No. 2124-2

Bulletin #: 2124
Advanced Technical Information
Part ID: 9152
9
9YA PCM Display Intermittently Turns Red and Will Not Respond
Vehicles Affected
Models
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Cayenne
2021
9YA
N/A
N/A
Revision History
Revision
Release Date
Changes
0
October 29, 2021
Original document
Condition
The customer reports the PCM displays a completely red screen. The screen is also unresponsive.
Figure 1
Technical Background
The reason for this failure is not always clear. In most cases by far, this issue is isolated and rare. Additionally, this red
screen is temporary, healing itself after a short time. The PCM does not lose service in a persistent way.
A replacement central computer does not fix the issue when it is temporary or rare.
AfterSales
Oct 29, 2021
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Bulletin #: 2124
Advanced Technical Information
Part ID: 9152
9
Service Information
If the technician cannot replicate the issue at the workshop, no repair is necessary. Where no repair is necessary, 		
kindly explain to the customer that this issue is not critical or indicative of a larger PCM problem..
Search Items
Red screen, PCM5
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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