No. 50-21-1

Service
Technical Information
50/21
ENU
AMA2
6
AMA2 - Replacing Seat Occupancy Detection System for Passenger Seat (USA/Canada)
(Recall Campaign)
Revision:
This bulletin replaces bulletin Group 6 50/21 AMA2, dated November 4, 2021.
Model Year:
As of 2015 up to 2018
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.
Model Line:
Macan
Equipment:
Country equipment USA (C02)/Canada (C36)
Concerns:
Seat occupancy detection system for passenger seat
Information:
Sensor mats for seat occupancy detection, on which the conductive fabric can break, were
installed in the passenger seat on the affected vehicles.
If the conductive fabric breaks, the front airbags on the passenger's side will be deactivated because
correct seat occupancy detection can no longer be guaranteed. The airbag warning light and Passenger
Airbag OFF light will be activated in order to alert the driver.
Action required: Replace the seat occupancy detection system according to the campaign scope assigned to the
respective vehicle.
Information
To find out which campaign scope is assigned to the respective vehicle for replacing the seat
occupancy detection system, see PIWIS Vehicle Information.
The part numbers of the parts required for the respective vehicle are specified in the assigned scope
for “Replacing seat occupancy detection system for passenger seat".
For an overview of the campaign scopes, see:  Technical Information 'Warranty processing'
Affected
Vehicles:
Only vehicles assigned to the campaign (see also PCSS Vehicle Information).
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Spare parts information
Information
When replacing the occupant classification components,
all coordinated components (padding, sensor mat and
control unit) in the repair kit must be replaced.
Due to worldwide semiconductor bottlenecks at individual
suppliers, we were unfortunately unable to include the
corresponding occupant classification control units in
the repair kit as part of this campaign.
To avoid delay in the implementation of this measure, the
occupant classification control unit installed in the
vehicle is reused in this particular case.
1
2
– Padding with affixed sensor mat - replace
– Occupant classification control unit - reuse
When implementing this measure, pay particular attention
to the following:
Contents of occupant classification system repair kit
•
The sensor mat for the occupant classification system must not be removed from the foam part.
•
Mixed installation, e.g. “old” padding and “new” sensor mat, is not permitted.
•
The existing control unit for occupant classification must not be removed and must be reprogrammed with the provided programming box.
•
The one-time procurement of the required programming box can be found in the section "Required
tools".
•
The direct programming of the control unit occupant classification with the currently valid
software is only approved and released within the scope of this campaign.
•
After carrying out this campaign, in the event of a further repair case, the usual repair concept
with complete replacement of all components (including control units) for occupant classification must be used.
Information
Between delivery of the padding to its installation in the front seat, the glued sensor mat can partially
detach from the foam part over longer periods of time. This does not constitute a material defect and
will have no influence on the quality of the sensor mat.
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Overview of padding
If the sensor mat has come loose as shown in the picture, then the sensor mat must be pressed back in
place before installation as shown in pictures A, B, C.
Complete adhesive strength is only achieved after attaching or clamping the seat cover.
Required tools
Information
Purchasing the "AMA2 ReProgramming Tool" programming box
A special programming box is required to program the occupant classification control unit with the
software required for the padding including sensor mat. This programming box, including its wiring
harness, can be obtained from the online shop of TKR Automotive GmbH.
One programming box is provided for each affected Porsche dealer. Only one programming boxmay
therefore be ordered for each affected Porsche dealer.
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The link for the online shop is:
http://www.tkr-connector.com
For more information about using the online shop, see:
https://ppn.porsche.com/portal/community/porsche_cars_north_america/after_sales/service/specialtools-and-equipment/blog/2021/09/22/ama2-recallcampaign-ordering-the-tkr-programming-box.
TKR Automotive GmbH online shop
There are various search functions to help you identify
the "AMA2 ReProgramming Tool for Occupant"
programming box, e.g. by entering the campaign number
or using a graphic search function.
The programming box consists of two components:
•
Item 1. Programming Box
•
Item 2. Cable set with connections to cigarette
lighter and control unit
Please read the following information about processing
the campaign:
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Page 4 of 18
•
If the programming box was ordered on account, the
invoice to TKR Automotive GmbH must be paid within
the 14-day payment period.
