Dreaded Red Electrical System Error & Poll

[Tooney]

My 2020 4S just went in last week, April 24th. 20k miles. I tried to start the car in the morning on got the red error. They diagnosed it and they said the E-box needs to be replaced. They said the battery cells look okay. Parts are supposed to arrive this week, but they don't have a tech to do the install as there are 2 Taycans in front of mine. The advisor said to expect 3-4 weeks.

A year ago, Porsche issued a TSB which indicated that E-box should not be replaced by itself, it should be replaced with the HV battery. You may want to ask your dealer about the TSB.
https://static.nhtsa.gov/odi/tsbs/2023/MC-10233932-0001.pdf

Photo of E-box: https://www.taycanforum.com/forum/threads/wont-start.15674/page-2#post-243315

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[sun]

A year ago, Porsche issued a TSB which indicated that E-box should not be replaced by itself, it should be replaced with the HV battery. You may want to ask your dealer about the TSB.
https://static.nhtsa.gov/odi/tsbs/2023/MC-10233932-0001.pdf

Photo of E-box: https://www.taycanforum.com/forum/threads/wont-start.15674/page-2#post-243315

Thank you! I just send this over to my service advisor. I'd like to avoid having them replace just the e-box and then have to have the battery changed soon after. I'm already going to be without my car for 3-4 weeks.

 

[sun]

Thank you! I just send this over to my service advisor. I'd like to avoid having them replace just the e-box and then have to have the battery changed soon after. I'm already going to be without my car for 3-4 weeks.

The service advisor responded that the Tech said Porsche is giving them instructions to only replace the e-box. It seems as though it's a bit risky based on the guidance from the PDF, but there isn't much else I can do here.

 

[jld1]

Wondering if anyone else had to wait for a "battery cover " to be custom made? Apparently they're waiting on this part now, but the cells are in. How ridiculous, they don't have that part already in stock? After that, they have to book the ONE guy which they said may take another 1-2 weeks.

 

[Tooney]

The service advisor responded that the Tech said Porsche is giving them instructions to only replace the e-box. It seems as though it's a bit risky based on the guidance from the PDF, but there isn't much else I can do here.

The E-box has a removable module/circuit board/ecu. Another owner on the forum did have that module replaced to remedy HV battery problem. Maybe the module on the E-box is what they plan to replace.

 

[Buckeye]

Well after 3 months to the day my Taycan Turbo is back. They replaced three cells. I pushed for new battery but was told they have no concerns once these three batteries are replaced. Fingers crossed

 

[Caraholic]

Glad you got it back

 

[Buckeye]

Glad you got it back

Thanks, like I said, fingers crossed. Love the Taycan but these battery issues are very concerning

 

[electricsidecar]

Updated the tracker, we're now at 39 failures tracked: https://github.com/ElectricSidecar/Porsche-Taycan/issues/15

 

[JWreck]

For those that have had modules replaced that were experiencing a range drop, how long did it take for your range estimator to balance out? Ours is still showing significantly reduced range but hasn’t been but a week or so.

 

[Caraholic]

Mine showed 280 when I got it back from the dealer. It’s back down to 220 now

 

[Scandinavian]

Mine showed 280 when I got it back from the dealer. It’s back down to 220 now

Mine is about the same. It showed a substantial increase in range in the beginning, but now 6 8 months later, is back at the same range as before the problem.

 

[JWreck]

Mine showed 280 when I got it back from the dealer. It’s back down to 220 now

280? Miles? 🫠 Mine sat around 205ish miles at 85% before the issues happened, and it’s currently sitting at 185 miles after the cell module replacement. 4S CT

ETA: the 20 miles makes a difference - many of the hill country drives out here in fast charging wasteland are around 230ish miles so having some buffer is the difference between me enjoying the car or it sitting on the weekends

 

[PNWTaycan4S]

280? Miles? 🫠 Mine sat around 205ish miles at 85% before the issues happened, and it’s currently sitting at 185 miles after the cell module replacement. 4S CT

ETA: the 20 miles makes a difference - many of the hill country drives out here in fast charging wasteland are around 230ish miles so having some buffer is the difference between me enjoying the car or it sitting on the weekends

My 4S Performance showed 275 after the new battery and now, in range mode in a warm May, shows 252.

 

[JWreck]

280? Miles? 🫠 Mine sat around 205ish miles at 85% before the issues happened, and it’s currently sitting at 185 miles after the cell module replacement. 4S CT

My 4S Performance showed 275 after the new battery and now, in range mode in a warm May, shows 252.

At 100%?

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