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WJ90 - Checking Hinge For Convertible-Top Compartment Lid (Workshop Campaign)
Vehicle type:
911 Targa 4 (991)/911 Targa 4S (991)/911 Targa 4 GTS (991)
Model Year:
As of 2014 up to 2019
Subject:
Hinge for convertible-top compartment lid
Important:
CRITICAL WARNING - This campaign includes steps where control unit(s) in the vehicle will be
programmed with the PIWIS Tester. The vehicle voltage must be maintained between 13.5 volts and 14.5
volts during this programming. Failure to maintain this voltage could result in damaged control unit(s).
Damage caused by inadequate voltage during programming is not a warrantable defect. The technician
must verify the actual vehicle voltage in the PIWIS Tester before starting the campaign and also document
the actual voltage on the repair order.
Information:
There is a possibility that the end position in the actuating mechanism for the convertible-top
compartment lid on the affected vehicles may not be reached due to unfavorable tolerances.
This could result in the convertible top being partially released.
Partial release of the convertible top will not be noticed by the customer because no warning message is
displayed. As a result, the convertible-top compartment lid could lift up slightly at high speeds and could
cause problems such as visible shaking and loud wind noise.
Remedial
Action:
•
•
Checking hinge for convertible-top compartment lid and reworking it if necessary
Re-coding convertible top control unit (depending on the date of manufacture of the vehicle)
Information
Updated coding parameters for the convertible top control unit have been used during series
production. Vehicles produced since the introduction of the updated coding parameters do not
therefore have to be re-coded.
In order to differentiate the vehicles, they are assigned different campaign scopes.
•
Campaign scope 1 and 3: Coding not required
•
Campaign scope 2 and 4: Coding is required
To find out which campaign scope is assigned to the respective vehicle, see also PIWIS Vehicle
Information.
For an overview of the campaign scopes, see  Technical Information 'Warranty processing'
Affected
Vehicles:
Only the vehicles assigned to the campaign (see also PIWIS Vehicle information). This campaign affects
4,104 vehicles in North America.
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Installation
Position:
Installation position of hinge
Required materials and tools
Materials:
Required materials (usually already available in the Porsche Dealership):
Part No.
Designation
– Use
Qty.
00004330509
 Lubricant (Krytox GPL205)
– Hook on hinge
0.6 g
(60g tube)
NOTICE
Use of a PIWIS Tester software version that is older than the prescribed version
•
Measure is ineffective

Always use the prescribed version or a higher version of the PIWIS Tester software for control unit
programming.
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Technical Information
Tools:
•
•
•
•
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Star gauges, e.g. VAS 6937, 3371 or equivalent
9900 - PIWIS Tester 3 with PIWIS Tester software version 37.400.020 (or higher) installed
Battery charger with a current rating of 90A VAS 5908
Commercially available suction cups
Checking hinge for convertible-top compartment lid and reworking it if necessary - all vehicles
Work Procedure: 1
Switch on ignition and open and close the convertible top completely using the switch in the center
console.
2
Extend rear spoiler manually using the button in the center console and switch off ignition.
3
Wait at least 5 minutes after actuating the convertible-top compartment lid so that the convertible
top mechanism is depressurised.
4
Check that the hinge for the convertible-top compartment lid is locking correctly.
4.1
Using suction cups at the left and right of
the rear window, pull upwards forcefully
at least 3 times and check whether the
convertible-top compartment lid can be lifted.
Checking by pulling at the front
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4.2
Pull convertible-top compartment lid at
the left and right in the rear spoiler area up
forcefully at least 3 times and shake it
slightly.
•
•
The convertible-top compartment lid
cannot be lifted: The convertible-top
compartment lid is locked correctly.
The convertible-top compartment
lid lifts up: The hinge is not locking
correctly.
Subsequent procedure, depending on
the result of the check:
- ( ) - Convertible-top compartment lid
is OK and coding is not required. End of
action required. Warranty processing: Scope
1.
Checking by pulling at the rear
- ( ) - Convertible-top compartment lid is
OK and coding is required: Continue with  Technical Information 'Re-coding convertible
top control unit'. Warranty processing: Scope 2.
- () - Convertible-top compartment lid is not OK and coding is not required: Continue
with  Workshop Manual '61901510 Adjusting convertible-top compartment lid'. Warranty
processing: Scope 3.
- () - Convertible-top compartment lid is not OK and coding is required: Continue
with  Workshop Manual '61901510 Adjusting convertible-top compartment lid' and then
 Technical Information '61901510 Re-coding convertible top control unit'. Warranty
processing: Scope 4.
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Clean the front and rear hook on the left and right
hinge and then lubricate them with Krytox as shown.
Lubricating hooks
Re-coding convertible top control unit - only for vehicles with campaign scope 2 and 4
NOTICE
Coding will be aborted in the event of low voltage.
•
Increased power consumption during diagnosis can cause a drop in voltage, which can result in one or
more fault entries and abortion of the coding process.

Before getting started, connect a suitable battery charger to the jump-start terminals in the engine
compartment.
NOTICE
Coding will be aborted if the WLAN connection is unstable.
•
An unstable WiFi connection can interrupt communication between the PIWIS Tester and the vehicle
communication module (VCI). As a result, coding may be aborted.

