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NHTSA ID Number: 11030905

Manufacturer Communication Number: No. 88-20

TSB/Document Date: 2026-04-07


Summary

Technical information for a Complaint - Oil Leakages on Double-Clutch Transmission (PorscheeBay logo Doppelkupplung (PDK)): Observe Specified Procedure


2 piece(s)

9A700861500

⇒ Hexagon-head bolt
– Anti-roll bar clamp

4 piece(s)

PAF008674

⇒ Hexagon flange bolt, M12 x 105
– Trailing arm

2 piece(s)

PAF909664

⇒ Hexagon collar nut, self-locking M12
– Trailing arm

2 piece(s)

PAF008735

⇒ Hexagon-head bolt, M12 x 95
– Rear-axle carriereBay logo

2 piece(s)

PAF008673

⇒ Hexagon-head bolt M12 x 110
– Rear-axle carriereBay logo

2 piece(s)

PAF104694

⇒ M12 x 70 hexagon-head bolt
– Engine mount

2 piece(s)

AfterSales

Mar 31, 2026
Page 31 of 63

3

Service
3734

ENU

Technical Information

88/20

PAF008660

⇒ Collar nut M10
– Transmission support

4 piece(s)

PAF009267

⇒ Hexagon-head bolt M10 x 40
– Transmission bracket

4 piece(s)

WHT008727

⇒ Cheese head screw M10 x 46.5
– Drive shaft

16 piece(s)

99240735700

⇒ Base plate
– Drive shaft

8 piece(s)

PAF913091

⇒ Hexagon flange bolt (combination)
M16 x 75
– Drive shaft

2 piece(s)

Also use for all-wheel drive
PAF911439

⇒ Cheese head bolt with multiple-tooth
head M8 x 16
– Cardan shaft

Labor Position Labor position:
and PCSS
Encryption (29):
APOS

Labor operation

27934990

Rework high-voltage line

I No.

PCSS encryption:
Location (FES5)

37370

Transmission housing

Damage type (SA4)

5041

Oil/grease leak

Mar 31, 2026
Page 32 of 63

AfterSales

4 piece(s)

Service

Technical Information

88/20 ENU

3734

3

Left side of transmission (without ATF cooler)
Item

Oil leakage

Cause

Repair measure

Þ Left

Screw plug

Screw loose (A)

15A - 15B

Sealing ring damaged (B)

Replace screw and tighten to
27 Nm (20 ftlb.).

Oil filler screw

Screw loose (C)

15C - 15D

Sealing ring damaged (D)

side of
transmission
(without ATF
cooler) -15-

Þ Left

Screw loose (A)

side of
transmission
(without
ATF cooler)
-15.1-

15.1A - 15.1B

Þ Left

Oil chamber partition

side of
transmission
(without ATF
cooler) -16-

Replace screw, see ⇒ Workshop Manual
'370235 Checking and topping up ATF'.

Screw plug

If there are oil leakages in this
Þ Left side of
area, see also ⇒
transmission (without ATF
cooler) -8 and 15 / 15.1-.

Sealing ring damaged (B)

Replace screw and tighten to
27 Nm (20 ftlb.).

Check the area using an endoscope.
Shaft sealing ring damaged

AfterSales

Replace double-clutch transmission
if there are leaks, see ⇒ Workshop
Manual '373419 Removing and installing
double clutch transmission'.

Mar 31, 2026
Page 33 of 63

3

Service
3734

ENU

Technical Information

88/20

Information
If there is a leak around item 16, observe the specified procedure.

Clean oil leak bore area and coat it directly with leak-locating spray

Correct the oil level

Perform a test drive

Visually inspect the leak area of the oil leak bore

If the fault can be reproduced, the double clutch transmission must be replaced. If not, continue fault finding.
Parts (15):

Required parts (for screw plug/oil filler screw):
Part No.

Designation

Quantity

PAF008528

⇒ Screw plug with sealing ring

1 piece(s)

Labor Position Labor position:
and PCSS
Encryption (15A
- 15D):
APOS

Labor operation

I No.

37374952

Rework transmission housing (screw plug)

37374953

Rework transmission housing (oil filler screw)

37374992

Rework transmission housing (screw plug) (992
PA)

37374993

Rework transmission housing (oil filler screw) (992
PA)
PCSS encryption:

Location (FES5)

37370

Transmission housing

Damage type (SA4)

1511

Breakage

Parts (15.1A 15.1B):

Mar 31, 2026
Page 34 of 63

Required parts (for screw plug):
Part No.

Designation

Quantity

PAF008528

⇒ Screw plug with sealing ring

1 piece(s)

AfterSales

Service

Technical Information

88/20 ENU

3734

3

Labor Position Labor position:
and PCSS
Encryption
(15.1A - 15.1B):
APOS

Labor operation

I No.

37374954

Rework transmission housing

37374994

Rework transmission housing (992 PA)
PCSS encryption:

Location (FES5)

37370

Transmission housing

Damage type (SA4)

1511

Breakage

Parts (16):

Required parts (for oil chamber partition):
Part No.

Designation
– Location of use

Quantity

0DT300041DX

Transmission (M-no. G1F)

1 piece(s)

or
0DT300043DX

⇒ Transmission with differential lock
(M-no. G1F)

1 piece(s)

or
0DT300061DX

⇒ Transmission (M-no. G1G)

1 piece(s)

or
0DT300063DX

⇒ Transmission with differential lock
(M-no. G1G)

1 piece(s)

or
0DU300043DX

Transmission with differential lock
(M-no. 0K1) and (M-no. G1F)

1 piece(s)

or
0DU300063DX

⇒ Transmission with differential lock
(M-no. 0K1) and (M-no. G1G)

1 piece(s)

Additionally required parts
WHT008727

⇒ Cheese head bolt
– Drive shaft

12 piece(s)

9A7407357

⇒ Base plate
– Drive shaft

6 piece(s)

AfterSales

Mar 31, 2026
Page 35 of 63

3

Service
3734

ENU

Technical Information

88/20

PAF008673

⇒ Hexagon-head bolt
– Rear-axle carriereBay logo

2 piece(s)

PAF008735

⇒ Hexagon-head bolt
– Rear-axle carriereBay logo

2 piece(s)

WHT007957

⇒ Hexagonal lock nut
– Coupling rod

2 piece(s)

or
9A700781900

⇒ Hexagon nut
– Coupling rod (PDCC)

2 piece(s)

PAF909664

⇒ Hexagon collar nut
– Lower trailing arm

2 piece(s)

PAF008674

⇒ Hexagon flange bolt
– Lower trailing arm

2 piece(s)

WHT008676

⇒ Hexagon-head bolt
– Strut

4 piece(s)

Additionally required parts for vehicles
with lithium-ion battery (M-no. 0K1)

Mar 31, 2026
Page 36 of 63

0DU301139

Seal
– Line connection box

1 piece(s)

0DU301215

Seal
– Line connection box

1 piece(s)

PAF910436

⇒ Internal hexagon round-head bolt
– Line connection box

6 piece(s)

9A700861500

⇒ Hexagon-head bolt
– Anti-roll bar clamp

4 piece(s)

PAF104694

⇒ M12 x 70 hexagon-head bolt
Engine mount

2 piece(s)

PAF008660

⇒ Collar nut M10
– Transmission support

4 piece(s)

PAF009267

⇒ Hexagon-head bolt M10 x 40
Transmission bracket

4 piece(s)

PAF913091

⇒ Hexagon flange bolt (combination)
M16 x 75

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TSB/Document ID: No. 88-20

Replacement Service Bulletin Number:

MFR Communication Date: 2026-04-01

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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