Autel MaxiSys Ultra

The Autel MaxiSys Ultra is a large Android tablet that works with the MaxiFlash VCMI, a five-in-one measurement and communication box. It reads and clears codes on all systems, runs active tests, lists a long set of service functions, and adds the things that most mid-range tablets leave out: a four-channel oscilloscope, a multimeter, a waveform generator, a CAN bus check and a J2534 pass-through interface for reprogramming. Autel’s store page and the Amazon listing both say ECU programming is available on specific BMW and Mercedes-Benz models, and Amazon adds that coding covers 50 or more brands. Neither lists ADAS calibration for the base unit.

The short version: the Ultra is a shop tool for a technician who needs diagnosis, coding, pass-through programming and electrical measurement in one case, and who will work on BMW and Mercedes-Benz programming jobs or on many brands with a PC and the maker’s own software. It is a poor buy for a home mechanic. Amazon and Autel agree on the protocol list, the VCMI, the large battery and the one free update year. They disagree on the hardware generation: Amazon and Autel’s store page describe a 12.x inch screen on Android 7.0 with 4 GB of RAM, while Autel’s July 2025 user manual describes a 12.7 inch screen on Android 11 with 8 GB of RAM. Check the exact unit you are buying before you rely on either number.

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A Tablet and a Tool Box in One Case

The Ultra is sold as a kit. Autel’s store page lists the main unit, the MaxiFlash VCMI, a docking station, the V2.0 main cable, a USB 2.0 cable and a 12 volt AC/DC adapter. It adds test leads for the scope and the multimeter, attenuators, back-pinning probes, clips, a quick reference guide, a tool box and a carrying case. Amazon’s detail table is shorter. It lists the Ultra, the five-in-one VCMI, two replacement back-pinning needles, one year of updates, a 12-month warranty and lifetime technical support.

The weight tells you what kind of tool this is. Autel’s manual gives 2.06 kilograms (4.53 pounds) and 366.5 by 280.9 by 34 millimeters for the tablet alone. It is built to sit on a fender cover or a docking station, not to be carried in a jacket pocket. The battery is an 18,000 milliamp-hour lithium-polymer pack on every source we read, and the manual describes charging from the 12 volt adapter or a USB Type-C supply.

The picture below shows the Ultra with the MaxiFlash VCMI during a module programming session on a Mercedes-Benz GLE. In a real job the tablet is on the bench or the fender and the VCMI is in the car’s diagnostic port.

Two Hardware Stories, and Why You Should Check the Unit

Most readers will skip the hardware table, but the Ultra is the one review where the hardware numbers disagree between good sources, so it deserves a section.

• Screen. Amazon’s bullet says 12.9 inch. Autel’s store page, its product page and its manual say 12.7 inch, 2732 by 2048 pixels. Autel’s own listing for the separate Ultra EV is where 12.9 inch appears, so the Amazon figure is probably a mix-up with the EV model.
• Operating system. Amazon and Autel’s store page say Android 7.0. Autel’s manual, version 2.3 dated July 2025, says Android 11.
• Processor and memory. The store page lists a Samsung Exynos octa-core with a 2.3 GHz quad Mongoose and a 1.7 GHz quad A53 cluster, 4 GB of RAM and 256 GB of storage. The manual lists an octa-core at 2.8 GHz, 8 GB of RAM and 256 GB of storage.
• Wireless. The store page says Wi-Fi 802.11 a/b/g/n/ac with 2 by 2 MIMO and Bluetooth v2.1 with EDR. The manual says Wi-Fi 802.11 a/b/g/n/ac/ax and Bluetooth v5.0.
• Front camera. The store page says 5 megapixels. The manual says 16.

The simplest reading is that Autel has shipped more than one hardware revision under the Ultra name and that the manual describes the newer one. Neither Autel nor Amazon says so directly, so we do not claim it. What we can say is that a buyer who needs a particular operating system, memory size or Bluetooth version should ask the seller to confirm the unit in writing, and should register the tablet and read the About screen on arrival.

What Amazon Says vs. What Autel Confirms

We compared the Amazon listing, including its bullets, description and detail table, with Autel’s store page and Autel’s user manual. They agree on the capability set and differ on hardware details, on counts and on a few service claims.

