Voltage too low causing sensor to malfunction? Owh shit

Again. You are making baseless conclusions. Tesla clearly says that it is a beta and you should use it with caution and full attention like normal driving. The problem was due to users not following instructions.

BYD’s problem is simply because of shit engineering and software integration.

Now you know why I am fucking strict with my clients.

basically one is a lab rat and take the risk associated.

This post has been edited by ipohps3: May 27 2025, 04:20 PM

Problem with CCP cars are more than just design btw. They refresh their models like candies. Every 1-2 years got complete facelift like its a new model introduction. This may be exiting but it will always be a supply chain nightmare. They’re definitely not going to spend making parts for the outgoing face design and we as Malaysians basically GG.

Just look at X70 and X50. In China they have face-lifted, but lifted, restructured etc. these cars like 5-6 times while Proton only did it once. Almost impossible for them to fully and timely support part supply anymore if the parts come from China.

Can’t blame them on this though. In China car is pakai buang. We haven’t reached that level of mindset yet.

Again. Same mistake. One is asking you to keep your hands on the steering even with the feature on. All models do this including BYD and Proton/Geely for your info.

The other is shit Engineering.

how to pakai buang.. TAX banyak leh

This is true for cars with BCM (body control module) and a weak battery will make the unit go haywire.

For my Exora, a weak battery will cause all the lights on the dash to light up and gearbox durian symbol will appear.

For my forfour, the entire dashboard will light up and traction control plus electric power steering will stop working.

Old cars not affected. At most, the interior light will become dimmer and engine difficult to start.

your argument is one sided and protective of the west.

i have no problem calling out both.

btw, mind to say why it is shit engineering according to you?

This post has been edited by ipohps3: May 27 2025, 04:29 PM

Follow Microsoft tactics. Ship first, fix later.

yeah and most companies do that sadly. consumers suffer

The door sensor assume door opened and emergency brake? No warning also?

If kena rear ended then susah oh.

and too bad those that follow closely still have to pay for insurance..rule is "you kiss you pay"

Do a door sensor need to be that sophisticated? What the door sensor use for?

1) door sensor can be just a contact switch. An On/Off signal to the ECU. No electronic require inside. Keep it simple, cheap and failsafe.

2) If there require some crazy electronic stuff inside the switch, the circuit can be design to take wide range of voltage. 10-14.4v is enough to operate and tackle the low/high voltage of the battery. Battery don't drop dead till 0v.

Some like Cybertruck has ECUs inside the doors.

.
Fyi, .......

Gemini AI Overview

In an EV car, door sensors typically rely on a 12V battery system for their operation. The low voltage cut-off (LVC) for a 12V battery is usually around 10.5V, where the battery will stop running the load. However, some LVCs are set higher, like 11V, to improve battery life and avoid deep discharge. If the voltage dips below this threshold, it's likely the door sensors, which are part of the car's 12V system, will fail to function correctly. A continuous low charge can also damage the battery through sulfation.

A 12V car battery is generally considered to be failing if its voltage drops below 12V when the engine is running. When the car is not running, a voltage below 12.4V can indicate a partially discharged battery, and below 11.8V suggests it's completely discharged or dead.


https://hackmd.io/@insightinnovator/S1EAUde51e - The Impact of Vehicle Electrification on Automotive Door Lock Detection Sensors - 17 Feb 2025
... As EVs become more popular, automakers are responding by installing more advanced door lock detection sensors. These sensors need to integrate seamlessly with the vehicle’s electronic systems, ensuring that the locking and unlocking mechanisms function efficiently.

Moreover, the increasing adoption of connected car technology means that vehicle security systems are becoming more interconnected, with sensors feeding data to central control units for real-time monitoring. As a result, the need for highly responsive, accurate, and fail-safe door lock detection systems has become more pronounced. The electrification of vehicles, therefore, drives the demand for more sophisticated sensors that offer better performance and reliability. ...

.... One example of this integration is in keyless entry and ignition systems, which are becoming more common in EVs. Door lock sensors now need to work with wireless communication systems, allowing the vehicle to automatically detect when a key fob or smartphone is nearby and unlock the doors accordingly. This seamless interaction between the lock detection system and the vehicle’s electronics is key to the overall user experience of electric vehicles. ...
.

This post has been edited by lurkingaround: May 27 2025, 06:34 PM

I am not protecting the west. I’m saying it like it is.
When there is a problem with a west product, I don’t have an issue calling it out.

But your argument on “Tesla is the same” in this context is not valid. The article that was shared says there was an accident because the driver chose to ignore fsd warnings.

That’s why most medical and automation equipment relying on Microsoft run on older versions on Windows. Ship first, fix later shouldn’t be done on critical safety features.

Nope.

Sensors if they are electronics, usually 5V and 3.3V requires to be regulated. This regulation comes from buck converters.
When the EV is powered on the onboard DC/DC takes over , and the battery acts more like a capacitor rather than a battery.



Nope . Electronic sensors are regulated.



A car computer or ECU do not use direct 12V. It goes through buck conversion or down conversion.
The regulator will work all the way down to 6-7V assuming the output is 5V.
And all this design criterias like load dump, voltage fluctuations are all already taken care off by the ECU power supply unit.


Also it is CLEARLY stated in the article , that it is not caused by the 12V battery. So why are you trying so hard to try to link it back to the 12V battery again?



This post has been edited by Drian: May 27 2025, 07:16 PM

ECU and all are regulated.. the buck regulator or power supply are all designed to expect fluctuations in the 12V.
That's why when I read the AI generated answers , I already know it is rambling on something that they don't know about.

https://industrial.panasonic.com/ww/ss/technical/b13

This post has been edited by Drian: May 27 2025, 07:17 PM