NHTSA ID Number: 10199825
Manufacturer Communication Number: No. 106-21-1
TSB/Document Date: 2021-08-04
Summary
Porsche
recall campaign information for Recall Campaign AMB5 - Re-Programming Power Electronics.
Service
Technical Information
106/21 ENU
AMB5
9
AMB5 - Re-Programming Power Electronics (Stop Delivery/Recall Campaign)
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 Year:
2021
Model Line:
Taycan (Y1A)
Taycan Cross Turismo (Y1B)
Concerns:
Power electronics and engine electronics (DME)
Information:
Due to an internal software error in the high-voltage power electronics, there is a possibility
that the warning message "Drive system control fault Park vehicle safety" will be displayed in
the instrument cluster on the affected vehicles.
If this is the case, the possibility of the drive system switching off sporadically while driving cannot be
ruled out and it may be necessary to park the vehicle safely. The customer can start the vehicle again
after switching the ignition off and on again.
Action required: •
•
Re-program the power electronics and engine electronics (DME control unit) using the PIWIS Tester
with test software version 40.350.035 (or higher) installed.
Depending on the software version of the individual control units installed in the vehicle, other control
units must also be re-programmed or coded.
Information
Each vehicle affected by this measure has been assigned exactly one scope, which includes the
measures required for updating the software.
For details of the exact scope of this campaign that is assigned to each vehicle, see PCSS Vehicle Information.
An overview of the corresponding action required for each scope can be found in the table below.
AfterSales
Jul 14, 2021
Page 1 of 28
9
Service
Technical Information
ENU 106/21
AMB5
Overview of scopes:
Affected
Vehicles:
Allocation
Scope of work for control unit programming
Scope 1:
•
•
•
•
VR8.6
VR8.7
VR12.1.1
Power electronics
Scope 2:
•
•
•
VR8.7
VR12.1.1
Power electronics
Scope 3:
•
•
VR12.1.1 - Model year 2020 vehicles
Power electronics
Scope 4:
•
•
VR12.1.1 - Model year 2021 vehicles
Power electronics
Scope 5:
•
Power electronics
Only vehicles assigned to the campaign (see also PCSS Vehicle Information).
Required tools
Information
The Taycan (Y1A/Y1B) is equipped as standard with a lithium starter battery.
Lithium starter batteries must only be charged using a suitable battery charger that has a current
and voltage-controlled charge map.
For further information about the battery chargers to be used, see Workshop Manual '270689
Charging battery/vehicle electrical system'.
Tools:
•
•
•
Jul 14, 2021
Page 2 of 28
Battery charger with a current rating of at least 90 A and also with a current and voltagecontrolled charge map for lithium starter batteries, e.g. VAS 5908 battery charger 90 A
9900 - PIWIS Tester 3 with test software version 40.350.035 (or higher) installed.
USB storage medium, type A+C 32 GB (for PCM update), Part No. V04014999WW000
AfterSales
Service
Technical Information
106/21 ENU
AMB5
9
Information
The central computer (PCM) software update is performed using a USB storage medium. The software
version that is specific to each region must be downloaded using the software tool PiUS (Porsche integrated Update Service) and installed on a blank USB storage medium.
Pay particular attention to the following:
•
For this PCM software update, the USB storage medium USB Type A+C 32 GB with the part number
V04014999WW000 must be used.
•
To use the software tool, one blank or re-writable USB storage medium is required for each individual software.
•
The software available in PiUS must only be used in accordance with the instructions provided in a
Technical Information published for this purpose.
The software mentioned here must only be used on the vehicles assigned to the campaign. Damage
to the central computer cannot be ruled out if the software is used on other vehicles.
You will find further information on how to install and use the PiUS software tool in the PPN portal under
*PiUS (Porsche integrated Update Service) goes live*.
Overview of PiUS software versions – PCM update VR12.1.1
Part No.
Designation
– Region
Vehicle allocation
9J1919360C
PCM update software
– Europe
– RoW
I-no. ER1/ER2
9J1919360D
PCM update software
– North America
– Mexico
I-no. ER3/ER4
9J1919360E
PCM software update
– Japan
– China
– Korea
– Taiwan
I-no. ER5/ER6/ER7/ER8
Preparatory work - all scopes
NOTICE
Fault entry in the fault memory and control unit programming aborted due to undervoltage.
