0

Bulletin #: 2512

Advanced Technical Information

Part ID: 0335

Macan Electric – General Troubleshooting
Vehicles Affected
Models

Model Year

Model Type

VIN Range

Vehicle-Specific Equipment

Macan Electric

As of 2024

XAB

N/A

N/A

Revision History
Revision

Release Date

Changes

0

May 12, 2025

Original document

Condition
The following document aims to assist Porsche Dealership service and support personnel with diagnosis of select
conditions or apparent failures. This document will be updated and re-published when new information becomes
available.

Technical Background
Self-diagnosis and monitoring routines within the PIWIS Tester, the vehicle, vehicle systems, and control units can
result in erroneous Fault Codes, DTCs, or warnings.

Service Information
Diagnostic Tip #1
Upon diagnosis, the technician finds numerous fault codes (more fault codes than can be clearly interpreted to aid
diagnosis; e.g., 175 faults / 400 faults / 1045 faults...). This situation may arise due to vehicle network communication errors for any number of reasons. For example, an HCP controller or an individual control unit went into an
error state and did not or could not reply to network messages.
If there are numerous faults for HCP communication errors, the following function will clear outstanding HCP
communication jobs:
•
Diagnostics --> Additional Menu [F7] --> Special Functions --> “HCPX_CLEANUP_H2”

AfterSales

May 12, 2025
Page 1 of 7

0

Bulletin #: 2512

Advanced Technical Information

Part ID: 0335

If previous network communication errors caused faults for Vehicle Key Management System (VKMS), the following
function will ensure all relevant ECUs contain the correct VKMS authorization:
•
Diagnostics --> Additional Menu [F7] --> VKMS Learning / Teach In

Follow instructions on the tester

It is recommended to bypass the key programming procedure with [F12], if possible
If previous communication errors caused faults for the Combination Sensor (X/Y/Z-axis fault; Yaw/Rotation sensor
fault), the following function will ensure combination-sensor-relevant functions can perform as designed in all
relevant ECUs:
•
Diagnostics --> Airbag CU (J234) --> Maintenance/Repairs --> Teach Combination Sensor
Communication errors can often lead to a loss of vehicle localization. The exact location of the vehicle is critical to
management of functions provided both onboard and via online services. If the vehicle and vehicle ECUs don’t have
an accurate vehicle location, then they will not authorize and enable location-specific vehicle functions or services.
Best practice is to establish vehicle location via existing onboard systems:
•
Verify settings to ensure Date and Time and GPS are automatically set via PCM central display Settings -->

System --> Date and Time
•
Drive on a mapped street to ensure the GPS position and therefore time is automatically set

Driving in a Porsche Center parking lot or simply activating driving readiness in the Porsche Center
is insufficient
If the Date and Time settings are greyed out, or the time does not set automatically despite adequate vehicle use on
a mapped street, then it may be necessary to reset the PCM to factory settings.
If the vehicle cannot be moved (e.g., it is disabled for ongoing repairs), the Time can be set manually in the Main
Control Unit for Gateway HCP5 (J1273).
•
Diagnostics --> Main Control Unit for Gateway HCP5 (J1273) --> Maintenance/Repairs --> Set time
FYI
•
•
•
•

The HCP3 (Central Computer / PCM) receives the Time & GPS from the HCP5 (Gateway)
The GPS location is retained in the Connect Control Unit / External Communications Control Unit (J949)
The primary timekeeper in the vehicle is the HCP5 (Gateway)
The Time Zone is calculated in the vehicle through combination of the GPS Location and the Time

Calibration of Advanced Driver Assistance System (ADAS) control units can also be performed on a road test:
•
Front Camera
•
ACC
•
Front Radar
•
Rear Radar

