https://www.facebook.com/share/p/15QFWeVTzf/

AI TLDR:
**TLDR:** Bei Yan Diu Atto 3 (10 months old) suddenly emergency braked without warning on highway fast lane. 12V battery dead. Almost caused fatal accident. BYD service center TAK BAGI FACE.

What Happened:
- Driving from Melaka to Penang (family trip)
- Cheras-Kajang highway, right lane
- SUDDEN emergency brake without ANY warning
- All 4 wheels locked + can't push car
- Other cars nearly collided avoiding us

BYD Service Nightmare:
- Centre gives BS excuses ("no staff", "need appointment")
- Diagnosis: 12V battery failed
- Replacement: RM418 (no warranty after 20k km)
- NO WARNING SYSTEM for critical battery issue
- Previous charger issue still unresolved since Feb

The Kicker:
CCP car got NO warning system for 12V battery failure. Car becomes emergency brake on highway = instant death trap.

Original Text:
Pengalaman paling MENGERIKAN bagi kami sekeluarga apabila kereta BYD Atto 3 secara tiba-tiba brek mengejut ketika sedang memandu di lorong kanan lebuhraya!

Pada 1 May lalu, kami dalam perjalanan dari Melaka ingin pulang ke kampung di Penang dan singgah di Kajang sebentar untuk menghadiri rumah terbuka. Sewaktu di lebuhraya Cheras-Kajang, kereta dengan secara tiba-tiba brek mengejut tanpa ada sebarang amaran atau apa-apa 'indicator'. Di skrin panel kereta pula menunjukkan "Power System Failure" dan keempat-empat tayar kereta seperti di kunci.

Beberapa kereta hampir kemalangan kerana mengelak dari merempuh kereta kami yang tiba-tiba berhenti di lorong kanan.

Saya terus menelefon pihak lebuhraya untuk meminta bantuan mengawal lalu lintas. Alhamdulillah, kurang 10 minit pihak peronda sampai dan terus meletakkan kon di lorong kanan agar kenderaan lain berwaspada dengan kereta kami. Saya juga cuba untuk 'Off dan On' kereta namun tidak berhasil kerana tiada sebarang respon. Tayar pula seperti dikunci dan kereta tidak boleh ditolak walaupun gear sudah 'N'.

Dalam 1 jam, pihak towing insurance pun datang dan menunda kereta kami ke pusat servis di BYD Glenmarie Shah Alam. Jam menunjukkan pukul 7 petang dan saya hanya boleh meninggalkan kereta tersebut di situ kerana di luar waktu operasi. Kami sekeluarga terpaksa menumpang di rumah saudara yang terletak tidak jauh dari situ.

Pada keesokan paginya, saya menelefon BYD Glenmarie untuk memberitahu masalah kereta tersebut tetapi mereka memberikan pelbagai alasan seperti, 'tidak cukup staff', 'perlu appointment', dan pelbagai lagi. Disebabkan hal ini 'emergency' kerana melibatkan nyawa, saya tetap menegaskan dan memaksa mereka untuk memeriksa kereta tersebut.

Pada 4 petang mereka memberitahu kereta kami mempunyai masalah bateri 12V dan memerlukan masa beberapa hari untuk membaik pulih dan melakukan pemeriksaan. Saya minta mereka bertanggungjawab kerana saya perlukan kenderaan untuk pulang ke kampung namun mereka memberikan alasan "kereta pinjam sudah habis". Kami sekeluarga tercengang sebentar apabila alasan ini dikeluarkan oleh sebuah company kereta EV yang dikatakan 'gah' di Malaysia.
Saya terpaksa akur dan membatalkan hasrat untuk pulang ke kampung. Oleh itu, kami tiada pilihan lain selain pulang ke rumah di Melaka dan selepas beberapa kali pertelingkahan mereka mengambil tanggungjawab untuk menghantar kami pulang.

Apa yang boleh saya katakan servis company ini sangat teruk pada awalnya. Mereka seolah-olah tidak mahu bertanggungjawab dan menganggap hal ini sebagai perkara remeh. BYD Glenmarie meminta saya call BYD Melaka (tempat dibeli) untuk bertanggungjawab, BYD Melaka pula mengatakan 'diluar bidang kuasa kami kerana kereta hantar disana'. Saya tidak mampu berbuat apa-apa selain menunggu keputusan. Sebenarnya ada juga masalah lain yang saya telah lapor pada bulan 2 mengenai kerosakan 'Wallbox Charger' namun sampai sekarang tiada penyelesaian. Bila saya 'follow up' jawapannya sama, "tidak pasti bila boleh settle sudah lapor pada pembekal".

