Saturn 2007 AURA Green Line Hybrid Owner's Manual page 121

Leaving Your Vehicle With the Engine
Running
CAUTION:
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It can be dangerous to leave your vehicle
with the engine running. Your vehicle
could move suddenly if the shift lever is
not fully in PARK (P) with the parking
brake firmly set. And, if you leave the
vehicle with the engine running, it could
overheat and even catch fire. You or
others could be injured. Do not leave your
vehicle with the engine running.
If you have to leave your vehicle with the engine
running, be sure your vehicle is in PARK (P)
and the parking brake is firmly set before leaving
it. After moving the shift lever into PARK (P),
hold the regular brake pedal down. Then, see if
you can move the shift lever away from PARK (P)
without first pushing the shift lever button.
If you can, it means that the shift lever was not
fully locked in PARK (P).
Torque Lock
If you are parking on a hill and you do not shift the
transaxle into PARK (P) properly, the weight of
the vehicle can put too much force on the parking
pawl in the transaxle. It could be difficult to pull
the shift lever out of PARK (P). This is called
"torque lock." To prevent torque lock, set
the parking brake and then shift into PARK (P)
properly before you leave the driver's seat. To find
out how, see Shifting Into PARK (P) on page 120.
When you are ready to drive, move the shift
lever out of PARK (P) before you release the
parking brake.
If torque lock does occur, you might need to have
another vehicle push your vehicle a little uphill
to take some of the pressure from the parking pawl
in the transaxle, this should let you pull the shift
lever out of PARK (P).
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