iCarsoft MB V4.0
The MB V4.0 covers every Mercedes system — from engine and transmission to airbag, ABS, and ECU adaptations — with full bidirectional control, 41 service functions, and lifetime free software updates. Compatible with Mercedes-Benz, Sprinter, Smart, and Maybach (1996–2025).
Unbox it for Mercedes — then claim two more brands, free.
The iCarsoft MB V4.0 comes pre-installed with software for Mercedes-Benz, Sprinter, Smart and Maybach, making it ready to use right out of the box. 2 additional vehicle groups can be downloaded free of charge whenever you need them.
Pre-installed
Free Downloads
Downloaded free of charge, whenever you need them — no extra cost, ever.
Total Coverage
Pay once and cover the brands you actually service — far beyond Mercedes.
Vehicle Groups Available for Selection
PICK ANY 2 · FREE OF CHARGEA 5-inch Android tablet built to run all day in the bay.
iCarsoft MB V4.0 car diagnostic tool is equipped with a 5-inch Ultra HD Touch Screen, Android operating system, Quad Core 1.3 GHz processor, 32GB memory and a 5000mAh battery for around 6 hours of continuous use. It offers a user-friendly interface and an ultra-smooth diagnostic experience.
Pay once. Upgrade forever — no subscription, ever.
Unlike other OBD scan tools on the market that require annual subscription fees, the MB V4.0 offers lifetime free software upgrades. Updates are delivered wirelessly via Wi-Fi, with new diagnostic protocols and vehicle model coverage continuously released.
UPDATE PLANReady for the Mercedes platforms built from 2020 onward.
CAN-FD (Controller Area Network – Flexible Data-rate) is a next-generation automotive communication protocol adopted by Mercedes-Benz starting from 2020.
What is CAN-FD?
CAN-FD (Controller Area Network – Flexible Data-rate) is the next-generation evolution of the classic CAN bus, now adopted across the newest Mercedes-Benz platforms.
- Flexible Data-Rate: Transfers larger data frames at faster speeds than classic CAN, keeping up with modern vehicle electronics.
- The New Factory Standard: Adopted by Mercedes-Benz on the latest platforms.
CAN-FD Ready, Out of the Box
- Native CAN-FD Support: Talks the CAN-FD protocol directly from the standard OBD2 port.
- Newest Models Covered: Keeps the MB V4.0 connected to the latest Mercedes-Benz chassis in its coverage range.
One Tool, Every Protocol
CAN-FD is only the newest layer — the MB V4.0 speaks the full range of protocols used across decades of Mercedes-Benz models.
- Beyond CAN-FD: Also supports classic CAN, K/L-Line and the other factory protocols listed in the full specifications below.
- Old or New, One Tool: From early CAN models to today's CAN-FD platforms, the MB V4.0 selects the right protocol for the car.
This is what bidirectional control really means.
The iCarsoft MB V4.0 bidirectional scan tool supports active component testing and full bidirectional control for most vehicle modules. It sends custom commands and retrieves real-time data to execute targeted functions, including window, mirror, and door lock testing, as well as throttle adjustment — allowing you to pinpoint faults quickly.
Body & Comfort Active Tests
You can directly command individual components and watch them respond in real time — identify the faulty part in minutes, without relying on trial-and-error.
- Command Window Regulators: Drive windows up and down straight from the scanner to isolate bad switch clusters in seconds.
- Trigger Door Locks & Side Mirrors: Actuate locks and mirrors on demand to pinpoint body control module glitches.
Powertrain & Fuel Active Tests
Send commands straight to the engine-side modules and watch each component respond in real time — no cabin switches, no waiting for the fault to reappear.
- Kick On the Fuel Pump: Activate the fuel pump instantly to verify fuel pressure dropping issues.
- Modulate Throttle Opening: Sweep the throttle to check for sticking carbon deposits.
Chassis & Brake Active Tests
Take direct control of the hydraulic hardware that normally only responds while driving — essential for a proper brake service.