Pada 5 May, mereka memberitahu saya bateri 12V perlu diganti kerana 'low voltage'. Agak terkejut juga kerana kereta ini baru berusia 10 BULAN dan sudah mengalami masalah bateri. Kos penukaran bateri pula RM418 dan tiada warranty kerana kereta sudah lebih 20,000KM. Persoalan seterusnya, kenapa tiada sebarang amaran atau warning dan kereta terus brek mengejut, mereka menjawab, memang TIADA AMARAN atau indikasi jika bateri 12V bermasalah!

Post ini tidak bertujuan untuk menjatuhkan mana-mana pihak, hanya sekadar berkongsi pengalaman buruk menggunakan kereta BYD Atto 3. Disebabkan kejadian ini bermain dengan nyawa isteri dan anak-anak saya serta orang lain, maka terpaksa saya kongsikan kepada umum supaya sesiapa yang menggunakan kereta ini untuk lebih berhati-hati.

Sekian dari encik husband (pengguna Byd 10 bulan).

This post has been edited by DogeGamingPRO: May 5 2025, 06:57 PM

desmond2020 this also ccp punya kualiti, ada hati wanna say ccp jet is top quality LOLOL

when a car takes over the owner

Tunggu byd update firmware kasi warning bateri hangkang

CCP car nearly killed a family, blame bharat pulak.

Btw habis spam in telco sub ?

You think I'm stupid like you to keep posting in no post count kopitiam so that you can syok your own self with your anti China threads ?

People can see u oh wai...

China rent free inside your head

Itu safety feature utk BYD. Kereta tak terbakar atau meletup dan pintu tak boleh buka sudah cukur.

Care about post count,
6 months account
Proud of Senior member tag

Ok, that actually makes sense. At first I thought why would anyone care about post counts.

already got a big ass battery, still have single point of failure for keci miao 12v battery..

also what year is this? break = tyre locked? no ABS ke??

only 2 possibility. BYD failed design and quality issue, or driver sohai..

This post has been edited by brkli: May 5 2025, 07:09 PM

One sided story...
Wait for investigation.

These so called smart safety cars

Horror also

Which car will give indicator that 12V is running low?

wat does the 12V bateri do?

Everything. The main battery only powers the drivetrain to move the car.

All small car accessories no matter byd or tesla relies on the 12v

This post has been edited by Boy96: May 5 2025, 07:19 PM

why no?? for ICE if your car cannot start. that is an "indicator" your 12V running low.. owai..

isnt it simpler just to use a transformer? like on normal ICE car even with a dead battery once the engine starts the alternator can power everything.

Maybe send to Puspakom for neutral inspection. Oh wait, Puspakom semuanya ok like Cherry axle patah/break.

Funny. BYD Regular service they don't check condition of 12V battery?

Takyah pening takyah susah

Drive Myvi sudah

how is it charged? alternator?

This one isnt a dead 12v issue. SC still checking actually so lets just wait for result.

Thailand got few cases like this where the high voltage cables got chewed by rodents which resulted in similar thing happen. Car goes into emergency mode and shuts down

/k had the guts to say better buy EV car till die die.

now what? Suddenly crickets all around

The big battery charge the small 12v battery at a specific interval

car got DC DC converter. just wondering why if got this they still use 12 V battery.

Hahaha, where are the idiots who say

“China car better than Japanese cars nowadays”

“EV is the future”

“Every car has issues” ( Eh stupid of course every car has issues, the difference is whether the issue is minor or life threatening)

As usual, not a single sound now

When ppl say China cars are shit, pls listen to the experienced ppl who have owned at least 10 cars in their lifetime.

And no, China cars are far far away from overtaking the Japanese

EV car should already cukur didn't kaboom

big ass battery step down charge small 12V battery..

Bei gau diu la

Lol. Then EV should simulate such cranking sound too to warn the driver. Just for the sake of it

actually, from engineering POV, still make sense to have this separate 12V battery for things like open/close door, e-brake, light and etc. that is provided it is working alongside a step down (to 12V) main EV battery. reason being, if one of the battery got damage, those critical component of the car (like e-brake, hazard light, ecu stuff) can still function.

CCP cannot trust

Electric E brake should be banned. Cable brake provided the best redundancy.

This post has been edited by diffyhelman2: May 5 2025, 07:51 PM

Is time to install extra POV cam, for own potection.

Buy sino brand. Get sino problem

it's not just 'sino' brand, all brands same. when consumers are buying these cars especially greenfield tech, they are buying a tech/car that is not time tested yet and therefore potentially has many problems - mostly minor but some deadly.

tesla over time have patched many serious issues. the other brands will also need time for consumers to uncover issues like this and fix them. the problem is, will it be you who will find the problem and will u survive the problem

EV car 12V battery can low voltage? Cannot charge meh even with the main battery? No warning that the 12V battery is not charging?

