No. 08-24
Service Bulletin Details
Public Details for: No. 08-24
Technical information for wra8 - reprogramming control unit for chassis control
- 2024 -
Models from 2024
2024 PORSCHE CAYENNE |
2024 PORSCHE CAYENNE COUPE |
Service Technical Information 08/24 ENU WRA8 4 WRA8 - Re-Programming Control Unit for Chassis Control (PASM) (Workshop Campaign) Important: CRITICAL WARNING - This campaign includes steps where control unit(s) in the vehicle will be programmed with the PIWIS Tester. The vehicle voltage must be maintained between 13.5 volts and 14.5 volts during this programming. Failure to maintain this voltage could result in damaged control unit(s). Damage caused by inadequate voltage during programming is not a warrantable defect. The technician must verify the actual vehicle voltage in the PIWIS Tester before starting the campaign and also document the actual voltage on the repair order. Model Year: As of 2024 up to 2025 Model Line: Cayenne (9YA / 9YB) Concerns: Control unit for chassis control (PASM) Cause: Due to a software error in the control unit for chassis control, it is possible that the start routine of the control unit will not be completed when the ignition is switched on. As a result, communication with the control unit for chassis control is disrupted until the ignition is switched off and on again. The control unit cannot then be accessed for diagnosis either. Action: Re-program the control unit for chassis control (PASM) with the latest PIWIS Tester software release. Minimum requirement: Release 42.500.000 Affected Vehicles: Only vehicles assigned to the campaign (see also PCSS Vehicle Information). Required tools Tools: • • Battery charger with a current rating of at least 90 A, e.g., VAS 5908 - battery charger 90 A P90999 - PIWIS Tester 4 Re-programming control unit for chassis control (PASM) Work Procedure: 1 The prerequisites for control unit programming are described in the Workshop Manual Workshop Manual '9X00IN Basic Instructions and Procedure for Control Unit Programming Using the PIWIS Tester'. 2 After the backup documentation process, the integration test is started automatically. The result must first be ignored. 3 Re-program the control unit for chassis control (PASM). AfterSales Apr 8, 2024 Page 1 of 3 4 Service WRA8 ENU Technical Information 08/24 Required PIWIS Tester software release: 42.500.000 (or higher) Type of control unit programming: Control unit programming using the “Automatic programming” function of the control unit for chassis control (PASM). Programming sequence: Read and follow the information and instructions on the PIWIS Tester during the guided programming sequence. Do not interrupt programming and coding. A backup documentation process for the re-programmed software releases starts as soon as programming and coding is complete. 4 Programming time (up to): 8 minutes Procedure in the event of error messages appearing during the programming sequence: Workshop Manual '9X00IN Basic instructions Procedure in the event of a termination in the control unit programming: Repeat control unit programming by restarting programming. and procedure for control unit programming using the PIWIS Tester' Read out fault memory. If necessary, work through existing faults and delete them. Information If control units are found to have faults that are not caused by control unit programming, these must first be found and corrected. This work cannot be invoiced under the workshop campaign number. 5 Press •F3“ to start the integration test in the control unit selection. All affected control units should now be successfully re-programmed or checked in the control unit overview and their status. Information If a deviation in the integration test is still indicated despite programming being carried out, this must be repeated. If the deviation persists, contact Technical Support. Apr 8, 2024 Page 2 of 3 6 End the diagnostic application. Switch off ignition. Disconnect Tester from vehicle. 7 Switch off and disconnect the battery charger. 8 Enter the campaign in the Warranty and Maintenance logbook. AfterSales Service Technical Information 08/24 ENU WRA8 4 Software overview for chassis control unit (PASM) Software Overview: Type Equipment Model year Software part number Software release Cayenne (9YA / 9YB) Adaptive air suspension (M-No. 1BK) 2024 to 2025 9Y0907727R 0930 (or higher) Cayenne (9YA / 9YB) Porsche Active Suspension Management (PASM) and steel suspension (M-No. 1BH) 2024 to 2025 9Y0907777R 0930 (or higher) Warranty processing Information The specified labor time was determined specifically for carrying out this campaign and includes all necessary preliminary and subsequent work. The labor time may differ from the labor time published in the Labor Operation List in the PCSS. Scope 1: Re-programming control unit for chassis control (PASM) Labor time: Re-programming control unit for chassis control (PASM) Includes: Connecting and disconnecting battery charger Connecting and disconnecting PIWIS Tester Reading out and deleting fault memories Labor time: 39 TU Invoicing: Damage number WRA8 66 000, repair code 1 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. © 2024 Porsche Cars North America, Inc. AfterSales Apr 8, 2024 Page 3 of 3