NHTSA ID Number: 10189607
Manufacturer Communication Number: No. 205-20
TSB/Document Date: 2021-04-02
Summary
Workshop information for a transmission symptom. What to do if there are oil leaks on the automatic transmission.
Symptom-based workshop manual
Service
205/20 ENU
3735
3
Transmission Symptom - Oil Leaks on Automatic Transmission: Observe Specified
Procedure (SY 205/20)
Model Line:
Cayenne (9YA/9YB)
Model Year:
As of 2018
Concerns:
Automatic transmission
Symptom:
Oil leaks are found on the vehicle in the area of the automatic transmission. The location and cause of the
problem cannot always be clearly determined.
Background:
We have discovered that the location and cause could not always be clearly determined in the dealer
organization when attempting to resolve the complaint “Oil leak”. As a result, some of the repair
measures that were carried out were not always effective.
An oil-contaminated oil pan, for example, may also be caused by oil migrating from the threaded
connection on the oil line.
Information
Oil leaks on the transfer box are described in the document Technical Information 'Transmission
symptom - Oil leaks on transfer box: Observe specified procedure (SY 206/20)'.
Remedial
Action:
Find oil leaks and carry out the relevant repair measure.
Preparatory work
Work
Procedure:
Information
•
Oil leaks must be clearly identifiable and reproducible.
•
Engine oil and coolant must have reached operating temperature during a test drive.
1
Document the original complaint condition with meaningful photos.
2
Attach documentation to PQIS line.
3
Clean automatic transmission and transfer box thoroughly.
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Symptom-based workshop manual
205/20
Information
If the oil leak has spread so that the oil pan is also
contaminated Oil migration, proceed as follows in
the event of a complaint:
• Check that the screws on the ATF pan are
accessible and are seated correctly with the
specified tightening torque and secure properly if
necessary.
• Clean the area of the ATF pan extremely thoroughly
as oil penetration of the ATF pan seal can result in
incorrect interpretation.
4
Spray large areas of the automatic transmission and
transfer box with SpotCheck around the suspected
leakage points.
5
Perform a test drive.
6
Locate the oil leak:
•
•
•
Oil migration
The oil leak is located on the transfer box, continue with Technical Information 'Transmission
symptom - Oil leaks on transfer box: Observe specified procedure (SY 206/20)'
The oil leak is located on the automatic transmission, continue with Technical Information 'Oil
leaks on automatic transmission'.
The oil leak cannot be clearly identified, continue with Technical Information 'Oil leaks on
automatic transmission'.
7
Produce photo documentation of the leakage point located using SpotCheck.
8
Attach documentation to PQIS line.
Oil leaks on automatic transmission
Information
Traces of oil on the ATF pan can occur as a result of oil migration.
Only in rare cases is the ATF pan seal defective.
1
Check for oil leaks on the underside of the ATF pan Crack in ATF pan.
If a crack is discovered, replace the ATF pan, see Technical Information 'Replacing ATF pan'.
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AfterSales
Symptom-based workshop manual
Service
205/20 ENU
3735
3
Crack in ATF pan
Information
An oil-contaminated oil pan may also be caused by oil migrating from the threaded connection on the oil
line.
2
Check for oil leaks on the flange of the ATF cooling line Flange leaking or Transmission housing
porous.
2.1
In the case of oil leaks on the flange, replace both sealing rings, see Technical Information
'Replacing sealing ring on ATF cooling line'.
2.2
In the case of oil leaks between the flanges (transmission housing porous), replace the
automatic transmission, see Technical Information 'Replacing automatic transmission'
Flange leaking
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205/20
Symptom-based workshop manual
Transmission housing porous
3
Check for oil leaks on the ATF cooling lines Friction welded joint for ATF cooling line faulty or
Friction welded joint for ATF cooling line PHEV faulty.
In the case of oil leaks on the friction welded joint (production fault), replace the relevant ATF cooling
line, see Technical Information 'Replacing ATF cooling line'.
Friction welded joint for ATF
cooling line faulty
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AfterSales
Symptom-based workshop manual
Service
205/20 ENU
3735
3
Friction welded joint for ATF cooling
line PHEV faulty
4
Check for oil leaks around the protective tube for drive shaft Drive-shaft sealing ring damaged
(front protective tube) and Drive-shaft sealing ring damaged (rear protective tube).
In the case of damage, replace both drive-shaft sealing rings, see Technical Information
'Replacing drive shaft sealing ring' .
