iCarsoft US V4.0 OBD2 Diagnostic Scanner ECU Coding Bi-Directional Control

iCarsoft US V4.0 OBD2 Diagnostic Scanner ECU Coding Bi-Directional Control

The iCarsoft US V4.0 is a professional automotive diagnostic scanner designed for American vehicle brands, including Ford, Chrysler, Jeep, Dodge, GM and Holden. It provides full-system diagnostics, bidirectional control, and ECU coding for supported Ford, Chrysler, Jeep and Dodge models. Featuring a 5-inch Android touchscreen, 41 service functions, CAN-FD support, AutoVIN identification and 32GB storage, this diagnostic tablet helps users read and clear fault codes, monitor live data and perform supported maintenance and advanced diagnostic procedures.

DEALER-LEVEL US CARS DIAGNOSTICS. TRUSTED WORLDWIDE.

The iCarsoft US V4.0 delivers comprehensive diagnostics across all major onboard ECUs—including the engine, transmission, ABS, and SRS/Airbag. Built strictly for serious DIYers and independent repair shops, this powerhouse goes far beyond basic code reading to provide OE-level ECU coding, advanced adaptations, and full bidirectional control.

• Advanced Bi-Directional Control
• 41 Service Functions
• CAN-FD Supported
• Lifetime Free Updates
• 5″ Android Touchscreen
• Ford & Chrysler ECU Coding

Dealer-Level Diagnostics

Detroit muscle meets dealer-grade software — in a 5-inch tablet you actually own.

The US V4.0 is the touchscreen evolution of iCarsoft’s American-vehicle specialist line: a 5-inch Android tablet pairing full-system diagnostics with advanced bidirectional control, Ford and Chrysler/Jeep/Dodge ECU coding, 41 service functions, CAN-FD, AutoVIN, 15 languages and lifetime free Wi-Fi updates — no subscription, ever. Six American makes, one purpose-built tool.

01 Exclusively for US Vehicles

Born for American iron — six makes, zero compromise.

Purpose-built coverage for the American brands you actually work on — for Chrysler, for Dodge, for Jeep, for Ford (US Ford, EU Ford, AU Ford), for G.M., for Holden. Pick a group below, or scan the full make list out of the box.

• 8 All Makes: American brands
• 3 Stellantis: for Chrysler, for Dodge, for Jeep
• 3 Ford: for Ford (US), for Ford (EU), for Ford (AU)
• 2 GM: for G.M., for Holden

Don’t see your car? Send us your VIN and our team will review compatibility against the current coverage information.

02 Powerful Hardware

Five inches of HD, an Android brain, and a battery that lasts the shift.

• 5″: HD touchscreen
• Quad: 1.3GHz quad-core
• 32GB: On-board storage
• 5000 mAh: battery
• 6 hrs: Continuous use
• Android: Operating system

iCarsoft US V4.0 car diagnostic tool is equipped with a 5-inch HD Touch Screen, Android operating system, Quad Core 1.3 GHz processor, 32GB storage and a 5000mAh battery for around 6 hours of continuous use. It offers a user-friendly interface and an ultra-smooth diagnostic experience.

03 Lifetime Free Software Upgrades

Pay once. Upgrade forever.

Unlike other OBD scan tools on the market that require annual subscription fees, the US V4.0 offers lifetime free software upgrades. Updates are delivered wirelessly via Wi-Fi, with new diagnostic protocols and vehicle model coverage continuously released.

• No subscription fees, ever
• No renewals, no unlocks, no paywalls
• Wireless Wi-Fi delivery: Updates arrive over the air, no PC, no cables
• New protocols & model coverage: Continuously released as cars evolve

04 Supports the Latest CAN-FD Protocol

Fluent in the high-speed bus of 2020-and-newer American cars.

CAN-FD (Controller Area Network – Flexible Data-rate) is the next-generation in-vehicle communication protocol used by many newer cars. The US V4.0 supports CAN-FD on 2020-and-newer GM and Chrysler models.

• CAN-FD: Controller Area Network – Flexible Data-rate. A faster, higher-bandwidth successor to classic CAN.
• GM & Chrysler (2020+): Supported on 2020-and-newer GM and Chrysler models. Keeps the US V4.0 talking to your newest American models.
• Future-Proof: Lifetime updates keep adding new protocols and models. Ready for your current car and your next one.

