No. 200-23

Symptom-based workshop manual
Service
200/23 ENU
1001
1
Engine Symptom - Rattling Noises at Idle Speed or at Low Load from the
Engine/Transmission Area (SY 200/23)
Vehicle Type:
911 Turbo (992) / 911 Turbo S (992)
Model Year:
As of 2020
Concerns:
Dual-mass flywheel (DMF)
Symptom:
Within the first 2,000 km (1,200 mls) to a maximum of 5,000 km (3,100 mls), there are
complaints about a disturbing rattling noise from the engine/transmission area at idle speed
or at low load.
Cause:
The damping effect of the dual-mass flywheel (DMF) only develops after a certain bedding-in period.
Within this bedding-in period, the engine excitation can cause the shadow gear wheels in the transmission
to rattle.
Action:
Ensure that the noises complained about are not caused by, e.g. loose or other components.
If the rattling noises can be clearly attributed to the transmission rattling, inform the customer that the
damping effect of the dual-mass flywheel (DMF) develops with increasing mileage/km and the rattling
noise disappears within 2,000 km (1,200 mls) to a maximum of 5,000 km (3,100 mls).
Information
Replacing the dual-mass flywheel (DMF) does not correct the problem in this complaint and does not
provide any remedy.
If the Porsche Center believes a component replacement still necessary, the importer must first approve
this via PRMS.
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.
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AfterSales
Jan 4, 2024
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