The interface is user-friendly, with clear menus and live data graphing for monitoring sensor readings.

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• No Annual Fees & 2026 Upgraded CAN FD: Why pay $199/year or more for updates? The 2026 newest Kingbolen K7 obd2 scanner features have been upgraded to Lifetime Updates without subscription fees, saving you significant costs in the long run. K7 scan tool also adds the CAN FD protocol for the latest GM models (2019+), enabling faster data transfer, reducing the risk of undetected errors
• 2026 Newest Top-tier Car Scanner: Kingbolen K7 diagnostic scan tool is equipped with most capabilities for daily repair/maintenance: Wireless diagnosis via Bluetooth, Bidirectional Test, ECU Online/Offline Code, 31+ Resets, PMI for Ford, Lincoln, Mazda, Global version for 100+ brand vehicles and 17 languages, no area limit, FCA AutoAuth
• OE-Level Full Systems Scan Tool: K7 professional diagnostic scanner with Auto Vin can do one-click to scan ECUs on most of vehicles, like pcm, ecm, eps, bcm, tpms, sas, a/c system… to read/clear code, view live data, freeze frame, read ecu info. 4-in-1 data stream graphics can make data viewing more intuitive. Detailed diagnostic reports will help you easily master the car situation as it can be shared by bluetooth or email! Adding workshop information can help your customers to know more
• Bidirectional Test/Active Test & ECU Code: Stop guessing and start fixing. Bidirectional scan tool Kingbolen K7 can perform real active test that can send commands to the vehicle's ECU to drive the actuators to work, like window, rear mirrors, sunroof, door, solenoids, wipers, headlamp, etc, helping you quickly find out bad parts and pinpoint faulty issues. K7 bidirectional scanner will be a good choice to save money and time on car repairs when performing complex maintenance and repair
• 31 Reset Functions: Avoid expensive dealership visits for simple services. Experience tells us that just a small repair service may cost a lot of money. Kingbolen K7 is a professional diagnostic scanner with 31 common maintenance services like Oil /SAS/EPB/TPMS Reset, Battery Matching, ABS Bleeding, Injector Code, etc. It effectively handles most of the car reset and relearning jobs, perfect for experienced DIYers and mechanics. Note: Functions in the menu vary across vehicles. Kindly check the compatibility before purchase
• 10000+ Car Coverage & Fca Autoauth+No IP Limit: As a comprehensive diagnostic tool, k7 scan tool helps you to troubleshoot the problems fast for 100 + US, European, Asian vehicle brands. Frequent updates allows K7 support more vehicles to meet your needs. Supporting Autoauth allows you to unlock the protected FCA vehicle SGW module on Chrysler, Dodge, Jeep, Alfa Romeo, Fiat vehicles, etc. Note:＞＞＞ Only provide AutoAuth login portal, and need purchase the registration number on the AutoAuth website by yourself. When conducting FCA login, please look at this step: Add Tool→Pick the Type of Tool→Thinkcar→Thinktool Others. For More Tips on Fca Autoauth, please refer to the A+ page text
• Wireless VCI & Powerful Hardware: Ditch the short cables. The Bluetooth OBD2 scanner VCI gives you the freedom to diagnose outside the driver's seat. Powered by Android 10.0, a 1.8GHz Quad-Core CPU, 2GB+32GB memory, and a 6000mAh battery that lasts all day, this 7-inch tablet delivers intuitive 4-in-1 live data graphing without lag. Built-in Browser and Fault Code Library allows you can directly query the fault code when diagnosing. Perfect choice for advance DIY, auto repair shop, home mechanic and Dealership
• Usage Tips:1. After plugging the K7 bluetooth connector into the vehicle, please remember to turn on the vehicle's Ignition Switch to ensure that the device can communicate with the vehicle. 2. Turn on your K7's Bluetooth to ensure that your k7 tablet can operate the functions. 3. Your k7 tablet needs to be connected to the network to diagnose the vehicle. 4. K7 car scanner can not support all vehicles and can’t do all mentioned functions on one car. Vehicle and feature compatibility depends on the year and specific model of the car. Please send car VIN via Amazon's "Messages" to check compatibility before purchasing

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XTOOL D7S (2026) AI-Assisted Scanner – Advanced Features

The 2026 upgraded XTOOL D7S V2.0 adds AI-assisted diagnostics to the already capable D7 platform. This scanner includes FCA AutoAuth, CAN FD, and DoIP support for broad vehicle coverage. It offers 39+ reset functions, including crankshaft relearn, and provides OE-level all-system diagnostics. The AI assistance helps interpret trouble codes and suggests possible fixes, which is helpful if you’re less experienced with complex diagnostics.

