Electrical System Error message

[lcarron]

After this message, did you get your battery replaced/repaired or not?
Electrical system error message - Service Necessary or Park your vehicle in a safe place.

I'm trying to figure out what Porsche usually does after those two messages.

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[Tooney]

After this message, did you get your battery replaced/repaired or not?
Electrical system error message - Service Necessary or Park your vehicle in a safe place

Why?

 

[DerekS]

Your poll is flawed; in my case I had yellow when charging that turned into red, replaced the heater, replaced the "HV Isolator" aka "E-Box."

 

[lcarron]

Your poll is flawed; in my case I had yellow when charging that turned into red, replaced the heater, replaced the "HV Isolator" aka "E-Box."

This is the best I can do with this single poll query system
Then in your case, this is Yellow, Red, heater, and others. I know this is not the best.

I want to know if the yellow message is going to get worse.

 

[DerekS]

I want to know if the yellow message is going to get worse.

It did for me.

 

[prj]

This message is a "check engine" light. It has hundreds of possibilities that set it off, and you're not going to ever know what's wrong with the car by looking at it.

If you want to know what it is, then use the free MapEV Diag to pull the codes and see.

 

[lcarron]

Yes I did it. Error
Cell module 28 self-discharge detected.
I cleared the error too.

 

[DerekS]

Yes I did it. Error
Cell module 28 self-discharge detected.
I cleared the error too.

That seems…bad.

 

[whitex]

Red message. car would not shift to Drive. Couple of hours later, all better. Dealer service said they found the faults in ECU history, but nothing actionable. I suspect DC-2-DC converter, but Porsche will no touch it until it dies for good.

 

[prj]

Yes I did it. Error
Cell module 28 self-discharge detected.
I cleared the error too.

Not the best idea to clear it, you most likely need module replacement under warranty and it would have been useful to have that fault present.

 

[Bennachie]

Neither yellow nor red but heater(s) and OBC replaced. Terms of your poll need to be revisited.

 

[whitex]

Yea, near impossible to clearly read the results of this poll. Probably needed all combinations listed individually, or perhaps 2 polls, one with "I got a yellow electrical error" and the other "I got the red electrical error", then under each have a list of "actions resulting from said error".

 

[Djay73]

I had yellow ring that turned out to be a faulty rear spoiler control unit. 2 months after that got a red one that needed 12 cells replaced and then was told the whole thing needs to be replaced. 2 months in and I'm still waiting. When I got the red ring, they had to put dollies under the tires to roll it out of my garage.

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