05 Advanced Bi-Directional Control

Stop guessing — command the part and watch it answer.

The US V4.0 goes beyond reading codes. With full bidirectional control, you can command individual components and watch them respond in real time — cycle the ABS pump motor, run window regulators, activate the fuel pump, open the throttle, and run output tests on almost every onboard module. Pinpoint the faulty part in minutes, without trial-and-error.

• Cycle the ABS Pump Motor: Command the ABS pump and watch it respond in real time.
• Run Window Regulators: Activate window regulators and output tests on almost every module.
• Activate the Fuel Pump: Trigger the fuel pump on demand to confirm a fault in minutes.
• Control the Throttle: Open the throttle and run output tests — no trial-and-error.
• Cycle the EGR Valve: Drive the valve open and closed to clear carbon causing a rough idle.
• Command the Fuel Injectors: Cut or drive individual injectors in real time to isolate misfires.
• Trigger the Cooling Fans: Switch high and low fan speeds on demand to verify relays and motors.
• Sequence Transmission Solenoids: Cycle shift solenoids one by one to pinpoint slippage and harsh shifts.

⚠ Compatibility Notice: And More · 22+ active tests across every onboard system — and growing with each update.

• Cycle the ABS Pump Motor
• Run Window Regulators
• Activate the Fuel Pump
• Control the Throttle

06 Advanced ECU Coding: Unlock Your Vehicle's Full Potential

Code it like the dealer — Ford, Jeep, Dodge & Chrysler.

Maximize your workshop’s capabilities with our professional-grade ECU Coding feature. Seamlessly bridge the gap between component replacement, software troubleshooting, and personalized driving experiences across Ford, Chrysler, Jeep, and Dodge car groups.

• For Ford (2003 – 2023): Hidden Function Activation & Personalization — Programming ➚ Programmable Parameters
• For Chrysler / Jeep / Dodge (Specific Years): Alert Logic & Basic Vehicle Settings — Service ➚ Coding

ECU Coding for Ford

Easily modify core vehicle configurations when upgrading hardware or tailoring localized factory body settings.

• Mechanical & Hardware Calibrations: Tire Size Adjustment: Re-calibrate the speedometer after installing aftermarket tire sizes to maintain accuracy. Axle Ratio Configuration: Modify the axle speed ratio to sync with your truck’s modified drivetrain. Fuel & Storage Upgrades: Update system profiles when upgrading to a custom/expanded fuel tank or water tank size.
• Driving Aids & Security Setup: Braking System Profiles: Toggle Hill Start Assist (HSA) and main braking system configurations ON/OFF. Safety Alerts: Enable or disable lane departure warning/keep chimes and door-ajar warning indicators. Panic Horn Logic: Customize the behavior of the safety horn alert system.
• Onboard Personalization & Lighting: Warning Chimes Control: Toggle backup warning chimes and overspeed indicators ON/OFF. Smart Lighting Logic: Adjust interior courtesy light dimming profiles, and customize headlamp delay duration (triggered by door opening or ignition off). Remote Start Comfort: Configure climate control behavior linking and the under-hood safety switch for remote starts. Cabin Displays: Configure digital speedometer layouts, switch between metric/imperial measurement units, and toggle the external subwoofer output.

ECU Coding for Chrysler / Jeep / Dodge

Access specialized BCM (Body Control Module) profiles to customize convenience features and security feedback.

• Verified Model & Year Coverage: CHRYSLER: 300 (2014) | 200 (2015 - 2017) JEEP: Grand Cherokee (2014) | Cherokee (2014 - 2017) | Compass (2017 Global Variants: M1-Brazil / MP-Mexico / M4-China / M6-India) DODGE & RAM: Journey (2014 - 2019) | Durango (2014) | Charger (2014) | Dart (2012 - 2016) | Viper (2014 - 2019) | RAM Heavy Duty Trucks (2014: 2500 / 3500 Pickup / 3500 Cab Chassis / 4500 / 5500 / RAM Mexico)
• FOBIK System Safety: Enable or disable the FOBIK (FOB Integrated Key) authentication system fail-safe warning alerts to troubleshoot starting glitches.
• Visual & Audio Feedback: Toggle optical flash alerts (hazard light flashes upon locking) and acoustic sound chirps (audible horn sound feedback) ON/OFF when arming the vehicle.
• Cluster Warning Text: Control and toggle the display of specific vehicle health warning texts or status notifications on the instrument cluster dashboard.
• Hazard Flashers Control: Fine-tune and modify the triggering and activation logic of hazard warning light sequences.

