Welcome to RennTech.org Community, Guest
There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.
Here are some of the features available - once you register at RennTech.org
- View Classified Ads
- DIY Tutorials
- Porsche TSB Listings (limited)
- VIN Decoder
- Special Offers
-
OBD II P-Codes - Paint Codes
- Registry
- Videos System
- View Reviews
- and get rid of this welcome message
It takes just a few minutes to register, and it's FREE
Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)
- No ads - advertisements are removed
- Access the Contributors Only Forum
- Contributing Members Only Downloads
- Send attachments with PMs
- All image/file storage limits are substantially increased for all Contributing Members
- Option Codes Lookup
- VIN Option Lookups (limited)
Halu17
-
Posts
8 -
Joined
-
Last visited
Halu17's Achievements
Member (1/1)
0
Reputation
-
Hello my solution for the issue was changing the electrical vacuum pump relay under the passenger seat on the Panamera. hope this helps. -
Have you test vacuum pump working good, vacuum Lines, vacuum presure sensor and check valves?? if there is a vacuum leak the fault code would be the same
-
Also I have notice that since I have repair the relay, and hybrid mode is back to normal, when the car is Parked for a week even when charged is plugged , 12v battery gets full consumed even if the HV battery is at 100% I have also that problem before the P0556 fault code but since I have that error no more battery problems. before, when not plugged to charger and a week parked the HV battery also get to 0% and then the 12v. On the past the Dealer make test and try to reproduce the fault and they tell all is ok and there was no problem but that is not true as both battery’s keep discharging. Anyone with same problems? Any clue??
-
for your reference the location is there:
-
I think on cayenne maybe could be different location. The relay I have changed is the atached one:
-
Hello, just update that I have find the issue on my Panamera, after testing all posible components, it was the vacuum pump relay, that is located under the passenger seat. the relay itself sems to work fine but even when activating it’s solenoid, it was no connecting correctly the positive terminal for the vacuum pump. The contact was not good, so replaced the relay and all issues have gone. hope this could help you!
-
Hello, it´s only a official Porsche PDF, please find attached the screen shot of that document, hope some one know what is happening. Any one have documentation about what the Guided Fault Finding and Diagnosis Information says about this vacuum System?
-
Hello Same problem on 2014 Panamera S Hybrid Found this tech document on internet. Any one know what to check? I think is not a good solution to change the 3 complete vacuum lines. for only a leak o problem on one specific part. As the systems detects a vacuum problem it disable the electric mode and turn on the engine to ensure the mechanical vacuum pump to work and that way preserve vacuum for the brake booster.
