Service

Technical Information

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Troubleshooting: Front Window Pane Reversed – Closes and/or Opens Incorrectly (55/24)

Model Line:

Cayenne (9YA / 9YB)

Model Year:

As of 2019

Concerns:

Front window pane

Cause:

Customers complain that the front left or right window pane can be reversed or cannot be
opened/closed when ONE touch is pressed.
The following fault memory entries can also be stored in the fault memory of the front driver’s side /
passenger’s side door control unit:
•
•
•

B148754 – Power windows motor, no basic setting (030034)
B148729 – Power windows motor, implausible signal (030067)
B14874B – Power windows motor, overtemperature (030037)

The complaints indicate that the front power window is difficult to operate and this cannot be overcome.
Action:

Re-normalize the power windows and carry out troubleshooting. Then fix the fault.
Information
Replacing components without prior troubleshooting is not expedient.

Overview of causes for front power windows malfunctions
•
•
•
•

Deformed/damaged window shaft seal  Overview of causes for front power windows malfunctions
-1- in the window guide
Resistance inside the front power windows mechanism  Overview of causes for front power
windows malfunctions -2- due to contamination or lack of lubrication
Dirty window pane  Overview of causes for front power windows malfunctions -3- / high friction on
the window pane  Overview of causes for front power windows malfunctions -3Faulty power windows motor  Overview of causes for front power windows malfunctions -4-

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Overview of causes for front power windows malfunctions
Window shaft seal
Front power windows mechanism
Front window pane
Power windows motor

Required parts and materials as needed
Parts Info:

Required parts for troubleshooting described in this technical information on the front power window:
Part No.

Designation
– Location

Quantity as
needed

95555524300

 Fixing clip
– Door trim panel

8 pieces per door

Parts and materials required for individual troubleshooting must be determined using the
corresponding Workshop Manual and the Parts Catalogue (PET2).

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Technical Information

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Required tools
Tools:

•
•

•

P90999 - PIWIS Tester 4
Battery charger with a current rating of at least 90 A, e.g., VAS 5908 90A battery charger. For
further information about the battery chargers to be used, see the corresponding Workshop Manual.
 Workshop Manual '270689 Charging battery and vehicle electrical system'
Torque wrench, 2-10 Nm (1.5-7.5 ftlb.), e.g., V.A.G 1783 - Torque wrench, 2-10 Nm (1.5-7.5
ftlb.)

Re-normalize front power windows and perform troubleshooting
NOTICE
Control unit coding will be aborted if the driver's key is not recognized
•

If the driver's key is not recognized in the vehicle, coding cannot be started or will be interrupted.



Place the driver's key with the back facing down in the area in front of the storage compartment under
the armrest (emergency start tray) in order to guarantee a permanent radio link between the vehicle and
driver's key.

Work Procedure: 1

Connect the battery charger.
 Workshop Manual '270689 Charging battery and vehicle electrical system'

2

Check the front power windows function and confirm the fault pattern.

3

Remove the door trim panel, but leave the electric plug connections plugged in.
 Workshop Manual '705919 Removing and installing front door trim panel'

4

Restore factory setting to the affected door control unit and re-normalize front power windows.
4.1

Select “Front driver’s side door” or “Front passenger’s side door” in the control unit selection
screen (‘Overview’ menu).

4.2

Select Coding/programming.

4.3

Select the Restore factory settings / coding function (or new part coding) and confirm
with •F12“ (‘Next’).
•

The PIWIS Tester displays the message: Coding successful. Press •F12“ to continue.

4.4

Select Service/repairs.

4.5

Select the normalization power windows function. Press •F12“ to continue.
•

Follow the instructions and notes of the PIWIS Tester. Press •F12“ to continue.

4.6

Fulfil all conditions to be checked manually and tick them off. •F12“.

4.7

To start the power windows press •F8“ (‘Execute’), taking note of the warning message
‘Normalization run’.

