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Cannot connect OBD devices to ECU on Toyota vehicles

Motor Vehicle Maintenance & Repair Asked on December 27, 2020

I have two ODB devices. One is ELM327 Wifi OBD2 and the other one is OBDLink LX Bluetooth.

My problem is that none of the OBDs connect to Toyota cars.

More specifically:

I have tested the two OBD devices on 4 cars:
Mazda, Honda, Toyota(Auris), Toyota(Yaris)

  • On Honda and Mazda: The devices are connected and the measurements appear on the dashboard as they should be.
  • On the two Toyota cars: The OBD devices are connected but the measurements do not appear on the dashboard. Both cars were made on years near 2010 (don’t remember exactly).

I’ve tried both OBD devices with 2-3 different apps (including Torque Pro).

Here’s a screenshot from one of them that tries to connect to the ECU (After 10-15 minutes of waiting I closed the application)

enter image description here

It seems like Toyota cars have some sort of setting that restricts the connection between OBD and ECU.

Do you have any idea what might be causing the problem and how I could fix this?

One Answer

It looks like you are using Car Scanner app. Good choice.

connection profile Which Toyota connection profile are you using?

Car Scanner —> Settings —> Custom Sensors —> Choose Connection Profile —> Car Brand —> Toyota

Answered by zipzit on December 27, 2020

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