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Why Does the Car Indicate Carbon Build-up?

Model: Lexus IS MK 3 - Years: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
Part: Engine

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Open the bonnet of the engine bay. Check the spark plugs and injectors for any combustion residue. To check the carbon level in the vehicle, connect a small, dedicated computer with specific software and perform an emissions check on the engine.

There is likely a customer support programme from the car manufacturer that lasts for 9 years without a mileage limit. To prevent this issue, there are specific products available on the market (different depending on the type of engine) that can be added to the engine.

The maintenance operation depicted in the images is performed on a Lexus IS.


Updated on 20 February 2026 by ScegliAuto


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by ScegliAuto

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