just picked up my 2014 991 4000 klm NO HEAT back to dealer apparently common issue replaced solenoid 2 hour job

 

And silly us thought that they had finally fixed this pathetic problem with the (known) defective valves.
Insist that they change ALL of them.

 

Dux all of them? like the 7-8 valves, not sure how many , did your stealer replaced them?

 

really

 

Insist all you want but unless you have a much much better relationship with your SD guys than nearly everyone on the board I seriously doubt you would get them all replaced at same time, without failures. See many other threads on this board for Change-Over-Valves and some very detailed explanation of what systems they support. Some are easier for the tech to change-out than others, and at any rate the dealer would have to be willing to eat the cost of the job with risk of Porsche NA/AG not reimbursing them (without failure).
Honestly though- how many different types of COV failures have we seen? No heat, Exhaust Valves are by far the dominant percentage of reported failures.
Not saying this shouldn't be addressed by Porsche- but every time this topic comes up we get guys claiming we should protest and demand, etc. Reality is that isn't likely to happen. So either you suck it up and deal with the occasional hassle, or you pony-up your own $$$ to replace all of the COVs from your own pocket - like I think a couple members have done. But even then, if I recall, this doesn't mean you won't have the problem again! We've seen multiple revs of the same part and still hear of failures.
Anyway, have to chuckle when I read stuff like that. Too bad for us.
To the OP- get the dealer to fix, and enjoy the car. If it turns out to be something other than COV please do post what the root cause was for others to learn from.
Happy Holidays!

 

yeah they also reinstalled the spoiler tail lites at same time whats relation to this issue

 

It had to be removed to access the COV controlling the heat.

Frank C.

 

thanks glad i am not a tech have to say this 911 forum beats planet 9 those members are not very nice

 

I had the change over valve problem with the exhaust and the no heating. 2 valve replaced but as above, dealer refused to replace the rest unless they go faulty.

My main issue with this is that the exhaust and heating are the 2 noticeable problems. If the other change-over-valves malfunction we may well notice nothing untill a bigger problem arise. The exhaust and heating certainly did NOT throw any fault code.

 

Porsche needs to do what BMW Motarrad did concerning known defective/substandard parts on it's motorcycles. BMW recently acknowledged that the fuel quantity sensor (strip) installed in some of it's bikes over the last 9 years was a total piece of crap. They recently agreed to warranty the defective part for 12 years without mileage limitations as determined from the original in service date. In addition, they will reimburse owners who paid out of pocket for repairs and/or replacement. Not sure if this was done out of the kindness of their heart, or whether due to potential regulatory actions. (I tend to agree with the later).

It's time for Porsche to do the right thing concerning these changeover valves.

 

I had it replaced twice in 2 years... I think this will require a replacement again next fall....

 

Porsche just pockets the high profit on the 911 and leaves you with Chevy service....
I do wonder what symptoms a failure of the other valves would cause.

 

Here you go:

Frank C.

 

I had the same problem. Dealer changed it within 10-15 minutes under warranty.

 

Porsche replaced 7 change over valves on my 2012.5 991C2S (built Jan 2012) about 4 months after i bought the car (March 2012) in one of many factory campaigns. I had no symptoms then and have had no problems after almost 3 years/25k miles.