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Guide to Replacing the Cabin Heater Radiator of the Audi A3

Model: Audi A3 8V, MK 3 - Years 2012-2019
Part: Heater core

These brief instructions will show you the main steps on how to dismantle and replace the cabin heater radiator of the A3, but also of the A1. First, get inside the vehicle and start by removing the glove compartment, unscrewing the fixing screws and disconnecting the electrical connector; you will then find the heater radiator at the back, as illustrated in the video. At this point, disconnect the coolant pipes, and remove the cabin heater radiator; replace it with the new one and reassemble everything!

Updated on 15 August 2026 by ScegliAuto

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by ScegliAuto

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