Good day, depending on the time that remains on it could be a serious problem, so I recommend you see it as soon as possible, if it happens for more than 10/12 seconds the preheating station may remain stuck and with this keep the spark plugs in state of permanent incandescence, destroying them and fragmenting them, falling the particles inside the cylinder with the consequences that you can imagine. If you dare and with a probe you can control the timing directly on the electrode of any spark plug from starting and if it exceeds a span of more than a minute, that's wrong.