During control unit coding, always connect the PIWIS Tester to the vehicle communication module (VCI) via
the USB cable.
NOTICE
Control unit coding will be aborted if the vehicle key is not recognized
•
If the vehicle key is not recognized in vehicles with Porsche Entry & Drive, coding cannot be started or will
be interrupted.
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Switch on the ignition using the original vehicle key. To do this, replace the dummy key in the ignition lock
with the original vehicle key if necessary.
Work Procedure: 1
Connect battery charger.
First connect the positive cable of the charger to the
positive terminal of the battery and then connect the
negative cable of the charger to the ground point for
jump-lead starting  External power connection.
2
Switch on the ignition.
3
9900 - PIWIS Tester 3 must be connected to the
vehicle communication module (VCI) via the USB
cable. Then connect the communication module
to the vehicle and switch on the PIWIS Tester.
4
On the PIWIS Tester start screen, call up the 'Diagnostics' application. The vehicle type is then read
out, the diagnostic application is started and the
control unit selection screen is populated.
5
Code convertible top control unit.
External power connection
5.1
Select the  'Convertible top/Targa roof' control unit in the control unit selection screen
( 'Overview' menu) and press •F12“ to confirm your selection.
5.2
Once the convertible top control unit has been found and is displayed in the overview, select
the  'Coding/programming' menu.
5.3
Select the  'Automatic coding' function and press •F12“ to start coding.
5.4
When coding is complete, the message “Coding has been completed successfully” is
displayed and a tick appears in the 'Status' box.
If coding is not completed successfully (error message “Coding was not completed
successfully”), coding must be repeated.
5.5
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Once coding is completed successfully, press •F12“ and then go back to the control unit
selection screen.
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Reading out and erasing fault memory
Work Procedure: 1
Press •F7“ in the control unit selection screen ('Overview' menu) to call up the Additional menu.
2
Select the function “Read all fault memories and
erase if required” and press •F12“ ('Next') to
confirm your selection  Erasing fault memories.
3
The fault memories of the control units are read out.
4
Once you have read out the fault memories, check
the fault memory entries.
Information
If control units are found to have faults that are not
Erasing fault memories
caused by control unit programming, these must first
be found and corrected. This work cannot be invoiced under the workshop campaign number.
5
Press •F8“ to delete fault memory entries.
6
Press •F12“ ('Yes') in response to the question as to whether you really want to delete all fault
memory entries.
The faults stored in the fault memories of the various control units are deleted.
Information
If fault memory entries for individual control units cannot be deleted, proceed as follows:
•
Switch off the ignition.
•
Disconnect the PIWIS Tester diagnostic connector from the diagnostic socket.
•
Lock the vehicle using the driver's key.
•
Wait approx. 1 minute before unlocking the vehicle again.
•
Start the engine, leave it running for a short time and then stop it again.
•
Switch off the ignition and wait approx. 10 seconds before switching it back on again.
•
Plug the PIWIS Tester diagnostic connector into the diagnostic socket again and restore
communication with the vehicle.
•
Read out the fault memory again and delete any fault memory entries that are stored.
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Once you have erased the fault memories, select
the 'Overview' menu to return to the control unit
selection screen  Control unit selection.
Control unit selection
Concluding work
Work Procedure: 1
Switch off the ignition.
2
Disconnect the PIWIS Tester from the vehicle.
3
Switch off and disconnect the battery charger.
4
Enter the campaign in the Warranty and Maintenance booklet.
Warranty processing
Information
The working times specified were determined especially for the performance of this campaign and may
deviate from the working times published in the catalogue of operations contained in PIWIS.
Scope 1:
•
Checking hinge for convertible-top compartment lid
Working time:
Labor time: 36 TU
Checking hinge for convertible-top compartment lid
Includes:
Performing function test on convertible top
Cleaning and greasing hooks
Required materials:
00004330509
Krytox GPL205, 60g tube
 Damage Code WJ90 066 000 1
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Scope 2:
•
•
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Checking hinge for convertible-top compartment lid
Re-coding convertible top control unit
Working time:
Labor time: 50 TU
Checking hinge for convertible-top compartment lid and re-coding
convertible top control unit
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memory
Performing function test on convertible top
Cleaning and greasing hooks
Required materials:
00004330509
Krytox GPL205, 60g tube
0.1
 Damage Code WJ90 066 000 1
Scope 3:
•
Checking and adjusting hinge for convertible-top compartment lid
Working time:
Labor time: 477 TU
Checking and adjusting hinge for convertible-top compartment lid
Includes:
Checking convertible-top compartment lid hinge
Adjusting convertible-top compartment lid
Removing and installing rear window (Targa)
Removing and installing side trim panel for rear luggage
compartment
Adjusting trim panel for Targa bar
Performing function test on convertible top
Cleaning and greasing hooks
Required materials:
00004330509
Krytox GPL205, 60g tube
0.1
Damage Code WJ90 066 000 1
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Scope 4:
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Checking and adjusting hinge for convertible-top compartment lid
Re-coding convertible top control unit
Working time:
Labor time: 491 TU
Checking and adjusting hinge for convertible-top compartment lid and
re-coding convertible top control unit
Includes:
Checking convertible-top compartment lid hinge
Adjusting convertible-top compartment lid
Removing and installing rear window (Targa)
Removing and installing side trim panel for rear luggage
compartment
Adjusting trim panel for Targa bar
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memory
Performing function test on convertible top
Cleaning and greasing hooks
Required materials:
00004330509
Krytox GPL205, 60g tube
0.1
Damage Code WJ90 066 000 1
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.
© 2019 Porsche Cars North America, Inc.
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