i am not sure about urs problem but for mine it sound on dashboard on passenger and driver side
and i just notice that the sound was came from the plastic cover for A pillar at the end there which near to the dashboard
u can try to press on the plastic cover lightly to see whether tat is the sound that u stated
for my case i use a small tissues to stuck it between the front windscreen and plastic cover and the sound gone 
but i just realise there is a 'new' sound this few weeks and it seems like the sound came inside the dashboard which i cant do anything 

guys,i am driving city 2012
have u all notice that sometimes when speeding at 100-110km/h on highway
the car will shaking around and it seems like it will go to the left and right on a straight road
at first i thought vsa is doing its job but there is no signal light blinking at that time,
i had went back to the sc and they already fix back the alignment and balancing but it still happen once on a highway
i'm not sure about the wind and it doesn't happen all the time so i'm not sure what is the problem,any ideas?

i tried this on my city 2012 and it works 
although it can't prevent ppl to 'cucuk' it but at least it sounds when someone try to open it 

Bro i do exactly what u said and the sound still existing. I think if i have time i will dismantle the drawer and trace the sound it should be at the center of the air beg area because when press at the air beg area on top the gone just gone.

No need drive at the uneven road when u knocking on top air beg area already have the vibration sound !

Yup it happen once to me but after balancing and alignment at outside workshop problem solve

tires pressure front 32 and back 31

for my case it sound only when i slap on the dashboard or driving under the sunlight,the sound that came from driver side dashboard
i think the dashboard sound is due to i didn't put a wax on the dashboard frequently and expose it under sunlight maybe?
because my friend who is also driving city 2012 for 1 year didn't had any sound on the dashboard area
he always put on a kind of wax on the dashboard everytime after he washed his car
and  can feel the heat is coming up from the dashboard area everytime when expose to sunlight 

what kind of sound? is it like a metal-to-metal sound at passenger side airbag? i have it too, but solved it at honda sc in melaka.. they dismantle the dashboard and put some sponge in between the nut..

or if your are talking bout 'duk duk duk' sound, it come from the back seat 60:40 clipper.. wrap the metal with thick tissue then put back ur seat..

so which one punya sound? 

i tried this on my city 2012 and it works 
although it can't prevent ppl to 'cucuk' it but at least it sounds when someone try to open it 

I did this too and still kena cucuk

same as my friend but at least it sounds when force open right?
the easiest way i think is to cover the hole with number plate,i think this is the disadvantages of having key hole on boot part 
but the design for this key hole is quite impressive,for those newbie who dunno how to cucuk it will spoilt the key hole easily and prevent the boot from opening

another weird thing is the alarm module is inside the boot.... when u open the boot the sound is loud and sharp, but when u close it the alarm gets muffed

what kind of sound? is it like a metal-to-metal sound at passenger side airbag? i have it too, but solved it at honda sc in melaka.. they dismantle the dashboard and put some sponge in between the nut..

or if your are talking bout 'duk duk duk' sound, it come from the back seat 60:40 clipper.. wrap the metal with thick tissue then put back ur seat..

so which one punya sound? 

It's more to plastic vibration sound instead of metal. Like something has loosen inside the dashboard. When I place my hand and give some pressure on it, the sound is gone. How exactly you told SC on this problem, and do they test drive and confirm that the sound does exist before they work on it?

About the 'duk duk' sound you are talking about on the back seat, which metal you are referring to? My car seem to have that annoying sound as well, but not all the time... Thanks in advance for ur advise

i bring my car over and said there is annoying sound from the dashboard.. they test drive with me in car and i point the sound to him.. luckily the sound is replicable..

for the 'duk duk' sound, metal i mentioned is as pic below.. the one in black, near to the seat belt, which hold the seat.. (ah hard to explain..  )

Bro mytaffeta mean u dashboard rattling sound solve by them?

yep bro, this one cannot diy cuz it need special tool to dismantle the dashboard..

On 8 April i will get my all new honda city V spec, modern steel colour.. Really excited... Hooray!!

the alarm buzzer is store inside the boot,if i'm not wrong it is located at the left side of the boot under the cover
i'm not sure about the alarm module but i heard that some of the cars alarm module are store in the boot,not sure for safety or what