Slight vibration when starting the engine

Hmm...
Isn't the motor warming up? My engine vibrates too, but I think it is normal. I can't say the same for your venue.
Also, I believe the voltage fluctuates when you start the car. You can't use certain features during start-up to protect them from sudden changes in voltage so there is a delay.

Purely a guess but it may be caused by the engine computer switching from open loop to closed loop control.
When the engine is first started it operates on a fixed set of fuel/air settings. When the engine is warmed up the computer switches to closed loop control where fuel/air ratio is set based on the oxygen sensor. Because your engine is already warmed up in may make the transition from open to closed loop sooner making it more noticeable.
I don't see how signal lights could be related.

imaddicted2u said:

I don't see how signal lights could be related.

Click to expand...

When the engine is warm, it starts 99% fine and runs stably, but sometimes a warm engine has a slight vibration when starting the engine.
But even so, the yellow light on the scoreboard (error) does not light up from vibration

leonidetin65 said:

When the engine is warm, it starts 99% fine and runs stably, but sometimes a warm engine has a slight vibration when starting the engine.
But even so, the yellow light on the scoreboard (error) does not light up from vibration

Click to expand...

Ahh, you didn't mean turn signal lights, you meant the Malfunction Indicator Lamp (MIL). Sorry, I misunderstood. If the vibration was caused by an engine misfire, the computer would cause the Malfunction Indicator Lamp (MIL) to blink. If the computer detected an ongoing issue it would illuminate the Malfunction Indicator Lamp (MIL) and keep it lighted up until the error was cleared.
Since there is no error indicated, I wouldn't be concerned about the vibration. If it gets worse, I would take the car in to be checked by the dealer service techs.

leonidetin65 said:

Hi all
The question is, I have been driving to Vene since 2021, only 12,000 km, I drive a little about 500 km a month and at low speeds, I began to notice that when I start a warm car, there is a light motor vibration for 1-3 seconds, then everything works smoothly mode. In this case, the signal lamps do not light up.

Click to expand...

Q. Have you ever run the fuel tank really, really low?

OhOh said:

Q. Have you ever run the fuel tank really, really low?

Click to expand...

Never, I go to a quarter of a tank and to a gas station and only fill up with good 95 gasoline

leonidetin65 said:

Never, I go to a quarter of a tank and to a gas station and only fill up with good 95 gasoline

Click to expand...

Goodo. That rules out one potential problem.

I also have a 2009 Honda fit; it has the same problem, a lot of vibration on a cold start, and lasts for 20 minutes or so. How much will it cost to fix? I have got some idea from this article P0009 Code: Fix Issue With Engine Position Performance Bank 2. But don't know how much it will cost if i go to mechanic.