Loss of ability to adapt target voltage for alternator 2022 Tiguan

[MattR72]

I sent an email to support

 

[Uwe]

does vcds delete prior scans from prior versions (When a new version is released)?

No, it does not delete prior scans. See your Logs and Scans sub-folders.

-Uwe-

 

[MattR72]

No, it does not delete prior scans. See your Logs and Scans sub-folders.

-Uwe-

I do not see any successful attempts to modify the IDE01860 file. Most likey the voltage change must have been when I changed the battery type/chemistry.

 

[Sebastian]

Let's roll this all the way back to beginning. First of all, IMO that channel was never your way to reach your goal and the whole back and forth here, was IMO fully off the rails because of a general misunderstanding what this channel is used for. Since LTO batteries are generally not supported by VW, the best you might be able to do is use the LiFePO4 settings, but even those were never in production use with these battery management system - so after switching to those settings, it is highly recommended to actually monitor the voltages etc.

Generally, your best bet in such unsupported (by the vehicle manufacturer) scenarios is to use a battery charge booster like the Victron Orion-Tr Smart DC-DC series.

 

[MattR72]

In my case that would be a complete rewire of the cars power distribution due to the complexity of system design. If I was to run a DC-DC converter most aren't able to handle the 250A or more Alternator that would be involved in that conversion. As I would switch from S5 configuration to an S6 system that would require a charge voltage between 16v and 16.2v. Then the DC-DC converter is required to step down the voltage from 16.2v to 14.4v. For standard operation.

When you have a S5 system like XS power delivers. That is 10ah 30C Charge/Discharge continuous and 100C Charge/Discharge burst. The need for a DC/DC converter or buck converter becomes less needed.

I do not like that the original manufactures of vehicles (VAG, GM, Ford). Have made the complexity of the charging system so much more difficult to ingrate to... Switching to a PCM/ECU design give better results however it makes trouble shooting more difficult. This gets down the rabbit hole of why I don't want to buy an EV or Hybrid. The right to repair is virtually nonexistent. And that is in my opinion what VW is trying to go after. By not providing support to you in telling you what the specific IDE codes mean or due and other similar information that isn't clearly published in the manual that comes from VW.

 

[Sebastian]

I very much disagree with your assessment. You are not asking for assistance in a "right to repair" context, but you are trying to modify a product beyond it's original spec. That is a fundamental difference and no, the specific ADP channel which started this is not relevant in a repair context. So why would it require documentation/publication? Would it be nice to have access to all development documentation and decision trees? Sure. But neither of those are mandatory for a repair in this general context.

 

[MattR72]

It's more about the information that has to do with the right to repair. And you are welcome to your opinion.

Changing battery type is my choice. And it's still conforming to the safety laws and actually improving the fuel economy vs a modification like diesel gate that volkswagen has already done.

 

[MattR72]

And Dieselgate is what is causing me to ask more questions about the programming.