QUOTE(Yoniso @ Oct 29 2014, 10:57 PM)
Hi matmoto5125,
Noted your comments.
I thought my car's sensors are strange because:
1. The beep is about 1 second delay after the motocycle passes by.
2. it will beep when passing under the smart tag toll (maybe the transmitter on the roof emits same radio frequency or the road sensor)
3. it will beep when passing through the parking gate barrier (maybe the road sensor and the metal gate barrier triggers it)
Do you get the same as above?
1. Yes, same. Because the motorcycle is fast when it passes by, not like it stayed at one spot and slowly approaching us. So when the motorcycle is gone (because it's fast), then only you can hear the beep. I figured that out after 2 days of city driving after I got the car.

2. Yes, same. This is because of the toll booth side barrier lol. You know, the guard rail beside your car preventing you from crashing into toll booth or TnG reader poll. Normal. Just drive not too close to them.
3. Yes, same. Refer explanation #2. The sensor detects parking ticket poll. You want to get parking ticket sure you squeeze the car nearer to the poll right?
No worries bro, the sensor will ONLY activated when you drive below 20km/h. So, if the sensor continue to beep even above 20km/h, then only can consider problem.

I hope this explanation helps fellow SE/AV owners.