Porsche 911 GT3 R 2012 Technical Manual page 43

4.2.3. Fuel
4.2.4. Reserve pumps
4.2.5. Main and in-tank pumps
98 ROZ
DO NOT drill holes in the area of the fuel cell.
DO NOT use sharp objects when removing the fuel cell from the car.
A reserve fuel pump is fitted as standard and is activated from a switch
mounted on the dashboard. A warning lamp in the push button is
illuminated when the reserve pump is running.
The correct procedure for using the reserve pump is as follows:
A warning lamp in the shift light module and also a warning

message in the MoTec dash indicate when the minimum fuel level
is reached.
 If this warning is ignored, an engine misfire shortly after signals
low fuel.
 Now, at the very latest, must the reserve pump be switched on
so that the remaining fuel in the catch tank can be used.
A switch mounted on the dashboard can be used to switch between the
various main and in-tank pump modes:
Service: Normal operation

 Middle position: Fuel pumps off
 In-tank service: Only the in-tank pumps are in operation
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