AfterSales

May 12, 2025
Page 2 of 7

Bulletin #: 2512

Advanced Technical Information

Part ID: 0335

0

During the test drive, verify the vehicle has data connectivity via a green SOS light in the overhead console, and
continue to verify vehicle location is accurate by the correct Date & Time shown in the Instrument Cluster and PCM
Central Display.
Following execution of any functions described above, it is recommended to clear subsequent fault codes and end
the current diagnostic session with the PIWIS Tester.
Wait for the PT4G and the “on-board diagnostic tester” to close current diagnostic session, then remove the VCI and
perform a driving readiness Off / On (Key Cycle) before further work is performed.
In some cases, a 30 minute bus/network sleep cycle (park & lock vehicle; move key >10 meters away from vehicle)
is necessary to ensure all relevant functions are restored to operation.
When all mentioned issues are addressed (HCPx communication jobs are resolved; VKMS is taught; Combination
sensor is calibrated; vehicle is localized; date & time are verified; ADAS systems are calibrated; vehicle sleep cycle is
completed) and erroneous fault codes are cleared, a new Vehicle Analysis Log (VAL) should be generated and
diagnosis of the customer complaint or vehicle issue can continue.
Diagnostic Tip #2
During a test drive, technicians find the Lane Change Assist (LCA) function does not work, and the blind spot
indicator lights in the exterior mirrors do not light up.
This can occur if 12V power was disconnected and reconnected, and the position of folding side mirrors is lost.
The basic positions of the exterior mirrors must be taught by folding the mirrors in and back out again (similar to
teaching window end-stops following a power loss). The LCA function will work again after the door control units
store the exterior mirror positions.

AfterSales

May 12, 2025
Page 3 of 7

Bulletin #: 2512

Advanced Technical Information

Part ID: 0335

0

Diagnostic Tip #3
A drive cycle starts once the car is shifted into drive and ends when the ignition is switched off.
Putting the car in park or neutral does not end the drive cycle. Therefore, the ignition should be switched off before
starting any fault diagnosis.
When the ignition is not switched off first, faults will not be able to be fully cleared and will return after FML deletion.
Also, various control units will show “Coding signing error” when trying to run an integration test.

AfterSales

May 12, 2025
Page 4 of 7

Bulletin #: 2512

Advanced Technical Information

Part ID: 0335

0

Diagnostic Tip #4
There are 3 different ways to run an integration test using the PIWIS Tester
1)
Integration Test (F3)
2)
Additional Menu (F7) -> Programming and coding control units (campaign)
3)
“Coding programming” Tab with specific control unit(s) selected in the “Overview” Tab
When checking if any integration tests are available for a given vehicle, it is recommended to use option 2 –
Additional Menu (F7) -> Programming and coding control units (campaign).
This is due to the fact that when selecting “Integration Test (F3)” the tester may show that “all control units in
required status” when this may not be the case.

AfterSales

May 12, 2025
Page 5 of 7

Bulletin #: 2512

Advanced Technical Information

Part ID: 0335

0

When selecting Additional Menu (F7) -> Programming and coding control units (campaign) on the same vehicle, it
will then reveal that programming is possible for certain control units if available.

AfterSales

May 12, 2025
Page 6 of 7

Bulletin #: 2512

Advanced Technical Information

Part ID: 0335

0

Note:
When using Additional Menu (F7) -> Programming and coding control units (campaign), pay close attention to the
wording at the top of the screen. Control units with “Necessary actions” are not automatically filtered to the top of
the page. Therefore, at first look it may seem that all control units are in the required status as all of the shown
control units may have green check marks. If the text at the top of the screen indicates “Test shows deviations”, it
will be necessary to scroll down to find the control units that require necessary actions.

If there are software campaigns available for a specific VIN, the campaign TI will include instructions to
perform the campaign using Additional Menu (F7) -> Programming and coding control units (campaign).
For further instructions on general control unit programming, reference Work Manual, 9X10IN.
Search Items
Macan, H2, Macan BEV, Troubleshooting, High fault Count, LCA, Lane Change Assist, Drive Cycle, Integration Test,
Campaign

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.

©2025 Porsche Cars North America, Inc.

AfterSales

May 12, 2025
Page 7 of 7