Many EVs do have a 12V. I have a Hyundai Ioniq 6 and they are known to have ICCU failures which cause issues that look exactly like this.
Edit: the cyber truck apparently doesn’t have a 12V but rather a 48V system. I’m not sure if this same issue or a similar one is happening, or something else entirely.
Most electric vehicles are required by law to lug around a standard 12V battery even though it’s redundant to the 30-60kw battery pack powering th le rest of it. And they’ll typically cheap out and go with a lead acid battery. On the upside they’ll often wire the vehicle to keep the starter battery topped off so the car actually starts, so those starter batteries tend to last much longer than they do in ICE vehicles
The cybertruck is a 48v car with a lithium ion battery, not SLA. It’s not as likely to have a problem like a 12v SLA sitting too long.
It actually has 2 of them as well, altbough one is smallsr. Its a redundant back up for the steer by wire system in case 1 fails.
Many EVs do have a 12V. I have a Hyundai Ioniq 6 and they are known to have ICCU failures which cause issues that look exactly like this.
Edit: the cyber truck apparently doesn’t have a 12V but rather a 48V system. I’m not sure if this same issue or a similar one is happening, or something else entirely.
Most electric vehicles are required by law to lug around a standard 12V battery even though it’s redundant to the 30-60kw battery pack powering th le rest of it. And they’ll typically cheap out and go with a lead acid battery. On the upside they’ll often wire the vehicle to keep the starter battery topped off so the car actually starts, so those starter batteries tend to last much longer than they do in ICE vehicles
The law is probably about a 2nd battery for specific systems, not that it has to be a 12v, it’s just that up until now it’s all been 12v.