Scion Diagnostic Scanners and Adapters

Written by the YOUCANIC technicians in Towson, Maryland, from the UCAN-II Pro coverage database and our own shop work. Updated October 24, 2026.

A Scion is a Toyota with a different badge, and the coverage database treats it that way: the same Engine and ECT, ABS/VSC/TRAC, EMPS, SRS Airbag, Main Body and Combination Meter modules, the same special function names and the same zero point and bleeding routines the dealer charges an hour of labor to run. The parts store code reader sees the engine and nothing else. The tools below are what we use in our own shop in Maryland to reach every module on a tC, xB, xD, iQ, FR-S, iA or iM and clear the ABS, airbag and body lights for good. The coverage database lists the USA market Scions, the tC, xA, xB, xD, iQ, iQ EV, FR-S, iA and iM, with 14 control units on a 2015 iQ and on a 2016 iM. If you own the Toyota twin of your car, the Toyota page reads the same. Pick by what you need to do.

Which Scanner Do I Need For A Scion?

CHECK ENGINE LIGHT ONLY

UCAN-GO

Reads and clears engine codes from your phone and gives you a live gauge dashboard. It does not see ABS, VSC, airbag or body modules, and it cannot run a zero point calibration or a brake bleed. Right if the only light you care about is the engine one.

EVERY MODULE, EVERY SERVICE FUNCTION

UCAN-II Pro, new or open box

Full system, bidirectional, lifetime free updates. Reads and clears every control unit, runs active tests and the Toyota family service functions on a Scion: ABS and VSC air bleeding, zero point calibration, reset memory and test mode, transmission learning value reset, CVT oil pressure calibration, TPMS ID registration, oil maintenance display switch. The tool to own if you keep a Scion running.

ONE JOB THIS MONTH

Rent the UCAN-II Pro for a week

Same scanner, shipped both ways free, with a refundable deposit that comes back when the scanner does. For the one brake bleed, zero point calibration or airbag code you need done once.

What The UCAN-II Pro Does On A Scion

• ✓ Reads and clears codes in every control unit: 14 modules on a 2015 iQ and on a 2016 iM, from Engine and ECT and ABS/VSC/TRAC to the Tire Pressure Monitor, EMPS steering, Air Conditioner, SRS Airbag, Main Body, the door motors, Combination Meter, Occupant Detection, Cruise Control and Remote Engine Starter (the table below lists them)
• ✓ Brakes: Air Bleeding and VSC Line Air Bleeding in ABS/VSC/TRAC after a caliper, line or actuator job, ECB Utility, Inspection Mode (VSC and TRAC), VSC/TRAC/4WD Control Prevention Mode, ABS History
• ✓ Zero point: Reset Memory, Test Mode and Signal Check, Zero Point Calibration, Sensitivity Check, Zero Point Calibration and Sensitivity Check, Deceleration Sensor Zero Point Calibration, Torque Sensor Adjustment on the EMPS
• ✓ Engine: AF/O2 Sensor Operation, Check Mode (DTC), Evaporative System Check, Secondary Air Injection Check, All Readiness, PM Regenerate Mode, Fuel Density Learning Value Reset, Learning Value Reset, VIN, ECU Exchange, Operation History, Trouble Factor Code Clear
• ✓ Transmission: Learning Value Reset, ATF Thermal Degradation Estimate Reset, CVT Oil Pressure Calibration, A/T Code Registration and A/T Code Reset, Shift Control Synchronization, iMT Installation Information Reset
• ✓ Service and body: Switch Oil Maintenance Display, Switch Battery Type, Remote Engine Starter Initial Registration and ID Registration, Abnormal Operation History, GPF Deposition Values Save, Write and Clear
• ✓ Active tests on Engine and ECT, Cruise Control, ABS/VSC/TRAC, SRS Airbag, Tire Pressure Monitor, Occupant Detection, Remote Engine Starter, EMPS, Air Conditioner, Main Body, Sliding Roof, Combination Meter, Power Source Control and Starting Control
• ✓ Live data with graphing and recording, plus TPMS: ID Registration on the car and programs the U360 replacement sensor from the tablet

Service Functions By Job On A Scion

On the tablet you pick the control unit, then the function category, then the routine. The Scion database uses the Toyota categories, Special Function (the service routines) and Active Test (bidirectional tests). These are the routines the coverage database lists for Scion, grouped by the job you are doing. Names are as they appear on the tablet. Coverage varies by model and year, so check yours before you order.

What The Scanner Sees On A Scion

Two vehicles pulled from the coverage database, with the control units the UCAN-II Pro lists on each. Every unit gets fault codes, live data and, where the database shows it, active tests and special functions.

Symptom, Then The Routine That Fixes It

• ABS and VSC lights after an alignment, a steering rack or a sensor replacement: Reset Memory and Test Mode in ABS/VSC/TRAC, the zero point calibration for the yaw rate and deceleration sensors.
• Spongy pedal after a caliper, brake line or ABS actuator job: Air Bleeding and VSC Line Air Bleeding in ABS/VSC/TRAC.
• Harsh or hunting shifts after a transmission fluid service on a tC or xB: Learning Value Reset in Engine and ECT, then ATF Thermal Degradation Estimate Reset where the car lists it.
• Tire pressure light after new sensors: ID Registration in the Tire Pressure Monitor module, with the U360 sensor programmed from the tablet first.
• Maintenance required light after an oil change: Switch Oil Maintenance Display in the Combination Meter.
• Steering pull or an EMPS warning after a rack or column replacement: Torque Sensor Adjustment in the EMPS module.

Frequently Asked Questions

Will it do the zero point calibration on my Scion tC after an alignment?

Yes. Reset Memory, Test Mode and Signal Check are in the ABS/VSC/TRAC special functions, along with Zero Point Calibration and Deceleration Sensor Zero Point Calibration on the cars that list them by name. That is the routine that clears the ABS and VSC lights after steering or suspension work.

Can it bleed the ABS on my xB after a brake line replacement?

Yes. Air Bleeding and VSC Line Air Bleeding are in the ABS/VSC/TRAC special functions. The ABS bleeding guide covers the pedal and valve sequence.

Does the Scion page cover the FR-S and the iA?

Yes. Both are in the Scion coverage database alongside the tC, xA, xB, xD, iQ and iM. The FR-S and the Mazda built iA carry their own module lists, so check your exact car in the coverage checker for the routines you need.

Does it program keys or smart keys on a Scion?

No. Key programming needs the Toyota server through Techstream. The UCAN-II Pro does diagnosis, live data, active tests, calibrations and the service functions listed above.

Can I rent it for one job?

Yes. The rental is a one week rental plus a refundable deposit that comes back when the scanner does, shipped free both ways. Most Scion renters want a brake bleed, a zero point calibration or an airbag light cleared.

How do I know my exact car and function are covered?

Use the coverage checker by model, engine, year and module, or call 1-888-959-4265, Monday to Friday 9 AM to 4 PM Eastern, and a technician will tell you plainly. If it does not do what you need, we will say so. Every scanner also comes with 31 day returns, no questions asked.

Working on a different make? See the scanners by make hub, the Toyota page, the service functions explained one job at a time, and the step by step repair guides on youcanic.com.