•
The programming box must only be invoiced once
for the first vehicle during warranty processing at
AMA2 programming box
each Porsche dealer. Only the required materials
and working time must be invoiced in the campaign claim for the remaining vehicles on which work
is carried out as part of this campaign at the Porsche dealer.
•
For warranty processing, the Part No. AMA20000002 with the "programming box" designation
can be invoiced as an additional part in the warranty claim. Cost: $1,785.
•
The shipping costs must only be invoiced once for the first vehicle during warranty processing by
specifying Part No. AMA20000003 with the designation "Shipping costs" as an additional part
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and using the amount as per invoice. For all other vehicles, only the materials and working time must
be invoiced in the warranty claim.
Tools:
•
Document a copy of the invoice in the warranty claim.
•
Battery charger with a current rating of at least 90 A and - if required - also with a current and
voltage-controlled charge map for lithium starter batteries, e.g. VAS 5908 Battery charger,
90 A
9900 - PIWIS Tester 3
VAS 6095A Engine and gearbox bracket
VAS 6136 Seat repair stand
VAG 1634B Cushion clip pliers
Torque wrench 2 - 10 Nm (1.5 - 7.5 ftlb.), e.g. VAG 1783 torque wrench, 2 - 10 Nm (1.5 - 7.5
ftlb.)
Torque wrench, 6-50 Nm (4.5-37 ftlb.), e.g. VAG 1331A Torque wrench, 6-50 Nm (4.5-37 ftlb.)
"AMA2 ReProgramming Tool for Occupant" programming box
•
•
•
•
•
•
•
Replacing seat occupancy detection system for passenger seat
Overview:
Installation position of seat occupancy detection system for passenger seat
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Work
Procedure:
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Preparatory work
1
Create vehicle analysis log (VAL) using the PIWIS Tester. Mark the vehicle analysis log you have just
created with the attribute "Pre-VAL" and after carrying out the campaign, return it using the PIWIS
Tester.
2
Remove passenger seat.  Workshop Manual '720119 Removing and installing front seat'
3
Remove padding for front seat  Workshop Manual '741019 Removing and installing padding for
front seat'.
Replacing seat occupancy detection system for passenger seat
4
Replace padding for front seat including sensor mat.  Workshop Manual '741055 Replacing
padding for front seat'
Information
Information: Incorrectly installed electrical connectors and falsely inserted metal fastening clips for
the leather seat can also cause programming and calibration errors.
5
Replace occupant detection control unit.  Workshop Manual '696819 Removing and installing
occupant detection control unit'
Concluding work
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6
Install padding for front seat.  Workshop Manual '741019 Removing and installing padding for
front seat'
7
Install the passenger seat and reprogram the control unit for occupant detection using the
programming box.
7.1
Remove the passenger seat from the mounting device and position it in the vehicle.
7.2
Connect connectors for passenger seat.  Workshop Manual '720119 Removing and
installing front seat'
7.3
Connect the battery.  Workshop Manual '2X00IN Work instructions after disconnecting the
battery'.
7.4
Adjust the passenger seat so that the electrical plug connection is accessible to the
occupant detection control unit.
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7.5
Unlock the secondary locking of the plug
connection  Re-programming control
unit -1- on the occupant detection control
unit  Re-programming control unit -2- (
Re-programming control unit -arrow A-) and
unplug the plug  Re-programming control
unit -arrow B-.
7.6
Connect the cable set for the programming
box to the occupant detection control unit and
to the cigarette lighter in the centre console.
7.7
Switch on the ignition and reprogram the
occupant detection control unit in the
vehicle according to the instructions on the
programming box.
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Re-programming control unit
Re-programming control unit
1
2
– Start button
– LED display
Information
Information: If the green LED does not appear, then the data set can be checked for confirmation via the PIWIS Tester or the VALs. (See step 7.11) This step is only carried out after the
occupant detection control unit has been reprogrammed.