Drive-shaft sealing ring damaged
(front protective tube)
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205/20
Symptom-based workshop manual
Drive-shaft sealing ring damaged
(rear protective tube)
5
Check for oil leaks around the output shaft to the transfer box Oil migration and Oil leak on
output-shaft sealing ring.
5.1
In the case of damage, replace the output shaft sealing ring, see Technical Information
'Replacing output shaft sealing ring'.
5.2
In the case of damage, replace the transfer-gear sealing ring, see Technical Information
'Transmission symptom - Oil leaks on transfer box: Observe specified procedure (SY
206/20)'
Oil migration
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AfterSales
Symptom-based workshop manual
Service
205/20 ENU
3735
3
Oil leak on output-shaft sealing ring
Replacing sealing ring on ATF cooling line
Work Procedure: 1
2
Parts Info:
Replace sealing ring on ATF cooling line at the flange, see Workshop Manual '386219 Removing
and installing ATF cooling line'.
Check and top up ATF, see Workshop Manual '370235 Checking and topping up ATF'.
Parts required:
Part No.
Designation
– Location
Qty.
N 90666003
O-ring
– ATF cooling line
2 ea.
PAF82595100
Screw
– Center underbody cover
2 ea.
PAB39800803
Cover
– ATF pan
1 ea.
or
PAB398008B
Cover (transmission number A2901, A3001,
A4002, A20P1, A30P1)
– ATF pan
1 ea.
PAF00072900
Hexagon socket head bolt
– Front underbody cover
3 ea.
PAB32154900
Screw plug
– Checking and topping up ATF
1 ea.
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Materials:
ENU
Required materials (usually already available at the Porsche
dealer):
Part No.
Designation
– Use
Transmission oil (gearwheel set)
– Checking and topping up ATF
0004321054
1) approx.
Invoicing:
Symptom-based workshop manual
205/20
Qty.
20 liter/ 5.28 gal
container 1)
0.1 liter/ 3.38 fl oz required per vehicle.
For documentation and warranty invoicing, enter the labor operations, PQIS coding and relevant part
numbers specified below in the warranty claim:
APOS
Labor operation
I No.
37350100
Checking automatic transmission
38621900
37023555
Checking and topping up ATF
PQIS coding:
Location (FES5)
38620
ATF cooling line
Damage type (SA4)
5043
Oil leak
References:
Workshop Manual '386219 Removing and installing line for ATF cooling'
Workshop Manual '370235 Checking and topping up ATF'
Technical Information '370235 Transmission symptom - Oil leaks on transfer box: Observe specified
procedure (SY 206/20)'
Replacing ATF cooling line
Work Procedure: 1
2
Parts Info:
Mar 1, 2021
Page 8 of 23
Replace ATF cooling line, see Workshop Manual '386219 Removing and installing ATF cooling
line'.
Check and top up ATF, see Workshop Manual '370235 Checking and topping up ATF'.
Parts required:
Part No.
Designation
– Location
Qty.
PAF82595100
Screw
– Center underbody cover
2 ea.
PAB39800803
Cover
– ATF pan
1 ea.
AfterSales
Symptom-based workshop manual
Service
205/20 ENU
3735
3
or
PAB398008B
Cover (transmission number A2901, A3001,
A4002, A20P1, A30P1)
– ATF pan
1 ea.
PAF00072900
Hexagon socket head bolt
– Front underbody cover
3 ea.
PAB32154900
Screw plug
– Checking and topping up ATF
1 ea.
Additional parts required (V6 mono and biturbo without PHEV):
Part No.
Designation
– Location
Qty.
PAB31781800
Oil supply line
– ATF cooling
1 ea.
or
PAB31781700
Oil return line
– ATF cooling
1 ea.
Additional parts required (V6 monoturbo PHEV):
Part No.
Designation
– Location
Qty.
PAB317801A
Oil pressure line
– ATF cooling
1 ea.
Additional parts required (V8 biturbo without PHEV):
Part No.
Designation
– Location
Qty.
PAB31781810
Oil supply line
– ATF cooling
1 ea.
or
PAB31781710
Oil return line
– ATF cooling
AfterSales
1 ea.
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Service
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Symptom-based workshop manual
205/20
Additional parts required (V8 biturbo PHEV):
Part No.
Designation
- 6X better wear protection on critical engine parts than...
- 1.3X better sludge protection than industry standards*
- 3X Stronger against viscosity breakdown than leading full...
- Protection for 10,000 miles between oil changes
- Meets or exceeds the following specifications: API SP/SN...
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TSB/Document ID: No. 205-20
Replacement Service Bulletin Number:
MFR Communication Date: 2021-03-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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