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How to Replace the Engine Control Unit in a Toyota Corolla?

Model: Toyota Corolla E160, E170, MK 4 - Years: 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Control unit

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Video tutorial

In this tutorial, you will see how to replace the engine control unit in a Toyota Corolla, a very simple and quick operation. First, ensure that the key is not inserted, then open the bonnet and locate the control unit on the driver's side.

Disconnect the large upper connector by unlocking the clip, unscrew the two fastening bolts using a socket spanner, and remove the control unit from its housing. Now, simply insert the replacement and mount it following the exact reverse procedure.


Updated on 25 September 2026 by ScegliAuto


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by ScegliAuto

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