2020 Taycan water in battery area & inside car

[Scandinavian]

Your dealer gave you wrong information. the battery cover under the car must be resealed with a new adhesive Porsche recently released . In addition the plastic inside each drain cover must be removed per the service bulletin this is causing the plugs to clog. If the dealer does not completely reseal the battery cover then the problem will continue with water going under drivers seat and read seat. now for some more bad news.there is an additional service bulletin out regarding the AC pressure sensors and (campaign 268TU)and thermal management control system you need dealer to perform or you soon will lose your AC and battery could overheat. In addition 2020 Taycan's need to have the high voltage heater replaced since Porsche announced they are defective and failing after 3 years If the dealer performs a thermal management test it will show the heater etc passing . But in fact both the sensors and heater are defective and should be replaced. You can search this forum for more info re campaigns. You should find another dealer who better understands how to fix the issues

My problem just now is though that I do not feel any water in the foot garage in the rear. It is the front seat passenger floor mat that is soaking wet. I have heard about the reseal of the battery as well and will ask again. But just now I am leaning towards the problem coming from the front and from an elevated position. I have my suspicion on the ventilation air intake and will take out the air filter later to check.

And I hope I am on safe grounds with my heater now since I am on my third heater and the last one is only 3 weeks old! So should be of the new production run, with recall SW also performed. But I have believed in things earlier, so only time will tell.

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[800v]

Well the service bulletin worked wonders. Below a picture of the flow of water after I managed to loosen the drain halfway. This was after about 5 minutes of flow and it kept going. That drain plug was quite full of dirt.

well worth doing , getting done, because there was quite an amount of water in there!

easy to do as well.

I would like to do this as well. How did you get the seal out? Wiggle by hand or a tool? Thanks!

 

[Scandinavian]

I would like to do this as well. How did you get the seal out? Wiggle by hand or a tool? Thanks!

I just used a flat screw driver to carefully release the holder from the car. I used a car jack to just lift the car a bit and then got easy access to see and work on it.

Then I just followed the link that was provided in an earlier post.
https://static.nhtsa.gov/odi/tsbs/2021/MC-10191715-0001.pdf

Good Luck.

 

[Scotty]

I would like to do this as well. How did you get the seal out? Wiggle by hand or a tool? Thanks!
[/https://static.nhtsa.gov/odi/tsbs/2021/MC-10191715-0001.pdf
see this service bulletin how to remove the drain seal. My dealer removed it when they repaired my car. For futher info see my post Water under drivers seat. Porsche already stated the drains are defective but they don’t have replacement drains developed at this time. The fix is remove the seal and use Porsche‘s new adhesive to seal battery compartment.

My problem just now is though that I do not feel any water in the foot garage in the rear. It is the front seat passenger floor mat that is soaking wet. I have heard about the reseal of the battery as well and will ask again. But just now I am leaning towards the problem coming from the front and from an elevated position. I have my suspicion on the ventilation air intake and will take out the air filter later to check.

And I hope I am on safe grounds with my heater now since I am on my third heater and the last one is only 3 weeks old! So should be of the new production run, with recall SW also performed. But I have believed in things earlier, so only time will tell.

Water is not coming thru the ventilation air intake or the filter. My dealer did several tests( inundating car with water) and confirmed all the water that enters under driver seat and rear seat well behind driver seat comes in from the drain that is under the driver’s seat in the battery compartment. Older models of Taycan have 2 drains newer ones have 4 but all have issues with the drain seal and compartment adhesive.

I just used a flat screw driver to carefully release the holder from the car. I used a car jack to just lift the car a bit and then got easy access to see and work on it.

Then I just followed the link that was provided in an earlier post.
https://static.nhtsa.gov/odi/tsbs/2021/MC-10191715-0001.pdf

Good Luck.

very smart how you fixed it!

 

[Scandinavian]

The water is definitely not coming in through the ventilation. All of that is bone dry. So as stated by @Scotty , it comes from the top somewhere. Unbelievable that a 150 k car is not water tight. Very surprised that similar problems occur in Cayenne and Panamera as well.

 

[Scandinavian]

Further update on the persistent water leak.

We had prepared for a long European trip, from South of France to the U.K. and then onwards towards Sweden and perhaps the Atlantic road in Norway.
https://www.visitnorway.com/places-...wegian-scenic-routes-the-atlantic-road/11862/

The routes had all been planned by ABRP and since Ionity have opened a lot of new charging stations, we wanted to test some of them. We knew there is no problem at all with Ionity staions with regard to range on route. But the new ones and some Tesla V4 stations needed to be included. Preparation done.

A week before departure we had another Mediterranean event with heavy rainfall. And my car was once again full of water. This is despite removing the valves under the battery and two visits to Porsche to clean and inspect all the drains. Change of plans and another car for the trip. The Taycan was agreed to be sent down to Porsche during our time away for a full investigation. The dealer and service team have been very helpful and they now wanted help from Porsche to check. They had never disassembled a Taycan as deeply in the front as was now required.

The result is just in!
The leak was found as a gap between the cabin heater unit (not the famous heater element) and the chassis! !! Either a manufacturing fault or some seals missing??? They have replaced all the front and rear carpet and isolation material and properly dried out the area.

