Hi,
Based on my knowledge, level 1 or 2 charging is more complicated because AC should be converted to DC. However, level 3 charging is just using DC to charge the battery.
Somehow my car does not work at the level 3 charging system. (So I towed to a dealership and they told me) level 1 charging is working (and then told me to bring it back).
(who charges at 1~2 kW…)
Is it technically possible for Level 3 charging to fail to work, but Level 1 charging will work?
There’s a bunch of communication that needs to happen before DC (or even AC) charging starts. The pins in your charge port aren’t under power by default (neither are the pins in the respective plugs). If that communication fails - for whatever reason - the switches that make that connection don’t close.