iCarsoft CR Legend Review: TPMS Programming Built Into a Pro Tablet

Most scan tablets treat tire pressure sensors as an afterthought: they can read the sensor IDs stored in the car, maybe write a new one in, and that is the end of it. The CR Legend is different on paper. It carries a TPMS programming module of its own, plus a battery tester and a videoscope, for $679.99.

The question buyers keep asking is whether that makes it a better deal than the CR Max P, which costs $80 less. We think the answer depends on one thing, which is how often a tire sensor crosses your bench.

We found no independent test of the Legend, so this review reads the maker's documentation and compares it line by line with the Max P's own page.

What the TPMS module does

TPMS stands for tire pressure monitoring system. The small sensor inside each wheel reports pressure to the car, and when you replace one, the car has to learn the new ID. iCarsoft splits the job into four parts: activate a sensor to read its ID, pressure, temperature and battery state; program a blank or replacement sensor; relearn the IDs into the vehicle; and run full system diagnostics for TPMS fault codes.

The Max P's own function table lists a TPMS reset for 56 makes, described as looking up IDs from the ECU, entering replacement IDs and testing sensors. That is the relearn half of the job. The Legend's pitch is the other half: writing IDs onto a blank universal sensor, so you do not have to buy a branded one.

The kit around the tablet

The hardware is a 5.99-inch Android 10 tablet with a 2.0 GHz quad-core chip, 4GB of RAM, 64GB of storage, Wi-Fi, Bluetooth 5.0 and an 8-megapixel rear camera. The screen is 1440 by 720.

The add-ons are the interesting part. iCarsoft includes a thermal printer, a battery tester module with heavy clamps, a digital videoscope for looking into cylinders and tight spaces, and ten OBDI adapters (Mercedes 38-pin, Toyota 17- and 22-pin, Honda 3-pin, Chrysler 6-pin and others) for pre-OBD2 cars.

Buy those separately and the price climbs fast, which is why the bundle is the value argument. If you would never use a videoscope, you are paying for kit that stays in the case.

Commands and coding

The Legend also does bi-directional control, which means it can send a command to a part: trigger a key fob, flash hazard lights, test an alarm. It lists activation tests, actuator verification and system calibration.

The coding claims get less convincing. The page mentions performance tuning, torque curves and ignition timing adjustment, but gives no example vehicles or procedures. We would treat that as marketing and judge the tool on its resets and component matching.

Service functions: the weak side

Only 23 reset and maintenance functions are listed, including oil, EPB, SAS, DPF and battery registration, plus items such as AdBlue, tire reset and coolant bleeding. The Max P lists 49 or more, with nine daily resets and 40 advanced ones.

That gap is the case against the Legend. For pure maintenance resets, the Max P is the broader tool and the bigger screen, with a lifetime free update policy against the Legend's three years.

Screen size and the bench

The Legend's display is under six inches, which is phone-sized, while the Max P uses a 10-inch panel at 1280 by 800 and lists wireless Bluetooth with an 8-hour battery. For TPMS work, where you stand at a wheel with a sensor in one hand, a compact tablet is easier to hold. For scrolling long live-data lists or reading a function menu, bigger wins. Pick on the job you do most, not on the spec sheet.

The update clause

iCarsoft advertises three years of free software updates on the Legend, and contrasts that with competitors that charge after one or two. That is fair, but most iCarsoft tablets promise free updates for life. After year three, you should confirm the price of renewal before you buy.

So which one?

Choose the CR Legend if you change tire sensors regularly, run a small shop where the printer and battery tester will earn their keep, or work on older cars that need the OBDI adapters. Choose the CR Max P if you mostly want resets, a larger screen and lifetime updates, and handle TPMS only rarely. Choose neither if your needs stop at one brand; a single-brand iCarsoft tool costs a third as much.