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What to do when the glow plug light comes on

Model: (Various brands) Various
Part: Glow plugs

When the glow plug warning light comes on the dashboard of our diesel car, how should we behave? Glow plugs are used to heat the combustion chamber, making it easier to start the engine. Usually, the light comes on when the engine is started to indicate that the glow plugs are pre-heating and we should wait for the light to go out before starting the engine. If the light remains on or comes on while driving, it means there is a fault in the fuel system, so it is important to take the car to a mechanic soon, as continuing to drive may not be a good idea; it could be as simple as replacing worn glow plugs, but it could also be a problem with the injection system, so we should never underestimate a warning light on the dashboard.

Posted on 14 January 2025 by ScegliAuto

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