NHTSA ID Number: 10191720
Manufacturer Communication Number: No. 163-20
TSB/Document Date: 2021-05-05
Summary
Information on how to remedy oil leaks on the double clutch PDK transmission.
Service
Technical Information
163/20 ENU
3734
3
Complaint - Oil Leaks on Double Clutch Transmission (Porsche
Doppelkupplung (PDK)):
Observe Specified Procedure (163/20)
Model Line:
Panamera (971)
Model Year:
As of 2017
Concerns:
Double clutch transmission (PDK)
Information:
Oil leaks on double clutch transmission.
Action required: Find oil leaks and carry out the relevant repair measure.
Contents:
•
•
•
•
•
•
•
Preparatory work, see Technical Information 'Preparatory work'
Leaks on left side of transmission Technical Information 'Leaks on left side of transmission'
Leaks on right side of transmission Technical Information 'Leaks on right side of transmission'
Leaks on upper side of transmission Technical Information 'Leaks on upper side of transmission'
Leaks on lower side of transmission Technical Information 'Leaks on lower side of transmission'
Leaks on front side of transmission Technical Information 'Leaks on front side of transmission'
Leaks on rear side of transmission Technical Information 'Leaks on rear side of transmission'
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 the transmission thoroughly.
4
Spray large areas of the transmission with SpotCheck around the suspected leakage points.
5
Perform a test drive.
6
Check the transmission for leaks and find the leak.
7
Produce photo documentation of the leakage point located using SpotCheck.
8
Attach documentation to PQIS line.
AfterSales
Apr 5, 2021
Page 1 of 43
3
Service
3734
Technical Information
ENU 163/20
Leaks on left side of transmission
Left side of transmission
Position
Leak area
Left side
of transmission -1-
Repair measure
Sealing ring damaged
Replace sealing ring on ATF cooling line,
see Technical Information 'Replacing
sealing ring on ATF cooling line'.
Line damaged
Replace ATF cooling line, see Technical
Information 'Replacing ATF cooling line'.
Plug loose
Check that it is installed securely.
Sealing ring damaged
Replace double clutch transmission,
see Technical Information 'Replacing
double clutch transmission'.
Sealing ring damaged
Replace sealing ring for parking lock,
see Technical Information 'Replacing
sealing ring for parking lock'.
Plug loose
Check that it is installed securely.
Sealing ring damaged
Replace double clutch transmission,
see Technical Information 'Replacing
double clutch transmission'.
ATF cooler connections
Left side
of transmission -2-
Possible cause(s)
Screw plug
Left side
of transmission -3-
Parking lock
Left side
of transmission -4-
Apr 5, 2021
Page 2 of 43
Screw plug
AfterSales
Service
Technical Information
Plug loose
Left side
of transmission -5-
163/20 ENU
Screw plug
Sealing ring damaged
3734
3
Check that it is installed securely.
Replace screw plug if necessary,
see Technical Information
'Replacing screw plug'.
Leaks on right side of transmission
Right side of transmission
Position
Oil leak
Possible cause(s)
Repair measure
Sealing ring damaged
Replace sealing ring for front
output shaft, see Technical Information 'Replacing sealing ring
for front output shaft'.
O-ring damaged
Right
side of
transmission -1-
Front output shaft
Connecting shaft damaged
Check connecting shaft and replace it if
necessary, see Technical Information
'Replacing connecting shaft'.
Cap damaged (2WD)
Replace cap at transmission output,
see Technical Information 'Replacing
cap at transmission output'.
AfterSales
Apr 5, 2021
Page 3 of 43
3
Service
3734
Right
side of
transmission -2-
Transmission housing
Right
side of
transmission -3-
Transmission housing
Right
side of
transmission -4-
Transmission housing
Right
side of
transmission -5-
Technical Information
ENU 163/20
Screw loose
Check that it is installed securely.
Seal damaged
Replace double clutch transmission,
see Technical Information 'Replacing
double clutch transmission'.
Screw loose
Check that it is installed securely.