- Cycle the ABS Pump Motor: Run the pump on command to purge trapped air during brake bleeding.
Dynamic Output Tests
Beyond the headline tests, the MB V4.0 can exercise nearly every electrically driven component on the car.
- Any Actuator or Solenoid: Run dynamic output tests on virtually any onboard actuator or solenoid in minutes.
- Confirm Before You Buy: Watch the module respond live and confirm the failed part before ordering a replacement.
Plug in. Your Mercedes 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 delivers a smoother, more reliable diagnostic experience.
One-Plug Identification
- Automatic VIN Read: Simply plug into the OBD2 port and the MB V4.0 identifies your vehicle in seconds.
- No Extra Lookup Time: Skip manual VIN typing and model-menu digging entirely — go straight to diagnostics.
Accuracy Built In
- Eliminates Input Errors: No typos means the scanner always loads the exact software profile for your vehicle.
- Smoother, More Reliable Sessions: Correct identification from the first second delivers a more reliable diagnostic experience.
Manual Selection Backup
AutoVIN depends on individual vehicle ECU protocols. If AutoVIN skips your car, it doesn't mean the device is faulty — you always have a second way in.
- Manual Selection Mode: Pick your model from the menu and every diagnostic and service function works exactly the same.
- Growing VIN Database: Send your VIN to the support team and it will be verified and added in the next software update.
Diagnose in your language, wherever you wrench.
Far more than a basic code reader.
The MB 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.
Allows you to reset the engine oil life system, service lamp, service mileage, and service intervals after an oil change.
Relearns throttle valve control parameters after resetting or replacing the throttle body.
Retracts the electric parking brake calipers and resets the brake pads after replacement.
Calibrates the steering wheel to the straight-ahead position, or recalibrates the SAS after steering component replacement.
Performs DPF regeneration, component replacement initialization, and DPF relearning after engine control unit replacement — for diesel particulate filter systems.
Relearns the injector control parameters when an injector is renewed or replaced.
Bleeds air from the system to restore ABS brake response, or performs a relearn procedure after ABS replacement.
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.
Evaluates the battery charge state, monitors closed-circuit current, registers battery replacement, and activates the vehicle's sleep mode.
Allows you to look up the tire sensor IDs from the vehicle's ECU, inputting TPMS sensor replacement IDs and testing sensors.
Supports routine maintenance of A/C modules, including A/C system adaptation reset, compressor reset, compressor break-in, and stepper motor initialization.
Initializes the adaptive headlamp system.
Supports routine maintenance of DSC modules, including resetting or deleting adaptation values, and initializing the unit.
Supports routine maintenance of engine modules, including resetting or deleting adaptation values, and calculating fuel consumption.
Supports routine maintenance of transmission modules, including resetting adaptation values and transmission fluid level adaptation.
Performs calibration after repairing or replacing the seat position drive motor.
Learns the top position of the door window glass, enabling pinch protection and the one-touch-up function.
Activates the fuel pump after replacement.
Initiates the self-learning process after replacing the air filter.
Adjusts the engine idle speed.
Anti-theft Matching, disable any lost keys and add new keys. ONLY for vehicles with basic Immobilizer system.
Performs full calibration after window lift motor repair or replacement.
Recirculates a portion of engine exhaust gas back into the intake system.
Resets the AdBlue (urea) level counter after the diesel exhaust fluid is refilled or replaced.
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.
Activates the electronic water pump for testing or after replacement.
Performs crankshaft position learning and related calibration after engine repair.
Performs adaptive cruise control (ACC) calibration and personalization
Changes the vehicle's system language.
Resets NOx sensor-related learned values (e.g., catalytic converter parameters) stored in the ECU.
Calibrates the rain sensor after windshield replacement or sensor renewal
Configures the automatic start-stop function in the ECU.
Performs turbocharger learning after component replacement, or resets stored learned values.