7.8
After programming, switch off the ignition and disconnect the programming box.
7.9
Plug in the plug connection on the occupant detection control unit and close the secondary
lock on the plug.
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7.10
Fully install the passenger seat.  Workshop Manual '720119 Removing and installing front
seat'
7.11
For specific information on control unit programming in this step, see the table below.
Airbag → Coding
‘Seat occupancy detection control unit, data record identifier’*
Current Versions
Target Versions
A03/A04
A05
A53/A54
A55
B53/B54
B55
B03/B04
B05
K03/K04
K05
K53/K54
K55
S03/S04
S05
G03
G04
G53
G54
S32
S33
S53/S54
S55
*The vehicle will only have one of the possible versions listed.
Control unit for seat occupancy detection - passenger side → ECU information
Label Description
Current Version
Target Version**
‘Occupant detection'
5C6959339B
5C6959339C
‘Occupant detection:
software version'
0046
0047
‘Occupant detection: Part
number'
5C6959339C
5C6959339C
**Target version for all vehicles is the same, regardless of equipment or options
8
Re-calibrate occupant detection control unit.
For instructions, see:  Workshop Manual '696855 Replacing occupant detection control unit'.
Information
If reprogramming of the occupant detection control unit passes (refer to Step 7.11) but the
recalibration of the occupation control unit fails, it is recommended to replace the ‘seat occupancy
detection repair kit’ (sensor mat only).
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On vehicles with seat memory on passenger's side, perform standardization for seat motors.
For instructions, see:  Workshop Manual '729355 Replacing control unit for memory seat
adjustment'.
10 Create vehicle analysis log (VAL) using the PIWIS Tester. Mark the vehicle analysis log you have just
created with the attribute "Final VAL" and after carrying out the campaign, return it using the PIWIS
Tester.
11 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 catalog of operations contained in PIWIS.
Scope 1-11:
Only relevant for vehicles outside the USA/Canada – see relevant Technical Information for
these vehicle types.
Scope 12:
Vehicles with basic seat (Alcantara) without seat heating
Working time:
Replacing seat occupancy detection system for passenger seat
Includes:
Disconnecting and connecting battery
Removing and installing passenger seat
Removing and installing trim panel for seat
Removing and installing cover for backrest
Removing and installing padding for front seat
Replacing padding for front seat
Connecting and disconnecting PIWIS Tester
Re-calibrating occupant detection control unit
Standardizing control unit for seat memory
Reading out and erasing fault memories
Creating Vehicle Analysis Logs (VAL) before and after the
campaign
Labor time: 203 TU
Parts required:
V04015256BG
Seat occupancy detection repair kit
1 ea.
PAF911475
Fastening screws
4 ea.
V04015261AA
Fastening clips
15 ea.
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PAF038501
Expansion rivet
2 ea.
AMA20000001*
Tie-wrap, approx. 3.0 mm/ 0.12 in/ 0.12 in wide
e.g. tie-wrap, Part No. 99951307540
1 ea.
(for warranty
invoicing only)
AMA20000002**
Programming box
1 ea.
(for warranty
invoicing only)
AMA20000003***
Shipping costs
1 ea.
(for warranty
invoicing only)
Required tools:
* For warranty invoicing for Part No. AMA20000001, enter "expendable items" designation as sublet
item & additional measures Cost: $1.88.
**The programming box must only be invoiced once for the first vehicle during warranty
processing at each Porsche dealer. For warranty processing, the Part No. AMA20000002 with the
"programming box" designation can be invoiced as an additional part in the warranty claim. Cost:
$1,785.
*** The shipping costs must only be invoiced once for the first vehicle during warranty processing
by specifying Part No. AMA20000003 with the designation "Shipping costs" as an additional
part and using the amount as per invoice. Please document a copy of the invoice for this in
the warranty claim. For all other vehicles, only the part and working time must be invoiced in the
warranty claim.
