Glow Plug Light (Diesel): What It Means & What to Do
Severity: Low Usually safe to keep driving, but get it checked.
What it means
On diesels, the coil-shaped light means glow plugs are warming up. Wait for it to go out before starting. If it flashes while driving, there is an engine fault.
Typical color: Amber
Colors & variants
- Solid at startup: normal
- Flashing while driving: fault
What to do
- Wait for it to turn off before cranking
- If it flashes, have codes read