What do you mean car park bypass?? Izit the handbrake bypass for screen mirroring?
If you wan DIY, look here : https://forum.lowyat.net/index.php?showtopic=3325723
Since your car is S+, I recommend you change LCD, add rear camera, & auto fold mirror, at some accessories shop out there.. since the Honda Original is quite expensive around Rm3200++, maybe outside you can get all that half of the price.
url : http://www.honda.com.my/model/upgrades/allnewcity
No idea..
areola mention here : TCA AUDIO CAR ACCESSORIES. At Jalan Suria Setapak
Didn't notice before, "IF", your steering making "Horn" sound when you hard twist steering, you might wan to refer back to your SA/SC.

This warranty problem has been debate for many times dy.
If you scare void warranty, just make sure your car revert to original part before make any claim.

If your SA offer you any camera below RM 1K,is most probably gonna be done outside Honda and only provide limited warranty by that shop.
So if SA say no problem with the warranty, do not believe them 100%, because once got problem, they will say another thing.

Overall, if you're lazy, jz grab the 3.2k+ system from Honda as stated in website. If not, jz be a little active to chg all your car part to original before send car for claim warranty.

First thing first, are you sure your S+ is the most expensive variant? You are mistaken it with the V variant.