The programming point matters most. Both sources say the same thing: programming is for specific BMW and Mercedes-Benz models, and coding covers many more brands, depending on the vehicle. The Amazon text repeats a warning that services are not universal and asks buyers to send a VIN before ordering. Autel’s store page says the same about ECU programming and coding. The manual says the options that appear on the tablet depend on the test vehicle and that only the available operations are shown.

The ADAS point matters for shops that do windshield and bumper work. Amazon lists no ADAS calibration for this unit. The manual does include an ADAS chapter and an ADAS Settings step that binds a calibration frame by its QR code or serial number and a validation code from the ADAS Calibration Card. In plain terms, the application exists in the software, and using it needs the separate calibration hardware and activation.

The counts point matters least. Amazon says 40 or more resets and 3,000 or more active tests. Autel names 16 groups of reset services and describes active tests by type. These are different kinds of count, and neither decides the purchase.

A third source. The US Environmental Protection Agency’s rule on maintenance instructions for light-duty vehicles, 40 CFR 86.1808-01, says that for 2004 and later vehicles with reprogramming capability manufacturers must comply with SAE J2534 and must make available to aftermarket service providers the manufacturer-specific software and calibrations needed to start pass-through reprogramming. This source is independent of both Amazon and Autel. It explains why a J2534 interface in a tablet kit matters at all: the law is why a shop can run a maker’s programming software through a third-party box. It also explains the limit. The pass-through route depends on the maker’s software and on the maker’s terms, which is separate from Autel’s own coding and reprogramming functions.

How we handle these differences. The feature table at the bottom of this page, the Scanner Finder and our comparisons follow the Amazon listing, because Amazon is where you buy. We name the points above so you can see where Autel says something different or adds detail. If one of them matters to you, read this section before you decide.

Coding, Reprogramming and Pass-Through: Three Different Jobs

The word programming is used loosely in scanner marketing, and the Ultra’s pages use it in several senses. Autel’s manual separates them clearly in its Programming and Coding chapter, and we follow that split.

1. Coding. The manual calls it teach-in, or component adaptation: you reprogram adaptive data for control modules after repairs or replacements. The tablet lists the components on the left and the coding values on the right, you edit the values and tap Send, and it shows a status such as Completed or Successful. This is the job behind a start-stop setting, a headlight adaptation or a replaced module that needs configuring.
2. Reprogramming. The manual describes downloading the latest software from the maker’s server through the internet and writing it into the vehicle’s ECU. The tablet must be on a stable Wi-Fi network, the VCMI must be connected by USB, the tablet battery should be full, and a battery maintainer should be on the car. The manual warns not to quit the application during a module reprogramming because the process may fail and may permanently damage the module.
3. Pass-through. This is the MaxiFlash VCMI acting as a D-PDU, SAE J2534 and RP1210 interface so a PC can run the maker’s own software. Amazon says it can connect with OEM diagnostic tools to diagnose and program most vehicles. It is the route a dealership-style flash takes, and it needs the maker’s software and, usually, the maker’s subscription.

For a shop the practical question is which of the three the job needs. A replaced body control module on a BMW may need reprogramming from Autel’s own software. A Ford module reflash needs the pass-through route and Ford’s software. A comfort setting on a Volkswagen needs coding only. The Ultra can do all three on paper, and the brand list for each is different, which is why Autel and Amazon both ask you to send the VIN first.

The VCMI as a Measuring Instrument

Most scan tools can tell you that a sensor circuit has a fault. The Ultra’s VCMI can also measure the circuit. The manual devotes a long measurement chapter to three tools.

• Oscilloscope. It shows how a signal varies with time as a waveform on a two-dimensional grid. The manual lists safety rules before the first measurement: respect the input ranges, do not connect the scope directly to the battery, use a differential isolating probe for battery voltages and remember that the scope ground is for measurement only.
• Multimeter. It measures voltage, resistance and current on the same connector.
• Bus inspection. A CAN bus check lets you look at the network itself when modules stop talking.

The manual says the Wi-Fi connection between tablet and VCMI is the ideal mode for the scope, and that the tablet can be operated up to 50 meters from the VCMI. For a technician who traces intermittent faults, that is the feature that justifies the case. For someone who only reads codes, it is unused weight.

Is the Ultra Enough for You?

For a shop that diagnoses, codes and traces electrical faults, the top rows cover a week’s work. The bottom rows are separate purchases.

The picture below shows the tablet on a Mercedes-Benz GLE with the TPMS function status open. It is a fair summary of one limit: the service chapter in the manual covers sensor replacement and reset, and sensor programming is a job for a dedicated tire tool.

