PickGuideTHINKCAR THINKDIAG Review: ECU Coding and Bidirectional at $118 â Worth It?
The THINKDIAG sits in the middle of the THINKCAR lineup — more powerful than the $43 MINI but half the price of standalone units. At $118 it adds ECU coding and bidirectional active tests to full-system diagnostics.
Best for ECU Coding Price$118
THINKCAR THINKDIAG Bluetooth OBD2 scanner at $118. Full-system diagnostics plus ECU coding, parameter adaptation and bidirectional active tests via the ThinkDiag app. 4.5/5 from 527 reviews.
Pros
- ECU coding and parameter adaptation — recode TPMS sensors, adapt throttle bodies and more
- Bidirectional active tests that the cheaper THINKDIAG MINI cannot perform
- Full-system diagnostics over Bluetooth with the ThinkDiag phone app
Cons
- Costs nearly three times the THINKDIAG MINI — overkill if you only read codes
- Software access may involve annual renewals unlike the lifetime-free MINI
Verdict
The THINKDIAG earns its $118 price only if you need ECU coding or bidirectional tests — for basic code reading and service resets, the cheaper MINI covers it. For serious DIY diagnostics without a standalone scan tool, it is a strong middle option.