•
Increased current draw during diagnosis or control unit programming can cause a drop in voltage, which
can result in one or more fault entries and the abnormal termination of the programming process.
Before starting control unit programming, connect a suitable battery charger with a current rating of at
least 90 A to the vehicle.
AfterSales
Jul 14, 2021
Page 3 of 28
9
Service
AMB5
Technical Information
ENU 106/21
NOTICE
Control unit programming will be aborted if the WiFi connection is unstable.
•
An unstable WiFi connection can interrupt communication between the PIWIS Tester and the vehicle
communication module (VCI). As a result, control unit programming may be aborted.
During control unit programming, always connect the PIWIS Tester to the vehicle communication module
(VCI) via the USB cable.
NOTICE
Control unit programming will be aborted if the driver's key is not recognized
•
If the driver's key is not recognized in the vehicle, programming cannot be started or will be interrupted.
Position the driver's key with the back facing forward upright between the holding struts in the rear
cupholder (emergency start tray) to ensure a permanent radio link between the vehicle and remote
control.
NOTICE
Programming interrupted
•
Malfunctions in control unit
•
Risk of damage to control unit
Route the line between the vehicle communication module (VCI) and diagnostic socket on the vehicle
without tension and make sure that the connector is inserted fully into the diagnostic socket.
Check that the rechargeable battery for the PIWIS Tester is charged sufficiently. Connect the PIWIS Tester
to the power supply unit if necessary.
Information
To carry out the campaign, the PIWIS Tester must be online and logged into the Porsche Partner Network
(PPN).
Jul 14, 2021
Page 4 of 28
AfterSales
Service
Technical Information
106/21 ENU
AMB5
9
Information
Use the new PIWIS Tester data cable to carry out the
campaign. The difference between the old PIWIS Tester
data cable -1- and new PIWIS Tester data cable -2data cable is shown in the illustration.
If the connection between the vehicle and PIWIS Tester is
interrupted, check the data cable for the PIWIS Tester for
signs of damage. If the data cable is damaged, it must be
replaced. To do this, follow the instructions in the PPN
for "Returning faulty USB cable caps" (PPN portal > Dr
Ing. h.c. Porsche AG > Aftersales > Workshop > PIWIS >
Documents).
Information
The procedure described here is based on the PIWIS
Tester 3 software version 40.350.035.
The PIWIS Tester instructions take precedence and in the
event of a discrepancy, these are the instructions that
must be followed.
A discrepancy may arise with later software versions for example.
Work Procedure: 1
PIWIS Tester data cable
Connect a suitable battery charger, e.g. Battery charger 90A, to the jump-start terminals in the
luggage compartment and switch it on.
Information
To prevent any excessive and potentially noticeable heating of the charging clamp of the negative
cable while charging the 12-volt vehicle electrical system battery using an external battery charger,
always check the following points:
•
Always connect the charging terminal of the negative cable vertically from above to the ground
point for the external power connection. Make sure that the charging clamp cable is routed
loosely to prevent the charging clamp from tilting sideways at the ground point.
•
When connecting the charging clamp, make sure that it is a sufficient distance away from
peripheral parts (e.g. pneumatic supply line for air-spring strut).
•
Before raising the vehicle using a lifting platform, always disconnect the battery charger
completely from the vehicle in order to prevent the connecting line of the charging terminal from
becoming taut and the charging terminal tipping sideways at the ground point as a result.
AfterSales
Jul 14, 2021
Page 5 of 28
9
Service
Technical Information
ENU 106/21
AMB5
2
Position the driver's key with the back facing
forward upright between the holding struts in the rear
cupholder (emergency start tray) to guarantee a
permanent radio link between the vehicle and remote
control Emergency start tray.
3
Connect 9900 - PIWIS Tester 3 to the vehicle
communication module (VCI) via the USB cable.
Then, connect the communication module to the
vehicle and switch on the PIWIS Tester.
