Why does the car sometimes not respond when starting, even though the battery and dashboard lights are normal?

Why is there a beeping sound 3 times in a row while driving, even though everything on the dashboard appears normal?

Why is the dashboard still showing "add windshield washer fluid" even though I've filled it up and it's spraying normally? Any suggestions?

Even with power in the battery, my Jinxuan manual sometimes doesn't respond when starting. After turning it on and off a few times, it starts. Does anyone know what might be causing this?

When starting the car, the battery has power but the engine doesn't respond.

Why does the car sometimes not respond when starting, even though the battery and dashboard lights are normal?

Anyone knows why the 3008 shows the door is open on the dashboard even though it's closed?

When braking, does this taillight light up? After the dashboard is powered on, all the fault codes light up, but they all disappear once the engine starts. Is this situation normal?

The battery couldn't start the car after 3.5 years and needed replacement, even though the auto start-stop feature was mostly off. Fellow car enthusiasts, when did you replace your battery for the first time?

The engine won't start, and the EPC, battery, and engine fault lights on the dashboard are all on. What could be the reason?

Is it a problem with the ignition switch if the Volvo S40 key is turned to the second position, but there's no power and it reports an engine anti-theft system fault? I changed the ignition switch, and now it's sometimes good and sometimes bad. Sometimes the dashboard lights up, sometimes it doesn't, and sometimes it even starts automatically.