I got this pickup truck (2013 3.2L Wildtrak) April last year. Friday night, I hear a knocking soumd in the middle of the dashboard. 3 taps. I drive a short distance and stop. Then 3 more taps. I drive home. No more knocking sound.

Nexr day, I turn the key to warm the glow wire. 3 taps again. Didn't use the car Saturday.

Today, I took the car out for a spin. 3X along the way i hear the knocking sound while the car was running.

Not consistent. It only knocks 3, 5 or 7X all the time whenever I turn the key to warm the coil or glow wire before starting.

I checked the oil, it's within the dipstick tolerance. No gauge lit up, no overheating, car runs ok with no hesitation or performance deterioration. Am stumped. Gonna have the car checked tomorrow with the dealer.

Anyone experienced something like this?