122-M4Q2P-09

Service
Technical Information
66/18
ENU
2706
2
Complaint - Battery, Vehicle Electrical System Has Low Battery Voltage: Follow special
instructions (66/18)
Model Line:
Cayenne (9YA)
Model Year:
As of 2018
Subject:
Battery, vehicle electrical system
Information:
Information
In the event of a complaint about low battery voltage in the vehicle electrical system and/or if the
vehicle cannot be started or unlocked, the following instructions must be followed before doing
any other work.
Read out the hardware version from the instrument cluster and life cycle data from the gateway
as described below (under 'Conditions'):
 If the hardware version that is read out = "011" and the life cycle data value is "20" at least
once,
•
a Vehicle Analysis Log (VAL) must be created and attached to the PQIS claim and
•
the work described under 'Action required' must be carried out.
Information
If the instrument cluster is de-energised at a later time (e.g. battery is disconnected; battery
voltage is too low or connector is disconnected from the instrument cluster), this measure must be
repeated.
Conditions:
Read out values from the instrument cluster and gateway:
1.0
Control units
’Overview’
'Instrument cluster'
select
1.1
'Extended
identification'
Read off the value:
'Hardware version'
If value = '011'
1.2
Control units
’Overview’
'Gateway'
select
•F12“
1.3
'Actual values'
'Life cycle data'
select
•F12“
AfterSales
•F12“
AND
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Technical Information
66/18
'Select All'
(or only History
data_68_ECU relevant)
1.4
1.5
•
•
•
•
•
•
Remedial Action: 1
•F12“
Read off values:
•
Tools:
select
History
data_68_ECU_1
History
data_68_ECU_2
History
data_68_ECU_3
History
data_68_ECU_4
History
data_68_ECU_5
If the value = '20' at
least once:
 Carry out the
described measure.
9900 - PIWIS Tester 3 with software version 37.600.010 (or higher) installed
Battery charger with a current rating of at least 90 A. We recommend VAS 5908 - battery
charger 90A, for example
Preliminary work:
NOTICE
Voltage drop
•
Risk of irreparable damage to control unit
•
Risk of damage to control unit
•
Fault entries in the control unit
•
Coding in the control unit is aborted
•
Malfunctions in control unit, even during programming

Before disconnecting the control unit, switch off ignition and remove ignition key.

Make sure that the power supply is not interrupted during programming.

Connect battery charger/power supply - Suitable for AGM Type batteries, recommended current
rating of 90A fixed voltage 13.5V to 14.5V.
NOTICE
Coding will be aborted if the WLAN connection is unstable.
•
An unstable WLAN connection can interrupt communication between PIWIS Tester 3 and the vehicle
communication module (VCI). As a result, coding/programming may be aborted.
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AfterSales
Service
Technical Information

66/18
ENU
2706
2
During control unit coding/programming, always connect PIWIS Tester 3 to the vehicle communication module (VCI) via the USB cable.
Information
The procedure described here is based on the 9900 - PIWIS Tester 3 software version
37.600.010.
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.
1.1
Connect a battery charger with a current rating of at least 90 A.
1.2
Switch on the ignition using the original driver's key. On vehicles with “Porsche Entry &
Drive”, do this by replacing the control unit in the ignition lock with the original driver's key if
necessary.
1.3
9900 - PIWIS Tester 3 with software version 37.600.010 (or higher) installed 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.
1.4
On the PIWIS Tester start screen, call up the  'Diagnostics' menu.
The diagnostic application is then started and the control unit selection screen is populated.
Carry out required measure:
Menu
•

Control
unit/Function
Instructions/information or
2.0
Control units
’Overview’
2.1
 Follow instructions:
•
•
Action

'Additional menu'
•
'Maintenance of
vehicle data'
confirm/execute
 Result/consequence of action
call up
Create Vehicle Analysis Log (VAL) if necessary and
carry out any campaigns that are available for the vehicle.
2.2

select
•F7“
•Yes“/•No“/
•F12“
•F12“
•F12“
2.3
Auxiliary heating
Value:
from 9M0 to '9M9'
AfterSales
change
•F12“
Press •F8“ to
save
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66/18
2.4
Control units
’Overview’
2.5
'Coding/programming'
'Air conditioning and
PCM5.0'
select
•F12“
'Automatic coding'
select
•F12“
If coding is not completed successfully (error message “Coding was not completed
successfully”), coding must be repeated.
3
 Once coding is completed successfully, a new submenu "Heating" will appear in the "Air
conditioning" menu on the PCM5.0 display:
3.1
Select the "Heating" menu and
3.2
set "Timer 1" to 'Active'.
This completes the measure and the vehicle must be restored to its original status:
4.0
Control units
’Overview’
4.1
'Additional menu'
call up
•F7“
'Maintenance of
vehicle data'
select
•F12“
•F12“
Auxiliary heating
4.2
4.3
Control units
’Overview’
4.4
'Coding/programming'
Value:
from 9M9 back to '9M0'
change
'Air conditioning and
PCM5.0'
select
•F12“
'Automatic coding'
select
•F12“
•F12“
Press •F8“ to
save
If coding is not completed successfully (error message “Coding was not completed
successfully”), coding must be repeated.
3
Subsequent work:
3.1
Read out and erase all fault memories.
3.2
Switch off the ignition.
3.3
Disconnect the PIWIS Tester from the vehicle.
3.4
For vehicles with Porsche "Entry & Drive", replace the original vehicle key in the ignition lock
with the control panel again.
3.5
Switch off and disconnect the battery charger.
End of action required.
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AfterSales
Service
Technical Information
Invoicing:
66/18
ENU
2706
2
The work involved is invoiced under the labor operation:
I No.
APOS
Labor operation
27062500
Programming vehicle electrical system batteries
For invoicing and documentation using PQIS, enter the following coding:
Location (FES5)
27060
Vehicle electrical system battery
Damage type (SA4)
4053
Loss of power/voltage drop
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.
© 2018 Porsche Cars North America, Inc.
AfterSales
Aug 17, 2018
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