 Damage Code AMA2 099 000 2
Scope 13:
Vehicles with comfort seat and seat heating
Working time:
Replacing seat occupancy detection system for passenger seat
Includes:
Disconnecting and connecting battery
Removing and installing passenger seat
Removing and installing trim panel for seat
Removing and installing cover for backrest
Removing and installing padding for front seat
Replacing padding for front seat
Connecting and disconnecting PIWIS Tester
Re-calibrating occupant detection control unit
Standardizing control unit for seat memory
Reading out and erasing fault memories
Nov 24, 2021
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AfterSales
Labor time: 231 TU
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Creating Vehicle Analysis Logs (VAL) before and after the
campaign
Parts required:
V04015256BI
Seat occupancy detection repair kit
1 ea.
PAF911475
Fastening screws
4 ea.
V04015261AA
Fastening clips
15 ea.
PAF038501
Expansion rivet
2 ea.
AMA20000001*
Tie-wrap, approx. 3.0 mm/ 0.12 in wide
e.g. tie-wrap, Part No. 99951307540
1 ea.
(for warranty
invoicing only)
AMA20000002**
Programming box
1 ea.
(for warranty
invoicing only)
AMA20000003***
Shipping costs
1 ea.
(for warranty
invoicing only)
Required tools:
* For warranty invoicing for Part No. AMA20000001, enter "expendable items" designation as sublet
item & additional measures Cost: $1.88.
**The programming box must only be invoiced once for the first vehicle during warranty
processing at each Porsche dealer. For warranty processing, the Part No. AMA20000002 with the
"programming box" designation can be invoiced as an additional part in the warranty claim. Cost:
$1,785.
*** The shipping costs must only be invoiced once for the first vehicle during warranty processing
by specifying Part No. AMA20000003 with the designation "Shipping costs" as an additional
part and using the amount as per invoice. Please document a copy of the invoice for this in
the warranty claim. For all other vehicles, only the part and working time must be invoiced in the
warranty claim.
 Damage Code AMA2 099 000 2
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Scope 14:
ENU
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50/21
Vehicles with comfort seat and seat heating/seat ventilation
Working time:
Replacing seat occupancy detection system for passenger seat
Includes:
Disconnecting and connecting battery
Removing and installing passenger seat
Removing and installing trim panel for seat
Removing and installing cover for backrest
Removing and installing padding for front seat
Replacing padding for front seat
Connecting and disconnecting PIWIS Tester
Re-calibrating occupant detection control unit
Standardizing control unit for seat memory
Reading out and erasing fault memories
Creating Vehicle Analysis Logs (VAL) before and after the
campaign
Labor time: 231 TU
Parts required:
V04015256BK
Seat occupancy detection repair kit
1 ea.
PAF911475
Fastening screws
4 ea.
V04015261AA
Fastening clips
15 ea.
PAF038501
Expansion rivet
2 ea.
AMA20000001*
Tie-wrap, approx. 3.0 mm/ 0.12 in wide
e.g. tie-wrap, Part No. 99951307540
1 ea.
(for warranty
invoicing only)
AMA20000002**
Programming box
1 ea.
(for warranty
invoicing only)
AMA20000003***
Shipping costs
1 ea.
(for warranty
invoicing only)
Required tools:
* For warranty invoicing for Part No. AMA20000001, enter "expendable items" designation as sublet
item & additional measures Cost: $1.88.
**The programming box must only be invoiced once for the first vehicle during warranty
processing at each Porsche dealer. For warranty processing, the Part No. AMA20000002 with the
"programming box" designation can be invoiced as an additional part in the warranty claim. Cost:
$1,785.
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*** The shipping costs must only be invoiced once for the first vehicle during warranty processing
by specifying Part No. AMA20000003 with the designation "Shipping costs" as an additional
part and using the amount as per invoice. Please document a copy of the invoice for this in
the warranty claim. For all other vehicles, only the part and working time must be invoiced in the
warranty claim.
