NHTSA ID Number: 11032230
Manufacturer Communication Number: No. 13-25
TSB/Document Date: 2026-05-05
Summary
Symptom based workshop manual for a Symptom - Oil Leakages on Double Clutch Transmission (PDK): Observe Specified Work Procedure
Symptom-based workshop manual
Service
13/25 ENU
3734
3
Symptom - Oil Leakages on Double Clutch Transmission (PDK): Observe Specified Work Procedure (SY
13/25)
Change
Overview:
Revision
Date
Change
0
05/20/2025
•
First publication
1
04/02/2026
•
Update to Required parts
for Replace double clutch
transmission
Model Year:
As of 2024
Model Line:
Panamera (YAA/YAB)
Concerns:
Double-clutch transmission (PDK)
Cause:
Oil leakages on double-clutch transmission.
Remedial
Action:
Find oil leakages and carry out the relevant repair measure.
Content:
•
•
•
•
•
•
•
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 leakage must be clearly identifiable and reproducible.
•
Engine oil and coolant must reach operating temperature during a test drive.
1
Document the original complaint condition with meaningful photos.
2
Attach documentation to PCSS line.
3
Clean the transmission thoroughly.
AfterSales
Apr 2, 2026
Page 1 of 41
3
Service
3734
ENU
Symptom-based workshop manual
13/25
Information
In the event of a complaint regarding oil leakages, the Porsche
double-clutch transmission must be thoroughly cleaned, including the transition between the oil pan and transmission, using a suitable cleaning
agent. Thereafter, both the transmission and the oil pan must be blown off with compressed air and
dried before leakage detection spray is applied to the suspected leakage point.
4
Spray large areas of the double-clutch transmission with SpotCheck around the suspected leakage
points.
5
Perform a test drive.
6
Review the double-clutch transmission for leaks and locate the leak.
7
Produce photo documentation of the leakage point located using SpotCheck.
8
Attach documentation to PCSS line.
Leaks on left side of transmission
Left side of transmission
Apr 2, 2026
Page 2 of 41
AfterSales
Symptom-based workshop manual
Position
Leak area
Possible cause(s)
Service
13/25 ENU
3734
3
Repair measure
Sealing ring damaged:
Replace sealing ring on ATF
cooling line.
For work procedure, see:
⇒ Technical Information
'Replacing sealing ring on
ATF cooling line'
ATF cooler sealing ring
Line corroded or crimping damaged:
Þ Left
⇒
side of
transmission
-1-
ATF cooler connections
ATF cooling line - corroded
Replace ATF cooling line.
For work procedure, see:
⇒ Technical Information
'Replacing ATF cooling line'
ATF cooling line - crimping damaged
AfterSales
Apr 2, 2026
Page 3 of 41
3
Service
3734
ENU
13/25
Symptom-based workshop manual
Screw loose
Check that it is installed
securely.
Sealing ring damaged
Check that it is installed
securely. Replace filling screw
if necessary.
For work procedure, see:
⇒ Technical Information
'Replacing screw plug'
Sealing ring damaged
Replace parking lock sealing
ring.
For work procedure, see:
⇒ Technical Information
'Replacing parking lock
sealing ring'
Screw loose
Check that it is installed
securely.
Sealing ring damaged
Check that it is installed
securely. Replace screw plug
if necessary.
For work procedure, see:
⇒ Technical Information
'Replacing screw plug'
Þ Left
⇒
side of
transmission
-2-
Filler screw
Þ Left
⇒
side of
transmission
-3-
Parking lock
Þ Left
⇒
side of
transmission
-4-
Screw plug
Screw loose
Þ Left
⇒
side of
transmission
-5-
Apr 2, 2026
Page 4 of 41
Screw plug
Sealing ring damaged
AfterSales
Check that it is installed
securely. Replace screw plug
if necessary.
For work procedure, see:
⇒ Technical Information
'Replace screw plug'
Symptom-based workshop manual
Service
13/25 ENU
3734
3
Leaks on right side of transmission
Right side of transmission
Position
Oil leakage
Possible cause(s)
Repair measure
Sealing ring damaged:
Replace sealing ring for front
output shaft.
For work procedure, see:
⇒ Technical Information
'Replacing sealing ring for
front output shaft'
Þ Right
⇒
side of
transmission
-1-
Front output shaft
Output shaft sealing ring
O-rings damaged:
AfterSales
Apr 2, 2026
Page 5 of 41
3
Service
3734
ENU
13/25
Symptom-based workshop manual
Connecting shaft damaged
Check connecting shaft and
replace if necessary.
For work procedure, see:
⇒ Technical Information
'Replacing connection shaft'
Cap damaged (2WD)
Replace cap at transmission
output.
For work procedure, see:
⇒ Technical Information
'Replacing transmission
output cap'
Screw loose
Check that it is installed
securely.
Seal damaged
Replace double clutch
transmission.
For work procedure, see:
⇒ Technical Information
'Replacing double clutch
transmission'
Screw loose
Check that it is installed
securely.
Seal damaged
Replace double clutch
transmission.
For work procedure, see:
⇒ Technical Information
'Replacing double clutch
transmission'
Þ Right
⇒
side of
transmission
-2-
Transmission housing
Þ Right
⇒
side of
transmission
-3-
Apr 2, 2026
Page 6 of 41
Transmission housing
AfterSales
Symptom-based workshop manual
side of
transmission
-5-
Seal damaged
Sealing ring damaged
Screw loose
Þ Right
⇒
side of
transmission
-6-
Connecting element
NTC sensor
Connecting element damaged
Screw loose
Þ Right
⇒
side of
transmission
-7-
Connecting element
RLS sensor
3
Replace double clutch
transmission.
For work procedure, see:
⇒ Technical Information
'Replacing double clutch
transmission'
Screw loose
Screw plug
3734
Check that it is installed
securely.
Transmission housing
Þ Right
⇒
13/25 ENU
Screw loose
Þ Right
⇒
side of
transmission
-4-
Service
Connecting element damaged
AfterSales
Check that it is installed
securely. Replace screw plug
if necessary.
For work procedure, see:
⇒ Technical Information
'Replacing screw plug'
Check screw connection. If
necessary, replace the NTC
sensor connection element.
For work procedure, see:
⇒ Technical Information
'Replacing connecting
elements'
Check screw connection. If
necessary, replace connecting
element for RLS sensor.
For work procedure, see:
⇒ Technical Information
'Replacing connecting
elements'
Apr 2, 2026
Page 7 of 41
3
Service
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13/25
Symptom-based workshop manual
Leaks on upper transmission side
Upper transmission side
Position
Þ Upper
⇒
transmission
side -1-
Oil leakage
Hydraulic space bleeder
Þ Upper
⇒
transmission
side -2-
Screw plug
Þ Upper
⇒
transmission
side -3-
Screw plug
Apr 2, 2026
Page 8 of 41
Cause
Repair measure
Oil over-filled
Check and top up ATF.
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TSB/Document ID: No. 13-25
Replacement Service Bulletin Number:
MFR Communication Date: 2026-04-02
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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