SUV had a rough idle. Spent high dealer fees twice trying to diagnose it.
Researching, I found videos on you tube concerning Check/clean the Mass Air Flow Sensor (MAFS). (I never heard of one)
So I check mine, although I change the Air filter every 6 months, The sensors on the MAFS was covered in a thick layer of dirt. Dealer never mentioned let's clean the Mass Air Flow Sensor and see if that works. (supposed to be cleaned every air filter change).
Search on you tube - how to clean a Mass Air Flow Sensor. Use only MAFS Cleaner and don't spray the electric contacts, spray only the sensors and described in the videos.
I used CRC from Lazada. https://www.lazada.com.ph/products/c...P6S05&search=1
No more rough idle problem.