Rattle noises are very common in many cars, even when new.
There are a thousand causes of unwanted noises in a car and I'm sure many of you had spent many frustrated hours trying to rid them.
I am very sensitive to interior cabin noises and will always spend alot of efforts trying to identify and eliminate them.
So I thought of starting this thread for everybody to share how they solve their unwanted car noises.
Here, I want to share one type that had been bugging me for 6 months and how to solve it. I have other cases and I will subsequently post them in this thread, with photos to guide. I drive a 2014 Sylphy.
This particular rattle noise is a single "tiak" sound that sounded usually when turning or small road perturbations at slower speed. It seems to come from front passenger dash area. It sounded like something loose hitting gently against plastic. Had tried to rectify it with tan chong during last 3 servicing but not successful. I was pretty sure the source is from within the cabin or dash area and not from engine bay area so I had been spending majority of my efforts internally.
I was wrong. It came from engine bay area. There is this cable that was not secured, at the battery side, near to the front left suspension top mount. See photo. If i manually hit it against the metal chassis, it produced a similar tiak sound. So i use a cable tie to secure it so it does not move freely. After that, that tiak sound was no longer there. I tested through 1 day of normal driving.
I am not sure what signal this cable carries but there is a similar one at the other side. I secured that as well. So look around your engine bay area for such unsecured cables and clamp it down!