No. 2000

4
Bulletin #: 2000
Advanced Technical Information
Part ID: 4301
E3 Cayenne Air Suspension Leak Diagnosis
Vehicles Affected
Models
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Cayenne
2019 - present
All
N/A
Air Suspension
Revision History
Revision
Release Date
Changes
0
June 12, 2020
Original document
Condition
The vehicle appears to be sitting lower in one corner, one axle, or even all 4 corners in some cases.
Service Information
In an effort to make leak diagnosis in the air suspension a more streamlined process; leaks can be monitored via
pressure values for each air circuit in the PIWIS tester.
AfterSales
June 12, 2020
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4
Bulletin #: 2000
Advanced Technical Information
Part ID: 4301
It is not necessary to remove air lines and plug them with a special tool. The 9YA Cayenne was designed with this 		
new diagnostic process in mind.
As a result, the old 92A special tool (9825 fitting) doesn’t fit the new 9YA Cayenne.
If a leak is suspected:
•
Check the pressure values of the air circuits in the system.
•
Fill any circuit where the value is below the set point
•
Screen shot the values (a new screen shot can be taken later to show which circuit leaked)
•
Monitor the pressure values of the air circuits at selected intervals such as every 2, 4, 6 hours or more.
•
Once the circuit with the leak is determined, then further investigation to find the exact source of the leak 		
		may begin.
This is a more efficient method than disconnecting each circuit and installing a tool to isolate that circuit.
Warranty
Be sure to attach relevant screen shots of the pressure values to the job line to support an air leak.
•
Set point pressures put in the vehicle to start the leak test
•
Actual pressures after X amount of time that shows the leak.
Code the cause of failure and labors according to the diagnosed failure.
Search Items
Air suspension, leak, air leak, diagnosis, leak diagnosis
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.
©2020 Porsche Cars North America, Inc.
AfterSales
June 12, 2020
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