ECU coding is available for specific brands, allowing you to customize vehicle modules. The 8 PIDs graphing feature lets you monitor up to eight data parameters simultaneously, aiding in performance tuning or fault analysis. The bidirectional control remains intact, enabling active tests on components. For workshops or advanced DIYers, this tool combines traditional diagnostics with smart features. The large display and responsive touchscreen make it easy to navigate through menus and data logs.

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• Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCA Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU coding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations
• 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCA AutoAuth: Now supports FCA SGW module for Chrysler, for Jeep, for Dodge (2018+), for Fiat (2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Programming): Allows for Ford, for Lincoln, and for Mazda ECU programming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order
• Cost-effective ECU Coding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMW, for Benz and offline for BENZ, for MIT, along with PMI functions for Ford, for Mazda, and for Lincoln. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase
• OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently
• 3 Years Software Update, Value for Money: With 3 years of software updates and 22+ languages(no IP restrictions), XTOOL D7S auto scanner code scanner ensures ongoing compatibility for the latest car models and improved diagnostic functions. This all system vehicle diagnostic scanner comes with a 30-day return policy and a 24-month repair for dependable performance. XTOOL are dedicated to your satisfaction, so enjoy seamless support and lifetime expert assistance. Should you encounter any issues or concerns, don’t hesitate to reach out XTOOL. D7S with newest update with 22 languages freely transfer without authorization, check details from setting-language or from XTOOL
• XTOOL D7S – Upgrade of D7 for Faster & Smarter Diagnostics: In terms of hardware, XTOOL D7S obd2 scanner bidirectional features 1G+64GB storage (vs. 1G+32GB on D7) for faster processing, a rear camera, intuitive UI, and a foldable bracket for more convenience. On software, it newly supports FCA, online ECU coding for BMW and PMI, greatly boosting its diagnostic efficiency and versatility. With all system scan, 39+ resets, 4k+ active tests, 10,000+ models coverage, CAN FD/DoIP, 22+ languages, no IP restrictions, 3 years fr.ee updates ($300 value), it's a budget-friendly, professional-grade solution for mechanics and DIYers seeking $500-level diagnostic tools at a lower cost

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Buyer’s Guide: What to Consider

When choosing an OBD2 scanner with crankshaft relearn, focus on key features that match your skill level and vehicle needs. Here are five factors to consider.

• Crankshaft Relearn Support: Ensure the scanner explicitly includes crankshaft position sensor relearn. Not all code readers offer this, so verify compatibility with your vehicle make and model.
• Reset Functions Count: More resets cover tasks like throttle, EPB, and SAS. Choose a tool with at least 16 resets for routine maintenance, or 30+ for comprehensive service.
• Bidirectional Control: Bidirectional scanners let you command components like actuators and solenoids. This helps diagnose issues without replacing parts, saving time and money.
• Vehicle Coverage: Look for CAN FD, DoIP, and FCA AutoAuth support for modern vehicles. These protocols ensure compatibility with newer cars and trucks.
• Update Costs: Some scanners require annual subscription fees for updates. Tools with lifetime updates avoid recurring costs, offering better long-term value.

Conclusion

Choosing the right OBD2 scanner with crankshaft relearn depends on your budget and diagnostic needs. The XTOOL D5S is great for basic resets, while the XTOOL D7S and KINGBOLEN K7 offer professional bidirectional control. The 2026 D7S adds AI assistance for advanced users.

For most DIYers, the XTOOL D5S provides a solid balance of features and price. If you need active tests and no update fees, the KINGBOLEN K7 is a strong contender. Professionals will appreciate the D7S models for their depth of diagnostics.