I knew Porsche have been abysmal at designing software, but for heavens sake they have done mechanical engineering for more than 75 years! That is a big disappointment for me that such a simple engineering task was incorrect!

My car seems to have been a typical Monday morning build after a heavy week end!

 

[ciaranob]

Further update on the persistent water leak.

We had prepared for a long European trip, from South of France to the U.K. and then onwards towards Sweden and perhaps the Atlantic road in Norway.
https://www.visitnorway.com/places-...wegian-scenic-routes-the-atlantic-road/11862/

The routes had all been planned by ABRP and since Ionity have opened a lot of new charging stations, we wanted to test some of them. We knew there is no problem at all with Ionity staions with regard to range on route. But the new ones and some Tesla V4 stations needed to be included. Preparation done.

A week before departure we had another Mediterranean event with heavy rainfall. And my car was once again full of water. This is despite removing the valves under the battery and two visits to Porsche to clean and inspect all the drains. Change of plans and another car for the trip. The Taycan was agreed to be sent down to Porsche during our time away for a full investigation. The dealer and service team have been very helpful and they now wanted help from Porsche to check. They had never disassembled a Taycan as deeply in the front as was now required.

The result is just in!
The leak was found as a gap between the cabin heater unit (not the famous heater element) and the chassis! !! Either a manufacturing fault or some seals missing??? They have replaced all the front and rear carpet and isolation material and properly dried out the area.

I knew Porsche have been abysmal at designing software, but for heavens sake they have done mechanical engineering for more than 75 years! That is a big disappointment for me that such a simple engineering task was incorrect!

My car seems to have been a typical Monday morning build after a heavy week end!

#1 - AT LAST the issue discovered and fixed

BUT just a really dismal experience from such a top end brand - truly unreal but I guess a classic ‘near-lemon’ experience with battery, heater and flooding!

Given your total experience, I actually do not think that the idea of Porsche really stepping up and fully replacing your vehicle if solely from a smart marketing perspective is not out of bounds (regardless of any precedent set)!

Glad at least that the blasted thing is now (apparently) put right!

 

[Scandinavian]

#1 - AT LAST the issue discovered and fixed

BUT just a really dismal experience from such a top end brand - truly unreal but I guess a classic ‘near-lemon’ experience with battery, heater and flooding!

Given your total experience, I actually do not think that the idea of Porsche really stepping up and fully replacing your vehicle if solely from a smart marketing perspective is not out of bounds (regardless of any precedent set)!

Glad at least that the blasted thing is now (apparently) put right!

I actually only have the service managers report that it is fixed. We could not use the Taycan and made the trip in a BMW M5 instead. Very interesting comparison on a trip summary. Same routes as previously with the Taycan to 90%.

 

[Tooney]

You have had more than your fair share of Taycan problems. I hope things improve.

 

[Scandinavian]

Final update on my water leak!
I picked up my car today from Porsche service centre. I left my car at Porsche for the repair during our trip which lasted 6weeks. Happy to be reunited with the Taycan now.

The investigation has been very thorough. They have had to strip Down the car almost completely in the front. Front bumper, both side wings and a lot under the bonnet. The problem has been the heater/ ventilation unit fixing to the main passenger compartment. There was a serious gap between the body and the unit. Most likely a manufacturing problem that has develop a separation between the units when we used the car.

The service advisor said the overall time for repair, including calibration of all sensors, exceeded 50 hours work. Luckily enough I have the Porsche extended warranty that has covered all the costs. I guess the cost for labour alone would have been more than 7,500 Euros!!!

First generations of cars do have a lot of issues, but I hope I have had them all by now.

 

[WAporsche]

Sorry to bump this thread but I just had this same issue come up…
Not sure what to do… Would the dealership cover anything or would all the expenses fall out of pocket?
I pulled the drain plugs below the car, they were a bit dirty but it was just below freezing and the water turned to ice.
Also something to note, the 12V is dead and I can’t start the car..
Can anyone help?

 

[PNWTaycan4S]

I had the "water in the passenger footwell" issue a couple of years ago. It was the battery drains per the service bulletin as Robert pointed out. https://static.nhtsa.gov/odi/tsbs/2021/MC-10191715-0001.pdf

The dealer removed the back seats and carpet to get everything dried out, including the foam under the carpet. Pulled the battery to do the reseal and removed the membranes in the plugs. In on a Saturday and done the following Friday.

I've not had any water intrusion issues since.

Covered under warranty in USA if still in effect.

 

[Deleted member 2620]

I am having exactly the same issue with my 2020 Turbo (sent service manager this thread) at Redwood City Porsche - I have Porsche Platinum extended warranty - apparently they denied claim (for $10k ish!) trying to get this escalated to Porsche North America - ridiculous. I have always taken my Porsches to them for service (bought the Taycan from them) inc GT3, Carrera and this Taycan - am really shocked at this - my car was also one of the ones that *died* on the freeway and was reported to NHTSA. At this point am beyond livid with them.

 

[WAporsche]

Covered under warranty in USA if still in effect.

Which dealership in the PNW would you try to work with?
I live close to the Larson/Fife location but can make it up to Bellevue if anything.

 

[PNWTaycan4S]

I worked with Porsche Bellevue.

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