Will the Ultra Work on Your Car?

Autel says its updates give OE-level coverage for more than 80 US, Asian and European makes, and the manual describes several ways to identify a car: automatic VIN reading, manual input and menu selection. Amazon says more than 16,000 vehicles, which counts models and years. The two figures describe different things.

The special functions are narrower than the diagnostics. Programming is limited to specific BMW and Mercedes-Benz models, coding depends on the vehicle, and pass-through depends on the maker’s software. If a particular brand and job is your reason for buying, ask Autel or the seller about that exact car first. Our Scanner Finder gives a recommendation for your exact year, make and model.

Your First Day With the Ultra

This section follows Autel’s user manual. Menu names can differ slightly between hardware revisions.

1. Power up. Hold the Power/Lock button on the top right until the screen lights, then swipe up from the lock screen to reach the Job Menu. The manual suggests locking the screen when not in use.
2. Register and update. Create the Autel account, register the tablet with its serial number and open Update before the first job. The Job Menu also shows Settings, where Auto Update can be switched on.
3. Connect the VCMI to the car. Attach the main cable to the VCMI, tighten the captive screws and plug the 16-pin end into the diagnostic port. On a car without an OBD2 system the manual calls for an OBD I adapter.
4. Connect the VCMI to the tablet. The manual lists Bluetooth, Wi-Fi and USB. Open VCMI Manager, choose the mode, switch it on and select the device that starts with “Maxi” and ends in a serial number. A green BT, Wi-Fi or USB icon at the bottom right means it is ready. Use Wi-Fi for the oscilloscope and USB for reprogramming.
5. Identify the car. Use automatic VIN reading or choose the make, model and year by hand.
6. Scan. Run the auto scan, read the codes, open a system and use live data and active tests as the car allows. Save a report before and after the repair.
7. Charge before a long job. For programming, put the tablet on a charger and a battery maintainer on the car.

What Else You Will Need Besides the Tablet

A tablet this size is rarely the whole bill, and the sources are open about what sits outside the base kit. This list has no prices, because neither Autel nor Amazon gives a stable renewal figure and prices change.

• A battery maintainer. Autel’s manual tells you to attach one to the vehicle battery for any reprogramming, because voltage requirements differ by maker and a drop can fail the flash.
• The maker’s own software and subscription for pass-through work. The J2534 interface is hardware. Running a Ford, Volvo or Jaguar flash through it needs that maker’s programming software and, usually, access to its service information.
• The ADAS calibration frame and card. The manual’s ADAS Settings step binds a frame and asks for a validation code, so windshield and bumper work needs that separate hardware.
• A dedicated TPMS tool. The Ultra’s TPMS chapter covers sensor replacement and reset, not sensor programming.
• The optional Motor TruSpeed repair data. Amazon calls it an optional paid yearly function for US and Canada, with step-by-step repair guidance, technical bulletins and component measurement. It is not part of the base purchase.
• Updates after the first year. Amazon and Autel both give one free year, and neither states what the second year costs. Plan on a renewal if you work on new models.

None of this is a flaw. It is what separates a professional tablet from a code reader, and it is why the shop-planning exercise in Plan C below starts with the jobs you turn away today and not with the list of features.

Common Mistakes and Three Simple Plans

1. Buying it for ADAS. The base unit does not include the calibration package or frame.
2. Assuming every brand can be programmed. Programming is for specific BMW and Mercedes-Benz models.
3. Interrupting a flash. The manual warns that quitting during reprogramming can ruin a module. Keep the charger and battery maintainer connected.
4. Using the scope on the battery directly. The manual says to use a differential isolating probe for battery voltages.
5. Trusting a hardware number without checking the unit. The sources describe two revisions.

Plan A: A module swap on a BMW

1. Put a battery maintainer on the car and charge the tablet.
2. Connect the VCMI by USB and the tablet to stable Wi-Fi.
3. Open Programming, validate the VIN and follow the on-screen steps.
4. Read all modules again afterwards.

Plan B: An intermittent sensor fault

1. Connect the VCMI by Wi-Fi.
2. Read the codes, then open the oscilloscope for the circuit.
3. Watch the waveform while you wiggle the harness, and save the trace.

Plan C: A shop buying decision

1. List the last twenty jobs you turned away.
2. Mark which need programming, coding, measurement or ADAS.
3. Buy the Ultra only if programming or measurement is on that list, and price the ADAS package separately if windshield work is.

