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    4. : What does the glow plug warning light mean on Audi A3?

What does the glow plug warning light mean on Audi A3?
Years 2012-2019

Answer

The warning light may mean that there is a problem with the engine preheating system. If the warning light is accompanied by combustion irregularities in the ignition phase, then the ignition plugs (all 4) may need to be replaced. It is advisable to carry out a diagnosis before the intervention as the warning light could also concern a more serious fault in the exhaust gas circuit.
Posted on: 23 May 2021 by ScegliAuto

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