Operate the PIWIS Testervia the power supply
unit due to the long programming time.
Emergency start tray
4
Establish operational readiness (switch on ignition).
5
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.
6
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.
Then, perform the control unit update in accordance with the scope that is uniquely
assigned to the respective vehicle.
For details of the exact scope of this campaign that is assigned to each vehicle, see PCSS Vehicle
Information.
Jul 14, 2021
Page 6 of 28
Allocation
Software release
Action required
Scope 1:
•
•
•
•
VR8.6
VR8.7
VR12.1.1
Power
electronics
Not relevant for this model year.
Scope 2:
•
•
•
VR8.7
VR12.1.1
Power
electronics
Not relevant for this model year.
Scope 3:
•
•
VR12.1.1
Power
electronics
Not relevant for this model year.
AfterSales
Service
Technical Information
Scope 4:
Scope 5:
106/21 ENU
AMB5
9
•
•
VR12.1.1
Power
electronics
Technical Information '270689 Updating software for
•
Power
electronics
Technical Information '270689 Programming power
various control units - Scope 4'
electronics - Scope 5'
Updating software for various control units - Scope 4
WARNING
Electrically moved side windows and rear spoiler
•
Danger of limbs being trapped or severed
•
Risk of damage to components
Do not reach into the danger area.
Keep third parties away from the danger area.
Do not move components or tools into the danger area.
Information
To ensure that no user-specific settings from Cloud-based services (Porsche Connect & My
Porsche) are lost during the update, activate Privacy mode before carrying out the update. When
Privacy mode is activated, communication between the vehicle and the Porsche Connect app and My
Porsche is disabled. No vehicle-specific information is transferred. As a result, settings cannot be
configured on the vehicle using the Porsche Connect app or My Porsche.
When the instrument cluster and central computer are re-programmed, the individual settings
implemented in the vehicle by the customer will be lost and reset to the default values of the country
version that applies to the vehicle.
After carrying out the campaign, please inform customers that personal settings they have implemented
in the instrument cluster and central display of the central computer will have to be set again and provide
them with any help and support they need for setting the relevant options.
This affects the following settings, for example:
•
Individual settings for tubes 1 to 3 of the instrument cluster as well as the extended map view or
reduced view of the instrument cluster
•
Selected functions of individual tubes in the instrument cluster, e.g. auto zoom, 3D map and satellite
map
•
Arrangement of tiles in the home screen and MyScreen on the central display
AfterSales
Jul 14, 2021
Page 7 of 28
9
Service
Technical Information
ENU 106/21
AMB5
Information
The programming sequences used during this campaign include all control units from software release
VR12.1.1. In the programming sequence, the software versions of the individual control units are initially
compared with the required status of software release VR12.1.1. If the actual status already matches,
the programming of the relevant control unit is automatically skipped, and so the scope of the control
units programmed may vary depending on the vehicle.
- 【Looking for More Professional Vehicle Scan...
- 【OE-Level 4 Systems OBD2 Scanner】iCarsoft E...
- 【4 Systems Diagnosis for 10000+ Vehicles】 iCarsoft E...
- 【6 Reset Services】iCarsoft E660 2026 Upgrade Version is...
- 【118+ Real Time Record & Live Graph View】iCarsoft E...
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: No. 106-21-1
Replacement Service Bulletin Number:
MFR Communication Date: 2021-07-14
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- 💯【Conta.ct us for Support Directly】If you met any issues about: Received a registered device/ Language Changing/ Function not Support/ VCI150 Blueto-oth connector malfunction/ Subscription Renewal, please conta.ct us via 📞autelsupply @outlook. com🛣️, we will provide perfect solution for you. ⚠️Note: Autel MK900BT comes with 1-Year Free Software Update, most features will remain active after update subscription expires. 1. For questions regarding updates or need more useful accessories, please conta.ct us via 📞autelsupply @outlook.com🛣️. 2. If the device fails to charge or turn on, please conta.ct us via 📞autelsupply @outlook. com🛣️, we will handle it promptly.
