Coolant temperature warning light
Coolant temperature warning light
This lights up in blue when the ignition is switched on or the engine is started, then goes out as soon as the engine reaches its operating temperature.
If it turns red, stop and let the engine idle for a minute or two.
The temperature should drop and the warning light should switch off or turn blue again. Otherwise, stop the engine. Let the engine cool down before checking the coolant.
Call an approved dealer.