2012 911 Section 3-1 11/3/11 10:18 AM Page 102
911 Carrera 911 Carrera S
A Check valve
3
The 911 Carrera vehicles as of model year 2012 feature an Auto Start Stop system. There is an additional check valve installed in the hydraulic control unit so that the clutches and oil supply ducts do not drain when the engine is switched off.
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Check valve
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! Due to the modification of the additional
The "Quickstart" function supplies hydraulic pressure oil to the clutches while the
shut-off the hydraulic control unit must
engine is starting so that the power transmission can be established without delay
on no account be replaced with one
when the engine is restarting.
without check valve (or vice versa).
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Power Transmission
3c.4 Auto Start Stop system
