Get it checked soon
Glow plugs (diesel) warning light: meaning and what to do
What it means
The coil symbol on diesels. Normal for a few seconds at start-up; staying on or flashing means a glow plug or engine fault.
Can I keep driving?
Usually yes, carefully and for a short distance. The glow plugs (diesel) light means something needs attention soon, so have it checked in the next few days rather than ignoring it.
What to do
Wait for it to go out before starting. If it flashes while driving, have it checked soon.
What the color tells you
Amber or yellow lights mean a system needs attention. It's usually safe to keep driving carefully, but don't put it off.