Porsche 911 Carrera Owner's Manual page 200

Tow-starting, towing
Please observe the chapter "TOWING" on page
321.
Reduced driving program
A transmission fault is indicated by the following
symptoms:
– The 4th gear display on the instrument cluster
flashes.
– The warning "Tiptronic emergency run"
appears on the on-board computer.
– The transmission no longer shifts.
Warning!
Reverse gear lock monitoring is disabled in
the emergency running program. Damage
to the vehicle may result as well as loss of
control, if the vehicle is moving forward fast
enough to cause rear wheel lockup.
Do not shift into R while the vehicle is moving
forward.
Proceed as follows in the event of a transmission
fault:
1. Stop in a safe place.
2. Move selector lever to position P, switch the
ignition off and wait for 10 seconds.
198
Shifting Gears
3. Start the engine. 2nd gear in selector position
D and reverse gear R are now available.
4. Have the fault seen to immediately at an
authorized Porsche dealer.