This post has been edited by Penamer: May 5 2025, 08:08 PM

Yeah this ccp car also suddenly brake under the bridge. Kenot be trusted
https://www.facebook.com/share/p/1Jztx9GSwt/

https://www.reddit.com/r/HRV/comments/1ckvn...eaks_on_in_the/

This post has been edited by kcchong2000: May 5 2025, 08:11 PM

Plot twist: kena rasuk Skynet

Seems like design problem, whatever issues it has shouldn't slam all brakes at full speed

Really dangerous for driver and other road user

now see how BYD takes the feedback and improve on it. hope CS is good.

even Tesla got fatal accident before this.

see post 40. same issue?

"Post ini tidak bertujuan untuk menjatuhkan mana-mana pihak, hanya sekadar berkongsi pengalaman buruk menggunakan kereta BYD Atto 3"

nvm, ts already help him menjatuhkan sesetengah pihak. lel

This post has been edited by darkterror15: May 5 2025, 08:21 PM

It just braked la. It didnt shut down and lock all 4 tyres like the byd did la. Could be something blocked the adas sensor and tricked it.

This byd total shutdown and lock tyres.
Stupid cant even see the difference.

China cars really tak boleh pakai . Already said many times. They have all these weird issues

This post has been edited by sexysarah1992: May 5 2025, 08:24 PM

HRV is the sensitivity of the camera. When the flyover shadow, they detected it is a car in front so terus jam brake. But this case no one bising.

For this ccp car dunno what the case. So far heard first case for atto. As if similar case happened before all forum bising and fagbook also cakap dah.

Might be an exaggeration, usually on cases like this it just simply cuts power, so when press accelerator theres no response, but the regen braking is still active so thats why poster felt like the car is jamming the brakes.

So? Not dangerous?

This is /k la got what can jatuh lagi
Jan 18 also tak jadi

Safer than the byd. At least u still have control of the car. Byd u dont have control of the car.

Totally different issue. Byd issue has nothing to do with its sensors. Instead, its something more serious inside. Thats why China cars are crap because its what you cant see that they cut corners

Kekwa
Likely the faulty charger causing premature failure of the battery.
Also another problem with direct hub motor like that. While conventional ice vehicle has a separate transmission that you can decouple the wheels from the engine (neutral), an ev like this likely has hub motor. While it's easier to implement regenerative braking, also likely the neutral is not true neutral but active neutral. Need a complete circuit to engage neutral otherwise it just default to "in gear" or lock.

Lanijiao lar. At the end of silap hari bulan both scenario also can die. Don't try to cover it.i buy car to prevent accident not give me free accident

This post has been edited by kcchong2000: May 5 2025, 08:29 PM

The code forgot to add a test for speed and other condition.

If (battery12V < 12) slamBrake();

It supposed to be:

If (battery12V < 12)
{
if ((speed < 10) && (rearCarDistance > 500)) slamBrake();
}

And it also doesn't make sense to completely brake a car if the 12V battery is dead. Purely there's a bug in their software that get into an unknown state.

Inb4 kalau ICE sudah hit and accident. This is safety feature

how's your eMas7?

So far ok

Tbf also saw got some ppl kena 12v related issue, either got warning pop up then go SC check, or got case car cannot start at all so guess the 12v kong

hmmm.... root cause is?

Byd glenmarie points finger to byd melaka

Byd melaka wash hand back to byd glenmarie

Very good feedback. Very good CS.

inb4 root cause is ccp car owaiii

The first case got ccp geely engineer come inspect, in the end macam replaced the DC-DC converter

But recent software update got mention something about DC-DC converter, so may have been something related to software got some edge case causing the big battery not charging the small battery correctly, not sure but hopefully fixed

Heard two or three cases so far, but haven’t heard any after the recent update. So it’s either software related or just rare lemon faulty DC-DC.

Aircond power is draw from the main battery right?

IINM Proton emas also has 12volt battery in it, when i pasang dashcam that guy said can pakai parking mode which i'm worry it is drain the battery and spoil faster

Wah like this next time when I hit the highway must stay clear of EV. KNN suddenly emergency brake when one least expect it.

If not mistaken macam the DC converter rosak, supposingly DC converter charge 12v battery constantly when it drop to certain level.

.
From the OP, BYD SC stated it was the 12V battery issue,.......

Pada 4 petang mereka memberitahu kereta kami mempunyai masalah bateri 12V dan memerlukan masa beberapa hari untuk membaik pulih dan melakukan pemeriksaan. ...