Seal damaged
Replace double clutch transmission,
see Technical Information 'Replacing
double clutch transmission'.
Screw loose
Check that it is installed securely.
Seal damaged
Replace double clutch transmission,
see Technical Information 'Replacing
double clutch transmission'.
Plug loose
Screw plug
Sealing ring damaged
Leaks on upper side of transmission
Upper side of transmission
Apr 5, 2021
Page 4 of 43
AfterSales
Check that it is installed securely.
Replace screw plug if necessary,
see Technical Information
'Replacing screw plug'.
Service
Technical Information
Position
Oil leak
163/20 ENU
Hydraulic chamber breather
3
Cause
Repair measure
Oil over-filled
Check and top up ATF, see
Technical Information 'Checking
and topping up ATF'.
Insufficient defoamer
Change ATF, see Technical Information
'Replacing oil drain plug'.
Breather defective
Replace hydraulic chamber breather,
see Technical Information
'Replacing breather'.
Upper
side of
transmission -1-
3734
Leaks on lower side of transmission
Information
If oil has leaked into the ATF pan, proceed as follows in the event of a complaint:
•
Check that accessible screws on the ATF pan are installed securely with the specified tightening
torque and tighten them correctly if necessary.
•
Clean the ATF pan area thoroughly as oil leaking in under the ATF pan seal can lead to the wrong
conclusions.
Lower side of transmission
AfterSales
Apr 5, 2021
Page 5 of 43
3
Service
3734
Position
Oil leak
Lower
side of
transmission -1-
Oil drain plug
Lower
side of
transmission -2-
Cause
Repair measure
Plug loose
Check that it is installed securely.
Replace oil drain plug if necessary,
see Technical Information
'Replacing oil drain plug'.
Sealing ring damaged
Screws loose
ATF pan
Lower
side of
transmission -3-
Technical Information
ENU 163/20
Oil inspection plug
Seal damaged
Replace ATF pan, see Technical
Information 'Replacing ATF pan'.
Plug loose
Check that it is installed securely.
Replace lifting tube and oil inspection
plug if necessary, see Technical
Information 'Replacing oil inspection
plug and oil pipe'.
Lifting tube loose
Leaks on front side of transmission
Front side of transmission
Apr 5, 2021
Page 6 of 43
Check that they are installed
securely. Replace screws on the
ATF pan if necessary.
AfterSales
Service
Technical Information
Position
Oil leak
Apparent assembly grease
leak
No action required.
Grease leak on dual-mass
flywheel
Check dual-mass flywheel, see
Technical Information 'Checking
dual-mass flywheel (DMF) on vehicles
with PDK (11/14)'.
Engine leaking
Find oil leaks and fix them.
Radial shaft seal on clutch
cover damaged
Replace radial shaft seal, see
Technical Information 'Replacing
radial shaft seal'.
O-ring on clutch cover
damaged
Replace double clutch transmission,
see Technical Information 'Replacing
double clutch transmission'.
Clutch cover
Radial shaft seal on clutch
cover damaged
Replace radial shaft seal, see
Technical Information 'Replacing
radial shaft seal'.
Central connector at the left
Connector leaking
Replace wire harness in transmission,
see Technical Information 'Wire
harness displaced'.
Central connector at
the right
Connector leaking
Replace double clutch transmission,
see Technical Information 'Replacing
double clutch transmission'.
Clutch bell-housing and
clutch cover
Front
side of
transmission -3-
Front
side of
transmission -4-
3
Repair measure
Front
side of
transmission -2-
3734
Cause
Front
side of
transmission -1-
163/20 ENU
AfterSales
Apr 5, 2021
Page 7 of 43
3
Service
Technical Information
ENU 163/20
3734
Leaks on rear side of transmission
Rear side of transmission
Position
Cause
Repair measure
Shaft sealing ring damaged
Replace sealing ring on cardan flange,
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TSB/Document ID: No. 163-20
Replacement Service Bulletin Number:
MFR Communication Date: 2021-04-05
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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