⚠ ECU Coding is currently available for part of the Ford, Chrysler, Jeep, and Dodge. Coding support for additional brands is being rolled out through ongoing software updates.

07 Fast AutoVIN Identification

Plug in — your car names itself in seconds.

Skip the manual VIN typing — simply plug in, and the tool identifies your vehicle in seconds. No typos, no extra lookup time. This boosts accuracy, eliminates input errors, and makes every scan faster and more reliable.

• Auto Vin
• Vehicle Identify
• Manual Select

08 Supports 15 Languages

Diagnose in the language you think in.

The universal OBD scanner US V4.0 supports English, German, French, Dutch, Spanish, Czech, Swedish, Russian, Hungarian, Norwegian, Portuguese, Italian, Polish, Danish, and Finnish.

• EN: English
• DE: Deutsch
• FR: Français
• NL: Nederlands
• ES: Español
• CS: Čeština
• SV: Svenska
• RU: Русский
• HU: Magyar
• NO: Norsk
• PT: Português
• IT: Italiano
• PL: Polski
• DA: Dansk
• FI: Suomi

09 41 Comprehensive Service Functions

Nine everyday resets and 32 pro routines — ready the moment a job hits the bench.

The US V4.0 is far more than a basic code reader. It integrates 9 commonly-used service functions for daily maintenance and 32 advanced professional functions for complex repair tasks.

Search all 41 service functions — e.g. Oil Reset, DPF, BMS…

9 Hot Service Functions — Daily maintenance

▸ 9 Hot Service Functions covering your daily maintenance needs.

• Oil Reset: Allows you to reset the engine oil life system, service lamp, service mileage, and service intervals after an oil change.
• Electronic Throttle Control: Relearns throttle valve control parameters after resetting or replacing the throttle body.
• EPB-Brake-Pad Reset (EPB): Retracts the electric parking brake calipers and resets the brake pads after replacement.
• Steering Angle Reset (SAS): Calibrates the steering wheel to the straight-ahead position, or recalibrates the SAS after steering component replacement.
• DPF Regeneration: Performs DPF regeneration, component replacement initialization, and DPF relearning after engine control unit replacement — for diesel particulate filter systems.
• Injector Coding: Relearns the injector control parameters when an injector is renewed or replaced.
• ABS Bleeding: Bleeds air from the system to restore ABS brake response, or performs a relearn procedure after ABS replacement.
• Air Suspension Service: Supports calibration, height adjustment, system reset, and fault code clearing for air suspension systems. Lets you precisely set ride height, perform system initialization, and resolve common air suspension faults.
• Battery Management Service (BMS): Evaluates the battery charge state, monitors closed-circuit current, registers battery replacement, and activates the vehicle’s sleep mode.

32 High-Level Functions — Professional technicians

▸ 32 High level service functions for professional technicians:

