I tested the THINKCAR THINKSCAN 689BT, a bi-directional scan tool, on two diesel cars: a 2007 Opel Astra H 1.9 CDTI and a 2009 VW Golf 5 1.9 TDI. This is the short version. The full review has the specs, photos and every test.
What worked
Connection and full scan on the Astra took about four minutes, with no communication errors.
On the Golf, I ran bi-directional tests on the EGR valve (N18), the radiator fan and the other engine-bay actuators. All of them responded correctly.
ECU coding solved a real problem. The Astra had weak charging at 800 RPM. Raising idle to 850 RPM through coding brought charging into better parameters.
What I could not test
The Astra has its EGR, DPF and throttle valve deleted, so those actuator tests had nothing to command.
I ran no maintenance resets and did not generate the PDF health report.
CAN-FD, DoIP and FCA AutoAuth support comes from the spec sheet. I had no vehicle with a secured gateway.
Who it fits
Mobile mechanics and independent garages who want bi-directional control without a dealer-level tablet. If you only read and clear codes now and then, a cheaper reader is enough.
One practical tip: it ships without a screen protector. Apply one on day one.
Full review: https://diagnozabam.ro/sfaturi/blog/thinkcar-thinkscan-689bt-review-field-tested-truth/
Video test: https://youtu.be/6THkpjUA3BY
Where to buy: THINKCAR THINKSCAN 689BT, official product page
Discount code: DIAGNOZABAM for 10% off
Disclosure: DiagnozaBAM received a complimentary THINKSCAN 689BT for testing, as part of a collaboration with THINKCAR. All testing and opinions are my own. The link above is an affiliate link. Buying through it costs you nothing extra.
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