openinverter forum

Hi,
I'm trying to get the VCU to work with the Tesla OBC. I followed the instructions in the wiki for detecting the charging plug. Unfortunately, it doesn't work with the Tesla settings for charging mode. Only the Outlander setting works, and it also sees the values ​​in the plot and switches to charging mode. Am I doing something wrong here, or does it still need to be programmed for Tesla AC chargers?

No this has been mentioned a few times on the forum.

Zombieverter does not interact with the Tesla charger indepth right now.

You will have to use 12V HV request signal into zombie to get it to close contactors to allow charging.

I believe some people are working on trying to resolve this.https://github.com/daan0308/Stm32-vcu/t ... harger-fix

Unfortunately, I can't imagine how to get the charger to start charging. I thought the proxpilot signal detects that a charging cable is connected and then simply closes the contactors and starts the respective charger.

wire up the charger alone to the charge port.

Here is someone working through getting their charger working viewtopic.php?t=6423&start=50

Yes, charging works. My only problem is that I always have to turn the ignition key to the ignition on first so that the relays close and the charger is supplied with 12V and the pumps start. But I can't do that at public chargers, otherwise the car is gone. I would like to simply lock the car and plug in the charger. The VCU should then control the pumps and start the charging process.

Edit:
I think I made a mistake. I have the 12V (B1 pin) on the ignition, and I read that it needs to be permanently supplied with 12V. Now the question is, which signal do I send from the charger to where on the VCU so that it goes into charging mode?

tom91 wrote: ↑Sat Oct 25, 2025 6:01 pm You will have to use 12V HV request signal into zombie to get it to close contactors to allow charging.

From charger its a grounding output, so you need a relay to change it to 12.

Yes, I've already read that in the wiki, but what do I set in the VCU so that it goes into charging mode is that right?

What software version are you on?

Main branch currently this pin function is not working. In vehicle testing banch: HVrequest just has it enable contactors for charging. No need for other settings.

Edit: Checked, you need to set charger to ext digital

Thank you very much, everything works on the desk, let's see how it looks in the car tomorrow

Hi, there's some news. Unfortunately, it's not working as expected. When I plug in the charging cable, nothing happens. A1 doesn't connect to GND. In the settings for A3, I set the input to High. However, if I set the settings to Low, the Zombie turns on the pumps and the relays close as soon as the charging cable is connected. Perhaps I'm misunderstanding something. Shouldn't it be the case that when the charging cable is plugged in, A1 connects to GND, and this signal supplies the 12V to the Zombie via a relay to enter charge mode, and then outputs the activation signal for the charger as feedback?
I'm using charger version 1.19R.

You had the charger working standalone before?

A6 is HV enable from charger, this goes to ground when it wants HV input. Use this to control the HV request relay for Zombie.

Yes, it worked standalone, but I don't have any HV battery connected at the moment and the IVT shunt is missing, could that be the problem?

No idea what you are doing, this sounds like you are not doing it correctly.

You have the zombie working and turning on contactors right? That will supply the HV to the charger.

The charger will provide a grounding signal on pin A6 HV enable when it wants the HV during the charging process. Ofcourse the charger needs to have pin A3 Enable tied to 12V at all times to allow charging.

Oh, so pins A3 and B1 are also permanently connected to 12V. I thought the Zombie would then send the enable signal to pin A3.

Yes, Zombie works as it should; it turns on the contactors and water pumps as soon as it goes into operation or charging mode.