• TPMS Reset: Allows you to look up the tire sensor IDs from the vehicle’s ECU, inputting TPMS sensor replacement IDs and testing sensors.
• Air Conditioner Service: Supports routine maintenance of A/C modules, including A/C system adaptation reset, compressor reset, compressor break-in, and stepper motor initialization.
• Head Lamp Service: Initializes the adaptive headlamp system.
• Body Stability Control Service: Supports routine maintenance of DSC modules, including resetting or deleting adaptation values, and initializing the unit.
• Engine Control Service: Supports routine maintenance of engine modules, including resetting or deleting adaptation values, and calculating fuel consumption.
• Transmission Control Service: Supports routine maintenance of transmission modules, including resetting adaptation values and transmission fluid level adaptation.
• Air-Bag Reset: Resets airbag data to clear the airbag (SRS) warning light after a collision.
• Seat Service: Calibration after repairing or replacing the seat position drive motor.
• Immobilizer Service: Anti-theft Matching, disable any lost keys and add new keys. ONLY for vehicles with basic Immobilizer system.
• Engine Idle Service: Adjusts the engine idle speed.
• Door-Window-Roof: Learns the top position of the door window glass, enabling pinch protection and the one-touch-up function.
• Fuel Pump Service: Activates the fuel pump after replacement.
• Air Filter Control Service: Initiates the self-learning process after replacing the air filter.
• ODO Meter Reset: Reads odometer values stored in multiple ECUs (for service and verification purposes).
• Door Service: Performs full calibration after window lift motor repair or replacement.
• Turbocharger: Performs turbocharger learning after component replacement, or resets stored learned values.
• Exhaust Gas Recirculation: Recirculates a portion of engine exhaust gas back into the intake system.
• AdBlue: Resets the AdBlue (urea) level counter after the diesel exhaust fluid is refilled or replaced.
• Clutch Matching: Learns the clutch contact point and engagement position where the clutch begins to transmit engine torque. Applicable after ECU replacement, transmission removal/replacement, or clutch replacement. For adaptive clutches only.
• Crankshaft Learning: Performs crankshaft position learning and related calibration after engine repair.
• High Voltage Battery: Supports EV/hybrid high-voltage battery maintenance, including replacement adaptation and status monitoring.
• Language Setting: Changes the vehicle’s system language.
• Radar/Camera: Performs radar and camera learning and calibration (ADAS).
• Vehicle Setup: Personalize your vehicle’s driving and comfort preferences.
• Control Unit Reset: Performs full reset and initialization of vehicle control units after part replacement or fault repair, clearing stored data and restoring normal module operation.
• O2S (Oxygen Sensor): Supports oxygen sensor replacement adaptation and initializes the three-way catalytic converter learned values.
• Seat Belt: Performs seatbelt pretensioner reset and related maintenance after airbag deployment.
• Gas Particulate Filter: Performs service operations including GPF replacement and regeneration.
• NOx Sensor: Resets NOx sensor-related learned values (e.g., catalytic converter parameters) stored in the ECU.
• Stop And Start: Set up the automatic start-stop function in ECU.
• Mileage Verification: Checks and compares odometer data stored across multiple ECUs to detect mileage tampering.
• VIN Verification: Reads and matches the VIN across all vehicle ECUs to detect inconsistencies or unauthorized module replacement.

• DPF Regeneration
• Oil Reset
• EPB-Brake-Pad Reset (EPB)
• Steering Angle Reset (SAS)
• Battery Management Service (BMS)

Additional service functions are available in the Miscellaneous section.

⚠ Compatibility Notice: The specific diagnostic service functions vary by vehicle brand, model, production year, and ECU configuration.

10 Powerful Full-Systems Diagnostics

Every module the dealer sees — engine to airbag.

In addition to the four standard systems (Engine, ABS, Airbags, and Transmission), the US V4.0 provides diagnostic coverage for more complex vehicle systems.

• Read and Clear DTCs: Pull and clear diagnostic trouble codes across every available module.
• Read ECU Information: Read control-unit part numbers, software versions and status.
• Read Live Data: Stream live sensor readings in clear on-screen lists.
• Access all ECU modules via OBDII-16 DLC: Reach every onboard module through the standard 16-pin port.
• Read and Clear Freeze Frame Data: Capture the snapshot stored at the moment a fault was set.

• Read Fault Codes
• Live Data
• Full System Scan

11 Full OBD2 Test Modes — Emission-Ready

Ten OBD2 modes, one clean emissions check.

Supports all 10 OBD2 test modes for vehicles compliant with 1996+ OBDII/EOBD/JOBD/KOBD/CAN/CAN-FD standards: Read Codes, Erase Codes, I/M Readiness, Live Data, Freeze Frame, Vehicle Information, O2 Monitor Test, On-Board Monitor Test, EVAP System Test, and Pending Codes.

• 01: Read Codes
• 02: Erase Codes
• 03: I/M Readiness
• 04: Live Data
• 05: Freeze Frame
• 06: Vehicle Information
• 07: O2 Monitor Test
• 08: On-Board Monitor Test
• 09: EVAP System Test
• 10: Pending Codes

12 Support Diagnostic History and Report printing

Save it, share it, print it — a clean record every time.

Users can quickly access previously tested vehicle systems and save, share, and print diagnostic reports.

