Just found a Technical service letter issued by Mitsubishi Motors Cooperation on Xpander 4A91 engine knocking sound.
Applicable vehicles, phenomenon, cause, relevant parts all the details are available.
Xpander – 4A91 Knocking sound from engine
I just bought a Mitsubishi Xpander, which was built in 2015. It has been driven for less than 1,000 kilometers and is still very new. However, I found that the lighting on the dashboard is constant, and the knob of the air conditioner is also hard. Is this normal?