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Assessment

Action

The PIWIS Tester displays the
( ) message: Normalization run
performed successfully.

Continue with Step  5.

The PIWIS Tester displays the
(✗) message: Normalization run
cancelled.

Continue with Step  9.

5

Go back to the Overview.

6

Read out and delete all control unit fault memories.
6.1

Press •F7“ in the control unit selection screen (‘Overview’ menu) to call up the Additional
menu.

6.2

Select the function “Read all fault memories and delete if necessary” and press •F12“
(‘Next’) to confirm.

7

Exit the diagnostic application, switch off the ignition, disconnect the PIWIS tester from the vehicle.

8

Check the front power windows function again.
Assessment
( )

Front power windows no longer have
any malfunctions after normalization.

Action
A defect in the power windows motor can be ruled
out. Then continue with Step  9.
Replace the power windows motor and re-program
the front driver’s side door / front passenger’s side
door control unit.
 Workshop Manual '645419 Removing and
installing power windows motor'

(✗)

Front power windows still have
malfunctions after normalization.

 Workshop Manual '577355 Replacing front door
control unit'
Install the door trim panel.
 Workshop Manual '705919 Removing and
installing front door trim panel'
Then continue with Step  10.

9

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Check the front power windows environment for unwanted resistance.

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Technical Information

55/24
Assessment

•

( )

•
•

(✗)

(✗)

The window shaft seal is clean,
undamaged and installed in the
correct position
Window pane is clean and free of
friction-enhancing deposits
Power windows mechanism has
no blockages or contamination
and is sufficiently lubricated

The window shaft seal is dirty.

The window shaft seal is damaged.

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Action
Install the door trim panel.
 Workshop Manual '705919 Removing and
installing front door trim panel'
Then continue with Step  11.

Clean the window shaft seal.
Then continue with Step  10.
Replace the window shaft seal.
 Workshop Manual '644819 Removing and
installing front window shaft seal'
Then continue with Step  10.

(✗)

Install the window shaft seal correctly.
The window shaft seal is not installed in  Workshop Manual '644819 Removing and
installing front window shaft seal'
the correct position.
Then continue with Step  10.

(✗)

(✗)

Window pane has dirt or deposits that
increase friction.

The front power windows mechanism
has blockages or contamination or is
not sufficiently lubricated.

Clean the window pane and remove frictionincreasing deposits.
Then continue with Step  10.
Clean, repair and lubricate the front power windows
mechanism. If irreparable, replace the front power
windows mechanism.
 Workshop Manual '645219 Removing and
installing front power windows'
Then continue with Step  10.

10 Check the front power windows function again and continue troubleshooting if necessary.
11 Switch off and disconnect the battery charger.
12 End of action.

Labor position and PCSS encryption
Information
Select the PCSS encryption of the cause accordingly.

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Labor position:
APOS

Labour operation

I No.

64549590

Power windows motor troubleshooting

64541901

Removing and installing power windows motor

64541902

Removing and installing power windows motor

70591901

Removing and installing front door trim panel

70591902

Removing and installing front door trim panel

57732553

Re-programming front door control unit

57732554

Re-programming front door control unit

64481901

Removing and installing front window shaft seal

64481902

Removing and installing front window shaft seal

64521901

Removing and installing front power windows
mechanism

64521902

Removing and installing front power windows
mechanism
PCSS encryption:

Location (FES5)

6454

Power windows motor

Damage type (SA4)

1611

does not work

Location (FES5)

6454

Power windows motor

Damage type (SA4)

1711

sluggish, jams, too little play

Location (FES5)

5773

Front door control unit

Damage type (SA4)

1611

Not functioning

Location (FES5)

6452

Front power windows mechanism

Damage type (SA4)

1611

does not work

Location (FES5)

6452

Front power windows mechanism

Damage type (SA4)

1711

sluggish, jams, too little play

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.

© 2024 Porsche Cars North America, Inc.

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