No. 2222.1

Bulletin #: 2222.1
Advanced Technical Information
Part ID: 3965
3
95B.III – 2022 Macan Transfer Box Shudder/Jerk at Slower Speeds
Vehicles Affected
Models
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Macan
2022
95B
n/a
All
Revision History
Revision
Release Date
Changes
0
July 29, 2022
Original document
1
November 30, 2022
Updated Condition, Technical Background, and Software Information
Condition
Customer uses adjectives like shuddering, jerking, jolting, lurching,
lunging or similar to describe the behavior of the vehicle’s drivetrain
at lower speeds. Particularly, this occurs while driving in 1st or 2nd
gear in the transmission’s automatic mode with some slight brake
application in combination with a greater steering angle input (at or
close to ‘full-lock’), travelling between 6-10 mph, e.g. while negotiating
a parking space or lot. The condition happens in reverse too, and can
be disconcerting. There are no fault memory occurrences associated
with the behavior described herein.
In some cases, customers may also complain of clicking or clunking
noises from the front under similar operating conditions.
Figure 1- Driveshaft detached from
splines at outer joint
Technical Background
A software issue in the All-wheel drive (transfer box) control unit may allow too much torque to be applied to the 		
front driveshafts while the vehicle is moving at slow speeds (6-10 mph) in combination with a high steering angle.
This sharp torque increase causes the condition described by the customer.
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Bulletin #: 2222.1
Advanced Technical Information
Part ID: 3965
Repeated occurrences of the sharp increase in torque may cause one or both of the driveshafts to detach from the
splines on the wheel hub (outer joint). The separation of the driveshaft from the wheel hub may cause a clicking or 		
clunking noise during low speed maneuvering.
Service Information
ONLY recommended for diagnostic purposes, fixing the degree of locking to a constant between the front and rear
drive shafts from the transfer box serves to eliminate the concern. Disconnecting the electrical plug on the transfer
box serves to fix or lock the torque ratio (diagnostic purposes ONLY).
1.
Please determine if the customer’s complaint is consistent with the description provided in the ‘Condition’
section above, by first operating the vehicle under the described parameters (preferably with the customer).
=>
If this issue is consistent, please operate the vehicle under the same parameters with a fixed or
constant torque lock in the transfer box, which is possible by disconnecting the electrical plug to
the transfer box.
2.
Visually inspect both front driveshafts for excessive play. If either of the driveshafts are detached from the
splines in the wheel hub, please replace the detached front driveshaft(s) as instructed in WM 404119 –
Removing and installing the front drive shaft.
3.
Read out the current software version and Porsche part number of the transfer box (All-wheel drive) with
the PIWIS Tester. If the software version and Porsche part number match the “Original” column in Table 1
below, please program the transfer box control unit (All-wheel drive):
=>
Please ensure your PIWIS Tester is updated to version 41.400.060 or later.
=>
Create a Before VAL to document the current software version and Porsche part number of the All-		
wheel drive control unit.
			
=>
Perform Automatic Programming of the All-wheel drive control unit.
All-wheel drive --> Coding/programming --> Automatic programming
4.
Read out the updated software version and Porsche part number. Create an After VAL to document any soft		
ware or Porsche part number changes. The target software version and corresponding Porsche part number
is given in the table below.
Model
Macan, Macan T,
Macan S, Macan GTS
Control Unit
All-wheel drive
Original SW Level
Target SW Level
Original Porsche Part
Number
Target Porsche Part
Number
0700
0900
95B927755GE
95B927755GF
Table 1 - Target Software Levels and Porsche Part Numbers for All-wheel drive control unit
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Nov 30, 2022
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Bulletin #: 2222.1
Advanced Technical Information
Part ID: 3965
3
Warranty
As always, please document the repair completely in PQIS.
For this repair, please code the “cause” as follows:
Cause location:
3965 Transfer box
Cause symptom:
1126 Jerky gear change
Use the following troubleshooting labor operations:
03350050		
Fault memory read-out
03350053		
Creation of the VAL
39132550		
Transfer gear control unit program (Composite work)
39650199		
Unplug transfer box and test-drive
51921900		
Cover front remove and reinstall
The following labor operations may be claimed only as needed:
40411901		
Front drive shaft remove and reinstall (Main work) – left
40411902		
Front drive shaft remove and reinstall (Main work) – right
Additional labor operations may be claimed only as needed.
Search Items
Macan, 95B, driveshaft, transfer case, transfer box, shuddering, jerking, jolting, lurching, transmission
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.
F15789/F16193
©2022 Porsche Cars North America, Inc.
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