- 🔥🔥🔥【2026 AUTEL FLAGSHIP MK900BT MK900-BT, NEW MODEL OF MK808S MK900 MX900 MK808BT MX808S】2026 newest Autel MK900BT retains all features of MK808S MX900 MX808S MK808Z MK808Z-BT MK808K-BT, while EXTRA added powerful functions (value 2000+ bucks). The Pro-level Autel MK900BT makes a big leaps: 28+➡40+, 50+➡3000+ Active Tests, 2026 NEW✅CAN FD & DOIP protocols ✅Pre&Post diagnostic report ✅WIFI Print ✅Auto VIN&Auto Scan 2.0 ✅Scan VIN/ License ✅Battery Test (Need purcha.se BT506). If found defect or us.ed, please conta-ct 📞autelsupply @outlook. com📞 get perf-ect solut.ion.
- 🚗【3000+ ACTIVE TESTS (50➡3000+), SAME AS MS906 PRO】Differ from MS906BT MS906 MP808 MK808 MX808 MK808BT only 50 tests, Autel scanner MK900BT escaner automotriz professional offers 3000+ active tests, it can send command to ECUs & monitor actuators operation, quickly locating faulty components. Bidirectional scanning takes your diagnostics to the next level with menu lists 3000+ active tests, such as windows, rear mirrors, sunroof, wipers, fuel injector, coolant fans, radiator fan, AC clutch, coolant pump and more. Note: Functions are not available for all vehicles, please send vehicle VIN to us check compatibility.
- 🚗【40+ HOT SERVICES FOR 150 MAKES (28+➡40+)】Full level-up of OBD2 code reader MaxiCOM MK808S MK808 MK808Z MX808 MK808Z-BT with 28 service, Autel scan tool MK900BT/ MK900-BT offers 40+ maintenance service on 150+ brands 10,000 vehicles from 1996-2025-2026. Hottest Services like: Oil Reset, ABS Bleed, SAS Calibration, Injector Coding, SRS, Throttle Reset, Gearbox Reset, Battery Registration etc. Added 12+ advanced resets: rain slash light sensor reset, HVA.C/ SUS calibration etc. Welcome to send Vehicle Make>Model>Year>VIN>Functions you required to 📞autelsupply @ outlook . com📞 check compatibility.
- 🚗【OE ALL SYSTEM DIAGNOSE, AUTO SCAN 2.0: SCAN LICENSE/ AUTO VIN】2026 new release Autel MaxiCOM MK900-BT scan tool embodies all system diagnostic with its 8in display for all vehicles. Like Sna.p-on tools, it can perform ✔Read/Clear Codes✔Displays 5-in-1 Live Data✔Record & Playback Data✔Retrieve Info on all available systems like ABS ECM BCM SRS TCM etc. In addition to Auto VIN technology, Autel MK900BT adds Scan License/ Auto Scan 2.0 to identify vehicle’s VIN/ license, make, year, model, no need manual input; One-click WiFi Printing of Pre&Post comparison diagnostic reports, highlight root causes of problems.
- 【TURN OFF CEL】 This AL319 car scanner diagnostic tool supports Reading and Clearing DTCs, DTC Look Up, displaying Live Data, Freeze Frame & I/M Readiness, view vehicle information, etc., to figure out the root cause of the Check Engine Light (CEL) and turn it off, helping you catch any potential issues early and avoid excessive costs from unnecessary repairs.
- 【EXTENSIVE APPLICATION】 Autel AL319 Compatible with 7 languages (English, French, Spanish, etc.) and various post-1996 OBD II protocol vehicles (Toyota
, Nissan, Honda, Ford, etc.), this OBD II scanner provides accurate and fast diagnosis for worldwide car owners. - 【FOR END USER & DIYERS】 This error code reader AL319 is “plug and play” and comes with an easy interface. Even if you’re not familiar with vehicle repair, you can quickly take control of this obd2 scanner, and get the information you want.
- 【USER-FRIENDLY DESIGN】 This OBD2 scanner and check engine code reader features a patented One-Click I/M Readiness, TFT color display, built-in speaker, LED Indicator etc. The cable is long enough without being too long and getting in the way. No batteries are needed.