 Damage Code AMA2 099 000 2
Scope 15:
Vehicles with 18-way sports seat (Alcantara or leather) and seat heating
Working time:
Replacing seat occupancy detection system for passenger seat
Includes:
Disconnecting and connecting battery
Removing and installing passenger seat
Removing and installing trim panel for seat
Removing and installing cover for backrest
Removing and installing padding for front seat
Replacing padding for front seat
Connecting and disconnecting PIWIS Tester
Re-calibrating occupant detection control unit
Standardizing control unit for seat memory
Reading out and erasing fault memories
Creating Vehicle Analysis Logs (VAL) before and after the
campaign
Labor time: 231 TU
Parts required:
V04015256A
Seat occupancy detection repair kit
1 ea.
PAF911475
Fastening screws
4 ea.
V04015261AA
Fastening clips
22 ea.
PAF038501
Expansion rivet
2 ea.
AMA20000001*
Tie-wrap, approx. 3.0 mm/ 0.12 in wide
e.g. tie-wrap, Part No. 99951307540
1 ea.
(for warranty
invoicing only)
AMA20000002**
Programming box
1 ea.
(for warranty
invoicing only)
AMA20000003***
Shipping costs
1 ea.
(for warranty
invoicing only)
Required tools:
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* For warranty invoicing for Part No. AMA20000001, enter "expendable items" designation as sublet
item & additional measures Cost: $1.88.
**The programming box must only be invoiced once for the first vehicle during warranty
processing at each Porsche dealer. For warranty processing, the Part No. AMA20000002 with the
"programming box" designation can be invoiced as an additional part in the warranty claim. Cost:
$1,785.
*** The shipping costs must only be invoiced once for the first vehicle during warranty processing
by specifying Part No. AMA20000003 with the designation "Shipping costs" as an additional
part and using the amount as per invoice. Please document a copy of the invoice for this in
the warranty claim. For all other vehicles, only the part and working time must be invoiced in the
warranty claim.
 Damage Code AMA2 099 000 2
Scope 16:
Vehicles with 18-way sports seat and seat heating/seat ventilation
Working time:
Replacing seat occupancy detection system for passenger seat
Includes:
Disconnecting and connecting battery
Removing and installing passenger seat
Removing and installing trim panel for seat
Removing and installing cover for backrest
Removing and installing padding for front seat
Replacing padding for front seat
Connecting and disconnecting PIWIS Tester
Re-calibrating occupant detection control unit
Standardizing control unit for seat memory
Reading out and erasing fault memories
Creating Vehicle Analysis Logs (VAL) before and after the
campaign
Labor time: 231 TU
Parts required:
V04015256BL
Seat occupancy detection repair kit
1 ea.
PAF911475
Fastening screws
4 ea.
V04015261AA
Fastening clips
22 ea.
PAF038501
Expansion rivet
2 ea.
AMA20000001
Tie-wrap, approx. 3.0 mm/ 0.12 in wide
e.g. tie-wrap, Part No. 99951307540
1 ea.
(for warranty
invoicing only)*
Required tools:
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AMA20000002**
Programming box
1 ea.
(for warranty
invoicing only)
AMA20000003***
Shipping costs
1 ea.
(for warranty
invoicing only)
6
* For warranty invoicing for Part No. AMA20000001, enter "expendable items" designation as sublet
item & additional measures Cost: $1.88.
**The programming box must only be invoiced once for the first vehicle during warranty
processing at each Porsche dealer. For warranty processing, the Part No. AMA20000002 with the
"programming box" designation can be invoiced as an additional part in the warranty claim. Cost:
$1,785.
*** The shipping costs must only be invoiced once for the first vehicle during warranty processing
by specifying Part No. AMA20000003 with the designation "Shipping costs" as an additional
part and using the amount as per invoice. Please document a copy of the invoice for this in
the warranty claim. For all other vehicles, only the part and working time must be invoiced in the
warranty claim.
 Damage Code AMA2 099 000 2
Scope 17:
Vehicles with 8-way sports seat GTS (Alcantara or leather) and seat heating
Working time:
Replacing seat occupancy detection system for passenger seat
Includes:
Disconnecting and connecting battery
Removing and installing passenger seat
Removing and installing trim panel for seat
Removing and installing cover for backrest
Removing and installing padding for front seat
Replacing padding for front seat
Connecting and disconnecting PIWIS Tester
Re-calibrating occupant detection control unit
Standardizing control unit for seat memory
Reading out and erasing fault memories
Creating Vehicle Analysis Logs (VAL) before and after the
campaign
Labor time: 231 TU
Parts required:
V04015256AR
Seat occupancy detection repair kit
1 ea.