Performs radar and camera learning and calibration (ADAS).
Tests each engine cylinder individually by disabling its fuel supply — useful for diagnosing cylinder-specific issues such as misfires or low compression.
Sets or removes the vehicle's maximum speed limit.
Performs full reset and initialization of vehicle control units after part replacement or fault repair, clearing stored data and restoring normal module operation.
Supports oxygen sensor replacement adaptation and initializes the three-way catalytic converter learned values.
Performs seatbelt pretensioner reset and related maintenance after airbag deployment.
Checks and compares odometer data stored across multiple ECUs to detect mileage tampering.
Reads and matches the VIN across all vehicle ECUs to detect inconsistencies or unauthorized module replacement.
Additional service functions are available in the Miscellaneous section.
Reach every ECU — not just the four standard systems.
In addition to the four standard systems (Engine, ABS, Airbags, and Transmission), the MB V4.0 provides diagnostic coverage for more complex vehicle systems.
Codes & Freeze Frame
- Read and Clear DTCs: Pull diagnostic trouble codes from every supported system and clear them once the repair is done.
- Read and Clear Freeze Frame Data: Review the exact sensor snapshot captured at the moment a fault occurred, then clear it after servicing.
Live Data & ECU Info
- Read Live Data: Watch real-time sensor values and parameter streams while the vehicle is running.
- Read ECU Information: View each control module's identification details for accurate servicing and part matching.
All-Module Access
Full-system coverage means the MB V4.0 doesn't stop at the powertrain — it reaches the complex body, chassis and driver-assistance modules too.
- Access All ECU Modules via OBDII-16 DLC: Reach every module on the vehicle through the standard 16-pin diagnostic connector.
- Beyond the Big Four: Diagnostic coverage extends past Engine, ABS, Airbags and Transmission into more complex vehicle systems.
Dealer-grade adaptations, right in your hands.
Every emission check, all ten modes, ready to pass.
Supports all 10 standard OBD2 test modes on any 1996+ OBDII / EOBD / JOBD / KOBD / CAN / CAN-FD compliant vehicle.
Classic Mercedes and early Sprinters? Still covered.
The smart auto diagnostic tool MB V4.0 also supports Mercedes-Benz models (with the 38-pin adapter) and early Sprinter vans (with the 14-pin adapter). The corresponding iCarsoft adapters are available separately.
38-pin Adapter
Compatible with pre-2003 Mercedes-Benz passenger vehicles: C-Class W202 (up to 2000), E-Class W210 (up to 2002), S-Class W140 (up to 1998), CLK-Class W208 (up to 2003), SLK-Class R170, SL-Class R129 (up to 2002) and other similar models.
Shop Adapter →14-pin Sprinter Adapter
For Sprinter T1N & early NCV3 vans. 1995-2006 Sprinter models.
Shop Adapter →Not sure which one you need? Check by VIN →
Save it, share it, print it — every job on record.
Every diagnostic session is logged and kept on hand. Pull up any previously tested vehicle system, then save, share or print the full report — so every job stays on record long after the car leaves the bay.
Diagnostic History
Instantly revisit previously tested vehicle systems and earlier scan results.
Save & Share
Store full reports and share them with customers or colleagues in seconds.
Print Reports
Connect to a Windows PC over USB and print diagnostic data for future reference.
Feedback Function
Report issues during use — our technical team reviews them and steps in to help.
Every detail, on the record.
| Operating System | Android |
| Processor | Quad Core 1.3 GHz |
| Memory | 32GB |
| Display | 5-inch LCD capacitive touchscreen with 854x480 resolution |
| Connectivity | USB 2.0 / Wi-Fi (2.4GHz) / OBDII |
| Power | 9-18V |
| Operating Current | ≤500mA |
| Battery Capacity | 3.7V 5000mAh 7.4Wh |
| 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 |
Everything you need, right in the box.
Note: USB-C wall charger not included. The MB V4.0 can be charged using any standard USB-C charger (5V/2A recommended) or a computer's USB port.
