Fixing Porsche Ventilation
This bulletin applies to 2012-2017 Porsche Boxster, 911 and Cayman vehicles. The heating/ventilation fan may not function. If air humidity is high, the fan may no longer start up automatically because of deposits if the vehicle has been parked for several days.
Break the fan wheel loose manually and then leave the fan motor running at maximum speed for several minutes.
Details are as follows:
Connect a battery charger with a current rating of at least 70 amps.
Switch the ignition on using the original driver’s key. On vehicles with “Porsche Entry & Drive,” do this by replacing the dummy key in the ignition lock with the original driver’s key if necessary.
PIWIS Tester 3 9900 with software version 35.600 or higher must be connected to the vehicle communication module (VCI) via the USB cable. Then connect the communication module to the vehicle and switch on the PIWIS tester.
On the tester start screen, call up the Diagnostics menu. The diagnostic application is then started and the control unit screen is populated.
Move the fan wheel for fresh air fab manually. Lift up the cover on the air intake pre-filter until you can reach the fan wheel with your hand. Move the fan wheel manually. If stuck, break it loose with your hand.
Activate the “Fresh-air fan” drive link manually. Erase all fault memories. Switch off the ignition and disconnect the PIWIS tester. Switch off and disconnect the battery charger.
About the Author
Mike MavrigianMike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