How the Ultra Compares With Other Tools in Our Reviews

Our Autel MS906 Pro review covers the step below, with coding on named platforms and no pass-through programming. Our LAUNCH PRO5 review covers a tablet with online coding that needs a separate accessory for key and module work. Our XTOOL D8W review covers a tablet that lists module installation for Ford, Lincoln and Mazda. The platform comparisons are in our Autel vs LAUNCH vs TOPDON page.

Who This Scanner Actually Fits

The Ultra fits a working shop that does European programming, coding on many brands and electrical diagnosis, and wants all of it in one case with a docking station. It also fits a technician who already owns OEM software licenses and wants one box as the pass-through interface. It does not fit a home mechanic, and it does not fit a shop whose main need is ADAS calibration or TPMS sensor service, because both need separate equipment.

Important Limitations of the Autel MaxiSys Ultra

• Hardware numbers differ by source. Screen size, Android version, RAM, Wi-Fi and Bluetooth generation are described in two ways.
• ADAS is a separate package. The base unit needs the frame and calibration card.
• TPMS sensor programming is not claimed. The manual has a TPMS service chapter for replacement and reset only.
• Programming is brand-limited. BMW and Mercedes-Benz on specific models.
• One free update year. Neither source gives a renewal cost.
• Counts are Amazon’s. The 3,000 tests, 40 resets and 16,000 vehicles are not figures Autel’s store page states.
• Motor TruSpeed repair data is an optional paid function for US and Canada, per Amazon.

Who Should Choose It, and What to Consider Instead

Choose the MaxiSys Ultra if you need coding, BMW or Mercedes-Benz programming, a J2534 interface and electrical measurement in one tablet kit, and your shop’s tool budget fits a workshop-tier purchase.

Consider the Autel MaxiSys MS906 Pro instead if you want Autel’s coding and active tests without pass-through programming or the measurement box.

Consider the XTOOL D8W instead if module installation on Ford, Lincoln or Mazda is the need and the Autel brand is not.

Consider the LAUNCH X431 PRO5 instead if online coding is the need and you will add the separate X-PROG3 accessory only if key work comes up.

Consider the Autel MaxiCheck MX900-TS instead if TPMS sensor programming is a daily job.

The picture below shows a diesel particulate filter regeneration on the same Mercedes-Benz, one of the services in Autel’s store list.

Methodology: How SCG Evaluates OBD2 Scanners.

Our Verdict on the Autel MaxiSys Ultra

The Ultra is the tablet in our reviews that combines coding, brand-limited programming, a J2534 pass-through interface and electrical measurement in one kit. Amazon and Autel agree on that, and they disagree on hardware details that depend on the revision you receive. If your shop does European programming and electrical diagnosis, it fits. If you only need diagnosis and resets, it is more tool than you need, and ADAS and TPMS sensor work will still need separate equipment.

Frequently Asked Questions

Does the MaxiSys Ultra support bidirectional control?

Yes. Amazon says 3,000 or more active tests. Autel describes active tests by type and gives no count.

Does it do ECU programming?

On specific BMW and Mercedes-Benz models, per Amazon and Autel’s store page. Coding covers many more brands, and what appears on the tablet depends on the car.

What is the VCMI?

A five-in-one box that works as the vehicle interface, an oscilloscope, a waveform generator, a multimeter and a CAN bus check, and as a D-PDU, J2534 and RP1210 pass-through interface.

Does it include ADAS calibration?

Not in the base unit. The manual has an ADAS chapter, and using it needs Autel’s calibration frame and a validation code from the ADAS Calibration Card.

Does it program TPMS sensors?

It is not claimed. The manual has a TPMS service chapter for replacement and reset procedures.

Why do the screen and operating system differ between sources?

Amazon and Autel’s store page describe Android 7.0 with 4 GB of RAM, and the July 2025 manual describes Android 11 with 8 GB. Autel also lists 12.7 inch where Amazon says 12.9. Ask the seller to confirm the unit.

How long are updates free?

One year per Amazon and Autel. Neither gives a renewal cost.

Does it need an internet connection?

Updates, reprogramming and the OEM server steps need a stable Wi-Fi connection, per the manual.

Is it compatible with my specific vehicle?

Use the Scanner Finder to check your year, make and model, and ask Autel or the seller about programming and coding on that exact car.