diesel glow plug light · coil warning light
On diesel engines, this coil-shaped light shows the glow plugs are preheating the combustion chambers before starting - completely normal. It becomes a fault indicator only if it flashes or stays on after the engine is running.
If it lights up and goes off before or right as you start the engine, no action needed. If it flashes or stays on while driving, have the glow plug system tested - cold starts will get progressively harder until it is fixed.
Yes if it behaves normally during startup. If it flashes while driving, the car is still driveable now but expect hard starting, especially in cold weather, until repaired.
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Descriptions are for guidance only and do not replace a workshop inspection. If you are ever unsure whether it is safe to keep driving, pull over in a safe spot.
This warning light sometimes appears alongside these symptoms:
DEF Warning Light (Diesel Exhaust Fluid)
WarningThe diesel exhaust fluid (DEF, also branded AdBlue) used to reduce emissions in modern diesel engines is running low.
Diesel Particulate Filter (DPF) Warning Light
WarningThe diesel particulate filter, which traps soot from the exhaust, is clogged and needs to regenerate (burn off the trapped soot) or is otherwise faulty.
Seatbelt Reminder Light
InfoThe system has detected that the driver or a passenger is not wearing a seatbelt, usually combined with a chime.
Traction Control / Electronic Stability Control Light
InfoThis light (usually a car icon with wavy skid lines) flashes briefly when the traction or stability control system is actively working to keep the car stable, for example on a slippery surface.