PAF911475
Fastening screws
4 ea.
V04015261AA
Fastening clips
22 ea.
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PAF038501
Expansion rivet
2 ea.
AMA20000001*
Tie-wrap, approx. 3.0 mm/ 0.12 in wide
e.g. tie-wrap, Part No. 99951307540
1 ea.
(for warranty
invoicing only)
AMA20000002**
Programming box
1 ea.
(for warranty
invoicing only)
AMA20000003***
Shipping costs
1 ea.
(for warranty
invoicing only)
Required tools:
* For warranty invoicing for Part No. AMA20000001, enter "expendable items" designation as sublet
item & additional measures Cost: $1.88.
**The programming box must only be invoiced once for the first vehicle during warranty
processing at each Porsche dealer. For warranty processing, the Part No. AMA20000002 with the
"programming box" designation can be invoiced as an additional part in the warranty claim. Cost:
$1,785.
*** The shipping costs must only be invoiced once for the first vehicle during warranty processing
by specifying Part No. AMA20000003 with the designation "Shipping costs" as an additional
part and using the amount as per invoice. Please document a copy of the invoice for this in
the warranty claim. For all other vehicles, only the part and working time must be invoiced in the
warranty claim.
 Damage Code AMA2 099 000 2
Scope 18:
Vehicles with standard seat (Alcantara, partial leather or leather) and seat heating
Working time:
Replacing seat occupancy detection system for passenger seat
Includes:
Disconnecting and connecting battery
Removing and installing passenger seat
Removing and installing trim panel for seat
Removing and installing cover for backrest
Removing and installing padding for front seat
Replacing padding for front seat
Connecting and disconnecting PIWIS Tester
Re-calibrating occupant detection control unit
Standardizing control unit for seat memory
Reading out and erasing fault memories
Nov 24, 2021
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Labor time: 203 TU
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Creating Vehicle Analysis Logs (VAL) before and after the
campaign
Parts required:
V04015256BM
Seat occupancy detection repair kit
1 ea.
PAF911475
Fastening screws
4 ea.
V04015261AA
Fastening clips
15 ea.
PAF038501
Expansion rivet
2 ea.
AMA20000001
Tie-wrap, approx. 3.0 mm/ 0.12 in wide
e.g. tie-wrap, Part No. 99951307540
1 ea.
(for warranty
invoicing only)*
AMA20000002**
Programming box
1 ea.
(for warranty
invoicing only)
AMA20000003***
Shipping costs
1 ea.
(for warranty
invoicing only)
Required tools:
* For warranty invoicing for Part No. AMA20000001, enter "expendable items" designation as sublet
item & additional measures Cost: $1.88.
**The programming box must only be invoiced once for the first vehicle during warranty
processing at each Porsche dealer. For warranty processing, the Part No. AMA20000002 with the
"programming box" designation can be invoiced as an additional part in the warranty claim. Cost:
$1,785.
*** The shipping costs must only be invoiced once for the first vehicle during warranty processing
by specifying Part No. AMA20000003 with the designation "Shipping costs" as an additional
part and using the amount as per invoice. Please document a copy of the invoice for this in
the warranty claim. For all other vehicles, only the part and working time must be invoiced in the
warranty claim.
 Damage Code AMA2 099 000 2
Additional instructions if programming is aborted
If individual programming steps or subsequent work could not be carried out correctly, see Workshop
Manual for the basic procedure for control unit programming using the PIWIS Tester Workshop Manual
'9X00IN Basic instructions and procedure for control unit programming using the PIWIS Tester - section
on "Fault finding"'. : You will also find further information and instructions specifically for the programming
and calibration procedures in the fault-tree diagram below:
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Troubleshooting process AMA2
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.
© 2021 Porsche Cars North America, Inc.
Nov 24, 2021
Page 18 of 18
AfterSales