Ur aircond seriously need to go for an inspection. Find a SC with experienced and knowledgeable technicians.
Nuff said about the transmission cable. Suggest u to make an appointment with ur service center to get the cable replaced. Prepare to wait for 2 weeks for the part to arrive. Its foc btw. Pls dun ask me to explain the technical aspect of the fault. As mentioned earlier, its a known issue.
Pb serves to remap the signal to the throttle resulting in a more responsive, spirited n pleasurable drive. Try it, I'm sure u will like it.

On the bad handling and stability issue
I have driven the 2 bezza auto variants, i.e., ADVANCE n Premium X countless times over long distances and at various speeds and opine that the vehicle stability of:
- the PREMIUM X is highly susceptible to crosswind when the car reaches a mere speed of  just 90 kph. At this speed the car begins to sway from left to right and vice versa on its own even if the steering wheel is held firmly. For comparison, a stock Axia G with no electronic control assist and no stability bars installed can travel up to 140 kph without being affected by crosswind.
- the PREMIUM X (this time with ARB + FSB installed) is LESS susceptible to crosswind at speed of under 140 kph, Above that, it begins to sway.
- the PREMIUM X (this time with ARB + FSB + Bi Spring installed + 15" Alza rim) is almost not affected by crosswind even if the car is driven up to its maximum speed of around 170 kph. (some claim that  max speed of bezza is a whopping 190 kph). Notice that the braking power of bezza X is not strong, advise drivers to keep the max speed under 140 kph.
- the ADVANCE (totally stock) is surprisingly VERY good. Crosswind effect is almost negligible even at max speed. The electronic VSC and traction control certainly have played a vital role in  keeping the car in a straight line despite attempt by crosswind trying to unsettle it.
So is it worth to spend 6K more for an ADVANCE variant? My answer is a thumping YES. If u r driving Premium X, advise u to at least install ARB + FSB for a start.

Distilled water into acid solution in the battery.
It's very corrosive and will damage plastic, paint and metal..
Need to do a thorough wash as the dryer the acid gets the more potent it gets.
If u smell a certain sweetiish kind of smell, means the acid is still around, continue washing..
But having said that, I'm not sure if u are at risk of shorting out the electronics in the engine..
I don't think u'll get anything from the SC as u accepted the car without checking and they have a strong case in saying that it was u who did the damage yourself due to your own negligence but blaming them, the SC...
It's your word against theirs.
But u can bring the matter up and see what comes of it but my advise is to not hope for much..
All the best.!

Get one of this and another horn terminal connector if you don't want to splice/cut your original wiring.

https://shopee.com.my/%E3%80%90Ready-Stock%...3004.2309325243