Does The 4-Way For a 2023 Mazda CX-5 Require ECU Programming?

Updated 05/02/2023 | Published 05/01/2023

Question:

On the Mazda CX-5 2023, if installing one an aftermarket trailer wire harness, is the computer of the SUV going to be messed-up or need a re-start/re-fresh that a DIYer needs to consider?

asked by: Mark S

Expert Reply:

You will not need to have your ECU flashed or programmed to install the 4-Way Vehicle Wiring Harness # C45FV on your 2023 Mazda CX-5. This connects inline of your vehicle tail lights and uses a powered module to then send power to your trailer tail lights.

expert reply by: Bud M