• Diagnostic History & Reports: Quickly revisit previously tested vehicle systems and keep a saved record on the device.
• Feedback & PC Printing: Use the Feedback function to report issues encountered during use — our technical team will review and provide assistance. Diagnostic data can also be printed for future reference by connecting the device to a Windows PC via USB.

13 Product Specifications

The complete technical rundown.

• Operating System: Android
• Processor: Quad Core 1.3 GHz
• Storage: 32GB
• Display: 5-inch LCD capacitive touchscreen with 854x410 resolution
• Connectivity: USB 2.0 / Wi-Fi (2.4GHz) / OBDII
• Power: 9-18V
• Operating Current: ≤500mA
• Battery Capacity: 3.7V 5000mAh 18.5Wh
• Tested Battery Life: Around 6 hours of continuous use
• Type C Input: 5V / 2A
• Power Consumption: 500mA (LCD on with default brightness, Wi-Fi on) @3.7 V
• Operating Temp.: 0 to 50°C (32 to 122°F)
• Storage Temp.: -20 to 70°C (-4 to 158°F)
• Operating Humidity: 5% - 95% non-condensing
• Dimensions (W x H x D): 200 × 116 × 30.2 mm (7.87 × 4.57 × 1.19 in)
• Net Weight: ≈ 380 g
• Supported Automotive Protocols: ISO 9141-2, ISO 14230-2, ISO 15765, K/L-Line, Flashing Code, SAE-J1850 VPW, SAE-J1850 PWM, ISO 11898 (High-speed, Medium-speed, Low-speed, and Single-wire CAN), CAN-FD, SAE J2610, GM UART, UART Echo Byte Protocol, Honda Diag-H Protocol, TP2.0, TP1.6

14 Packing List

Open the case — everything you need to start.

• Main Unit (x1): Main Unit (Diagnostic Tablet)
• Protection (x1): Carry Case
• Cable (x1): OBD2 Main Cable (16-pin)
• Cable (x1): USB-C Cable
• Document (x1): Multi-Language User Manual

ℹ️ Note: Use the charger you already own — no extra e-waste. The US V4.0 can be charged using any standard USB-C charger (5V/2A recommended) or a computer’s USB port.

Frequently Asked

Good to know before you buy.

• Is the software updated regularly? Are updates free?: Yes! The iCarsoft US V4.0 includes lifetime free software upgrades via Wi-Fi. There are zero annual subscription fees or hidden costs. You pay once and get continuous software updates forever.
• The US V4.0 cannot recognize my vehicle by AutoVIN, does it mean the device is faulty?: Not at all. AutoVIN depends on individual vehicle ECU protocols. If AutoVIN skips your car, simply use the Manual Selection mode—all diagnostic and service functions will work perfectly. Meanwhile, please send your VIN to our support team; we will verify it and add it to our database in the next software update.
• DTCs can be read normally but fail to be cleared or reappear after clearance, why?: Please keep ignition on and engine off. Record freeze frame data first before clearing codes. Persistent hardware faults need physical repair prior to code clearance. Some fault codes of systems like SRS and ABS can only be cleared after finishing bidirectional tests.
• The scanner powers on but fails to establish a diagnostic connection. What causes this issue?: Please check the following steps to troubleshoot:
  • Check Vehicle Compatibility: Ensure your vehicle is covered by the US V4.0, please kindly refer to the vehicle coverage of US V4.0.
  • Turn Off Power-Saving: Disable any eco/battery-saving modes on the vehicle that might shut down modules during diagnosis.
  • Update Device: Connect to Wi-Fi and update both the firmware and vehicle software to the latest versions.
  • Check Ignition: Ensure the vehicle key is turned to the “ON” position.
• What’s the difference between US V4.0 and the older US V3.0?: The US V4.0 is the upgraded successor to the US V3.0. It transforms the traditional button-operated scanner into a smart 5″ Android touchscreen device, adding convenient one-click Wi-Fi updates and advanced ECU coding—all without needing a PC.

Choose the iCarsoft US V4.0 for versatile vehicle diagnostics, advanced active tests and convenient wireless software updates with lifetime free upgrades and no annual subscription fees. Its 5,000mAh battery supports approximately six hours of continuous use, while diagnostic history and report-printing features help keep service records accessible. ECU coding, CAN-FD support and service functions vary by vehicle make, model, year and system configuration. Please confirm compatibility with your specific vehicle before purchasing.