I need advice to repair my car

[MarsIscharging1]

Hello, everyone! I really need your help with my car.
I haven't driven it for almost two months. I wanted to charge it at home, but it stopped charging after less than two hours. Plus, the dashboard started showing some indicators. I thought something wrong was with my charger, so I went to a lvl2 charger. Still no results.
I had to call for a towing service so I could get it to the closest dealership. The mechanic there said the onboard charger might be the issue. I had to replace a part. I asked for the part number, but he gave me the wrong number...
This is my first electric car, so I still have some issues trying to figure out when it comes to troubleshooting and maintenance. I found out about DIY reset methods I want to try before going all in with the repairs. The problem is my car is still at the dealership, and I don't have any more AAA towing miles. So, I have to be efficient with my next moves.
Thereafter, this is how I need your help:
1. Should I attempt to fix the car myself?
2. If yes, what tools do I need?
3. Do you know a trustworthy mechanic familiar with electric cars?

I would appreciate your help.

 

[False_Dragon]

I've heard that the battery can lose about 15% per month, and if it gets too low, it won't start or charge. You're two months in so you do the math. To prevent this, you should remove the HV fuse while the car is being repaired. It's best to put the car into sleep mode first, then disconnect the 12V negative, and finally remove the HV fuse.
If you're leaving the car with someone else, I'd recommend removing the bigger nut on the negative clamp and unclipping the sensor. That way, you can take the clamp and HV fuse home with you, making it harder for them to reconnect it. Let me know if that works. If the issue is the onboard charger, then you have to find out what that part number is. Do you still have the manual?

 

[AndroSport]

So since this is your first EV, I'd say don’t try fixing it yourself just yet. You mentioned you're still figuring out troubleshooting and maintenance stuff, and trust me, there’s a ton of tech in these electric rides! Better to let a pro handle it for now! Once you get the hang of everything, you can tackle the DIY repairs yourself.

 

[MarsIscharging1]

I've heard that the battery can lose about 15% per month, and if it gets too low, it won't start or charge. You're two months in so you do the math. To prevent this, you should remove the HV fuse while the car is being repaired. It's best to put the car into sleep mode first, then disconnect the 12V negative, and finally remove the HV fuse.
If you're leaving the car with someone else, I'd recommend removing the bigger nut on the negative clamp and unclipping the sensor. That way, you can take the clamp and HV fuse home with you, making it harder for them to reconnect it. Let me know if that works. If the issue is the onboard charger, then you have to find out what that part number is. Do you still have the manual?

Oh, wow! That is a lot. I didn't realize. I will see if removing the HV fuse and disconnecting the battery helps. Hopefully, no more issues. I guess I have to find the number part myself (yes, I have the manual).

 

[MarsIscharging1]

@AndroSport, yes, with this experience I realized EVs are complex. And you are right, maybe I should gain some experience first with the car, and once I feel more confident, I will try some of the DIY repairs myself. Thanks!