TOPDON UltraDiag 8-Inch Automotive Diagnostic Scan Tool & Key Programmer

The TOPDON UltraDiag is a professional-grade automotive diagnostic tablet that brings together full-system diagnostics, key programming, and bi-directional controls in a single device. For independent shops and locksmiths looking to expand what they can offer without managing a collection of separate tools, the UltraDiag delivers a compelling combination of depth and versatility — backed by 2 years of free software updates and coverage across more than 100 vehicle brands.

Full-System Diagnostics for 100+ Brands

The UltraDiag performs a comprehensive scan across every major vehicle system — engine, transmission, ABS, airbag, ESP, TPMS, immobilizer, gateway, steering, air conditioning, and more. Rather than returning a handful of powertrain codes, it gives you a complete picture of the vehicle's health across all systems in a single connected workflow. AutoVIN reads vehicle make, model, and year automatically, and AutoScan sweeps every system and retrieves all stored DTCs without any manual selection. Pro-level OBD2 functions include live data streams, freeze frame data, and ECU information retrieval.

Bi-Directional Controls for Faster, More Confident Diagnoses

One of the UltraDiag's most valuable capabilities for professional shop use is bi-directional control. Rather than reading data passively, you can send commands directly to vehicle components — activating fuel injectors, coolant pumps, windows, windshield wipers, and more — to test their response in real time. This makes it possible to confirm a fault in a specific component before replacing it, which cuts down on unnecessary parts purchases and speeds up the diagnostic process considerably.

Key Programming for 40+ Vehicle Brands

The UltraDiag doubles as a capable key programming tool, supporting over 40 vehicle brands for the full range of anti-theft and immobilizer functions:

• Number of Keys — view how many keys are currently registered to the vehicle
• PIN Reading — retrieve the vehicle's PIN code for programming
• Key Learning — add new keys to the system
• Remote Control Learning — program remotes and key fobs
• Delete Keys — remove lost or unauthorized keys from the system
• All Keys Lost — restore access when no working key is available

For shops that currently refer key programming jobs out, this capability alone opens a new revenue stream without requiring a separate dedicated programmer.

FCA Secure Gateway Support — Built In

The UltraDiag includes direct built-in support for FCA's Secure Gateway system via AutoAuth, allowing compliant professional access for diagnostics and service on Chrysler, Dodge, Jeep, and Fiat vehicles. No additional hardware or adapters are required. An active AutoAuth account is required per FCA policy and is sold separately.

30 Service and Reset Functions

The UltraDiag covers 30 of the most commonly needed maintenance service resets, including oil, EPB, BMS, DPF, airbag, TPMS, ABS bleeding, steering angle, throttle adaptation, injector coding, AdBlue, suspension matching, and more. Having these functions available on the same tablet you're already using for diagnostics keeps the workflow moving without switching between devices.

Repair Data Library and DTC Repair Guide

The built-in Repair Data Library provides fault code definitions, repair guidance, technical service bulletins, and dashboard warning light solutions — all accessible directly from the scan results screen. When you pull a code, you don't have to leave the tool to look up what it means or how to address it. The DTC Repair Guide walks you through definitions and repair procedures for all systems, including HVAC and supplemental restraints.

Hardware Built for Full-Day Shop Use

The UltraDiag runs Android 11 on an 8-inch touchscreen with 2GB of RAM and 32GB of onboard storage, expandable up to 128GB via the TF card slot. The 10,000mAh battery keeps the tablet running through a long day of diagnostics, and the magnetic VCI connects wirelessly via Bluetooth for hands-free flexibility around the vehicle. A USB Type-A port provides reliable wired connections, and the built-in HDMI port lets you project the diagnostic display for training walkthroughs or customer-facing presentations. Software updates are delivered over Wi-Fi and are included free for 2 years from purchase.

Expand What the UltraDiag Can Do

Two optional accessories extend the UltraDiag's capabilities further. The T-Darts transponder and remote tester adds chip identification, key ID reading, and remote frequency detection for expanded key programming coverage. The BTMobile ProS battery analyzer pairs wirelessly to transform the UltraDiag into a full battery and charging system tester — monitoring battery health, alternator output, and starter performance without a separate device.

Compatible Accessory

TOPDON BTMobile ProS 12V Battery & System Tester

Pair the BTMobile ProS with your UltraDiag to add professional battery and charging system testing — covering battery health, alternator output, and starter performance right from the same tablet.

Shop BTMobile ProS