- 【HIGH-QUALITY SERVICES】 12 months war.ranty from the date of purchase and lifetime free update are offered by this Automobile OBDII scan tool. Welcome to contact us via Q&A, email, or hotline, and our after-sale-service team for technical support.
- 👨🎓Tips Before Order: 🚩All function are vehicle-specific - send VIN(17 digits)/Make/Model/Year & needed function via 📞auteldirect @ outlook . com📞 to check before order. 🚩Register tool: a) Follow on-screen guide; or b) Register em-ail on Autel we-b, then bind using SN(back of device) + verification code (find in tool settings or con-tact us via above em-ail). MK808BT PRO comes with ✅English, if need Spanish, please s.end device SN to add. ✅1-year war-ranty. ✅$150 worth 1yr fr-ee updates(New users: ignore renewal alerts). ⚠️📢Post-expiry: Most functions remain functional,for exclusions, refer to A+ Tips. ⚠️Fee for FCA AutoAuth Ga.teway(optional): $50/year, charged by AutoAuth,not Autel.
- 【2026 MK808BT PRO: Same as MK900BT, up of MK900 MX900 MK808S MX808S】Why pay more? 2026 MK808BT PRO functions as MK900BT and saves you 100USD. At same c0st, you now get diagnostic 8X faster and sup-port for 150+ models(1996-2026).💡Dramatically Improved: ✔️Faster & Smarter OS: Android 4.4➡ Android 11 ✔️More Services: 28+➡ 40+ ✔️Bidirectional Control: 50+➡ 3,000+ ✔️Enhanced Hardware: 1/32G➡ 4G/64G ✔️2.4GHz➡ 5G Dual WiFi ✔️Working range: 0.9m➡ 10m+ 🔋Battery test is clear on the large 7in display(BT506 required). 🔔Your Autel scanner is shipped brand new. For any issues(used, damaged, incompatible), e-m-a-il 📞auteldirect @ outlook . com📞 for priority resolution.
- 👍【New Next-Level Bidirectional Control, 50➡3000+ Tests, Covers Daily Repairs】Unlike the Autel DS708 DS808 MP808 MK808 and MX808 car diagnostic scanners, which offer only 50 functional tests, the Autel bidirectional scan tool MK808BT PRO is equipped with over 3000 active tests. These tests are widely used on car subsystems to help technicians quickly check if the car's actuators are functioning properly. Such as ABS, windows, rearview mirrors, wipers, sunroofs, fuel injectors, AC clutches, coolant fans, radiator fans, coolant pumps,etc. Tips📢: All functions are vehicle-specific, not universal to all vehicles,pls send VIN to 📞auteldirect @ outlook . com📞check compatibility before order.
- 👍【28+ Hot Services for 150+ Makes】Autel scan tool MK808BT PRO, upgraded with a BT VCI Mini(valued at 120USD), surpasses the old wired OBDII scanner MK808S MK900, by providing a convenient 33ft wireless working range, offering greater freedom and comfort compared to the 3.3ft cable limit of the MK900 MK808S MX808S car scanner. New features include VIN Check across different modules for comparison and 28+ resets, such as injector coding, ABS autobleed, Oil reset, SAS cali.bration, BMS, throttle relearn, suspension adjustments, etc. ⚠️📢Tips: Service functions are vehicle-specific, not universal to all vehicles, pls send VIN to 📞auteldirect @ outlook . com📞check compatibility before order.
- 👍【All Available Module Diagnosis - OE-Level Scanner】The OE versatile OBDII scan tool MK808BT PRO escaner para autos effectively works with all car systems: ABS, ECM, BCM, SRS, TCM,etc. It identifies vehicles via AutoVIN/manual input/select, like S.nap-on tools, it can ✔read/clear 7000+ DTCs, ✔read ECU info, ✔view 5-in-1 live data, ✔perform active tests, and ✔reset services. ✔Reports can be shared via QR-code and printed, working globally and 21+ multilingual. Supports 150+ US/EU/Asian makes, with ongoing updates from 2024 to 2026. ⚠️Note📢: The AutoVIN function usually works for post-2006 cars, depending on if the vehicle's VIN is stored in the ECU. You can always do manual input/select.
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.