Pada 5 May, mereka memberitahu saya bateri 12V perlu diganti kerana 'low voltage'. Agak terkejut juga kerana kereta ini baru berusia 10 BULAN dan sudah mengalami masalah bateri. Kos penukaran bateri pula RM418 dan tiada warranty kerana kereta sudah lebih 20,000KM. Persoalan seterusnya, kenapa tiada sebarang amaran atau warning dan kereta terus brek mengejut, mereka menjawab, memang TIADA AMARAN atau indikasi jika bateri 12V bermasalah!
.

I think so.. the emas system is the same lah.

But BYD if the big battery below 20% charge, it wont charge the small 12v battery, dunno if geely program it to be the same

This post has been edited by Boy96: May 5 2025, 08:47 PM

Ada amaran la. Amaran Itu ialah jangan melebihi 20,000 km la untuk EV.

This post has been edited by Roman Catholic: May 5 2025, 08:51 PM

This proved the car is theft proof.

Take out battery, no way to spin the wheel. Unless thief comes with tow truck

Oh my goodness.

Use same battery like normal ice car or got special different battery?

Don't worry guys. Let those early adopters face this problem, by the time we buy ev next few years, all problem solved already. Haha

Same battery as old myvi and axia without start stop

Battery code 38b20l

Habislah so dangerous, cheap sale coming rm10k for a new atto 3 ultra

Axialution

When your 12V battery almost Kong, your car is hard to unlock and start.

It's a normal 12V lead acid battery however because of it's special casing design it cannot be used in ICE because it cannot be secured safely. So owners of EV has no choice but to buy batteries from SC only. Knowing how genius owners are, yup I have seen ICE batteries fitted into EV and it's not secured at all, then ask apahal battery cepat Kong ya ?

well ABS use electronics sensor, eletric motor pump too.. owai..

this is why i hate cars full of electronics inside

if this happens to an ICE car, at most the engine would stall...that's all
the car would glide to a standstill, it won't completely locked up

is it "normal" lead acid? i thought it is those deep cycle lead acid battery like those used in auto gate and as some(older) solar battery.. also EV dun need the high CCA which needed by ICE to start the car..

This post has been edited by brkli: May 5 2025, 09:07 PM

You still so dumb still dont get my point

Honda case is due to adas camera kena tipu with its surrounding. Maybe a shadow or something. It can happen to any car using the same system

BYD case is due to unknown causes which is extremely dangerous since it shuts down the whole car and lock up the wheels. This is unacceptable as its not supposed to shut down the car in whatever scenario

one guy say can plug in V2L adapter to get the main battery to charge the 12V battery

The car is powered by LFP battery with high voltage but death on the road because the small old battery died ??? How

No ah, happen to me twice on Volkswagen before.. alternator died on fast lane car shuts down and engages EPB. Had to dolly up tow truck

Yes normal lead acid

This post has been edited by Boy96: May 5 2025, 09:14 PM

Honla sent their regards

If I start mocking you and your ccp stance will you doxx me?

This is trade off when buying china car. U dono what suprise u kena until u kena

Still want to drive the death trap? Faster faster half price n buy n Axia better.

siapa suruh kau tak sapport buantan ev MY?
ohwaiwai

U still dare to buy China brand car?

More incident will happen in the future.

Wait a minute, didn't the VW give you a warning notice which could read something like this "Stop driving because the charging system had failed" before the VW shut down ?

Nope. No warnings as well terus shut down

The only time the battery light came up was when the fan belt snapped, but that one didnt shut down by itself

This post has been edited by Boy96: May 5 2025, 09:18 PM

happens to me before, wiring issue (later found out to be rat bite).
when driving, suddenly loose power. radio died, lights dim.
i can still drive so long i maintain >2k rev, alternator still supplying just enough power for vital components like hydraulic.

i noticed the issue & exit on next petrol station.
as i glide to a stop, rev drop, engine died, steering bcom stiff bcoz lost hydraulic, & it will lock up if i turn the wheel.
but managed to bring to a safe place to stop, pop the hood, giv the battery & alternator a couple of wack, then able to start bck.
i quickly to workshop.

From engineering pov, what you wrote doesn't quite cut it unless there's redundancy factored in. If the 12V kaput, can those critical components still work? I know in ICE cars, the alternator can still supply power.

EPB is hated by so many people for a reason

my car experience the same too but my car got no EPB
the engine basically just stall and it glides
i manage to drive the car to the emergency lane

Can. We've tried before, unplug the 12v on the ev , car still runs as usual

That is very bad indeed. I would have expected VW to have such a warning system in place given that the alternator had failed. I know for sure that Mazda has the warning in their system. Actually all manufacturers must have this in their system to notify the driver to take immediate action before something worse happens. It's bad enough many are misinterpreting the battery warning light itself, so a warning message is a really good measure to be adopted.

There's a reason why BYD is called "Bei Yan Diu".