See how far V4.0 pulls ahead of V1.0, V2.0 and V3.0.
Same trusted Mercedes coverage across the line — V4.0 adds the touchscreen, Wi-Fi updates, full bidirectional control and the complete 32 high-level service functions.
| Feature | MB V1.0 | MB V2.0 | MB V3.0 | MB V4.0 |
|---|---|---|---|---|
| Coverage | Mercedes-Benz Sprinter Smart Maybach | Mercedes-Benz Sprinter Smart Maybach | Mercedes-Benz Sprinter Smart Maybach | Mercedes-Benz Sprinter Smart Maybach +2 additional vehicle make groups free of charge |
| Display Size | 3.5 inches | 4 inches | 4 inches | 5 inches |
| Interaction | Physical Buttons | Physical Buttons | Physical Buttons | Touchscreen |
| System Access | Full systems | Full systems | Full systems | Full systems |
| Update Method | USB | USB | USB | Wi-Fi |
| Free Lifetime Updates | ✔ | ✔ | ✔ | ✔ |
| Bi-directional / Active Test | ✘ | ✘ | ✔ | ✔ |
| Oil Service Reset | ✔ | ✔ | ✔ | ✔ |
| SAS Reset | ✔ | ✔ | ✔ | ✔ |
| EPB/Brake-Pad Reset | ✘ | ✔ | ✔ | ✔ |
| Electronic Throttle Control | ✘ | ✔ | ✔ | ✔ |
| DPF Regeneration | ✘ | ✔ | ✔ | ✔ |
| Injector Coding | ✘ | ✔ | ✔ | ✔ |
| ABS Bleeding | ✘ | ✔ | ✔ | ✔ |
| BMS Reset | ✘ | ✔ | ✔ | ✔ |
| TPMS Reset | ✘ | ✔ | ✔ | ✔ |
| 32 High Level Service Functions | ✘ | ✘ | ✔ | ✔ |
Check your connection before you order.
Standard 16-Pin OBD2
Built in on every MB V4.0 — plug-and-play on all modern Mercedes-Benz, Sprinter, Smart and Maybach. No adapter needed.
38-Pin Adapter
Pre-2003 Mercedes-Benz with the round 38-pin port: C-Class W202, E-Class W210, S-Class W140, CLK W208, SLK R170, SL R129 and similar.
14-Pin Adapter
For Sprinter T1N and early NCV3 vans built between 1995 and 2006, which use the older 14-pin diagnostic port.
Not sure which port your car has? Check compatibility by VIN or contact our support team. Both adapters are sold separately.
Shop Adapters →Everything you need to know.
Watch it work — reviews from drivers & pros.
Independent YouTube reviews of the MB V4.0 from Mercedes owners, mechanics and channels — see the unit running live diagnostics, bidirectional tests and full-system service functions on real cars before you decide.
These are independent reviews hosted on YouTube — each reflects the creator’s own opinion, not a paid endorsement. Videos load only when you press play, so the page stays fast.
Manual & software updates.
Download the user manual, check the full function & vehicle coverage list, and review warranty & returns before you buy.
Multi-Language User Manual
The complete user manual for the MB V4.0 — setup, full-system diagnostics, service functions and troubleshooting.
Function List & Vehicle Coverage
See exactly which Mercedes-Benz, Sprinter, Smart and Maybach models and functions the MB V4.0 supports, by system.
Warranty & Returns
Backed by the iCarsoft manufacturer warranty. Review the full warranty terms and the returns & refunds policy.
Available through authorized sellers.
The MB V4.0 is sold through authorized iCarsoft sellers worldwide. Contact our team to confirm compatibility for your vehicle, check stock, or find your nearest authorized distributor.
Interested in the MB V4.0?
This page is for product information. Tell us what you need and our team will get back to you shortly — to confirm vehicle compatibility, request a quote, or find your nearest authorized dealer.
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