Service

Technical Information

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ENU

2015

2

Residual Range Display Implausible: Checking Instrument Cluster and Re-Coding if
Necessary (92/24)
Vehicle Type:

911 Carrera 4 (992) / 911 Carrera 4S (992) / 911 Carrera 4 GTS (992) / 911 Targa 4 (992) /
911 Targa 4S (992) / 911 Targa 4 GTS (992) / 911 Dakar (992) / 911 Turbo (992) / 911 Turbo
S (992)

Model Year:

As of 2020 up to 2024

Equipment:

All-wheel drive (M No. 1X1)

Concerns:

Fuel level sender

Cause:

Customer complains about an implausible remaining range (too high) displayed on the
instrument cluster.

Cause:

Due to the specific design of the fuel tank in all-wheel drive derivatives, the fill level can only be measured
by the tank sensor up to a certain filling capacity due to the installation space. The filling capacity of the
fuel tank is calculated using the fuel consumption signal from the engine control system.
In rare cases, component tolerances and temperature influences can lead to a slightly different positioning of the tank sensor in the fuel tank. This can lead to a higher filling capacity being assumed for
calculating the remaining range than what is actually present in the fuel tank.

Action:

In the event of a complaint, first check individual measured values on the instrument cluster using the
vehicle analysis log to confirm the fault pattern.
Only adjust the vehicle order if the fault pattern is confirmed, and then re-code the instrument cluster
to set a correction value for the tank sensor.
Information
Before starting the action, make sure that the fuel level of the vehicle is less than 16 liter.
If the vehicle has been refuelled in the meantime, the fuel tank must be emptied to a content of less than
16 liter before starting the action and then refilled after completion.

Required Tools
Tools:

•
•

P90999 - PIWIS Tester 4 with PIWIS Tester software release 42.800.010 (or higher) installed
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 - 90-A battery charger. For
further information about the battery chargers to be used, see the corresponding Workshop Manual.
 Workshop Manual '270689 Charging battery and vehicle electrical system'

Required tools if the fuel tank needs to be emptied and refilled:
•

Fuel extraction unit, e.g., VAS 5190A - Fuel extraction unit

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2015

ENU

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•
•

Technical Information

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Pin wrench, e.g., 9731/1 - Pin wrench
Connection line, e.g., 9705/3 - Connection line
Steering wheel balance, e.g., VAS 6826 - Steering wheel balance

Checking instrument cluster and re-coding if necessary
Work Procedure:

Information
Test prerequisites: Fuel level of the vehicle below 16 liter.
1

If required: Drain fuel.

 Workshop Manual '200317 Drain and fill fuel'
2

Connect and switch on the battery charger.
 Workshop Manual '270689 Charging battery/vehicle electrical system'

3

Connect P90999 - PIWIS Tester 4 to the vehicle and start it. Switch on the ignition.

4

Create the vehicle analysis log.

5

Check the following measured values in the vehicle analysis log (VAL) under “Instrument cluster” >>
“Measured values”:
•
•

Tank capacity
Tank content - input data for tank sensor 1
Assessment
The “tank capacity” measured value displayed
is less than 16 liter
and
The “Tank content - input data for tank sensor
1” measured value is less than 280 (ohms)
The “tank capacity” measured value displayed
is less than 16 liter
and
The “Tank content - input data for tank sensor
1” measured value is greater than or equal to
280 (ohms)

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Action
Measured values of fuel supply sensor
implausible.
Continue with  6.

Measured values of fuel supply sensor OK.
If the complaint is not rectified by this technical
information, resume troubleshooting.
If required: Refill the previously drained fuel.
 Workshop Manual '200317 Drain and fill fuel'
End of action.

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ENU

2015

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Information
Action step 6 may only be carried out on vehicles in which the measured values of the fuel
supply sensor are implausible.
Only in this case can it be assumed that the fault pattern with regard to slightly different
positioning of the fuel supply sensor exists as described in this technical information and
that subsequent adjustment of the vehicle order and coding of the instrument cluster will be
expedient.
6

Add control number “BI0 - FUEL TANK. + DEV. CHARACTERISTIC CURVE ONLY KD” to vehicle order.
Information
The vehicle data is maintained via a guided Tester procedure.
Pay particular attention to the following:
•

A connection to the internet is required for the Tester procedure.

•

Depending on the changes made to the vehicle data, automatic coding and backup documentation of the affected control units is performed after saving these changes.

•

Read and follow the information and instructions on the PIWIS Tester during the guided
procedure.

•

Do not interrupt the coding process. When coding is complete, the message “Coding has been
completed successfully” is displayed and a tick will then appear in the ‘Status’ box.

6.1

In the control unit selection (‘Overview’ menu) press •F7“ to call up the Additional menu.

6.2

Select the ‘Vehicle data maintenance with PIWIS ONLINE’ function and press •F12“
(‘Next’) to confirm.

6.3

Press •F12“ (‘Next’) to skip the displays containing information about vehicle description,
colors / materials and X numbers.

6.4

On the second page of M numbers, place the coding value “BI0 - FUEL TANK. + DEV.
CHARACTERISTIC CURVE ONLY KD” with the vehicle data. To do this, select the
corresponding coding value via the drop-down menu in the “PR number family” fuel tank.
The value “0I3 - FUEL CONTAINER 3” is defined by the value “BI0 - FUEL TANK. + DEV.
CHARACTERISTIC CURVE ONLY KD” replaced.
Make sure that the ‘Installed’ column is ticked and that the pen symbol is displayed in the
‘Changed’ column.
Then press •F12“ (‘Next’) to close the PR numbers display.

6.5

Press •F8“ in the overview that is then displayed to save the changed vehicle data.

6.6

Once you have saved the vehicle data, press •F11“ (‘Back’) to return to the control unit
selection screen.

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Information
Before automatic coding of the instrument cluster, it is absolutely necessary for the
vehicle order “BI0 - FUEL TANK. + DEV. CHARACTERISTIC CURVE ONLY DV” to have been
added successfully.
7

Re-coding instrument cluster.
For procedure, see:  Workshop Manual '902555 Replacing instrument cluster'

8

Read out and delete all control unit fault memories.

9

Create the vehicle analysis log.

10 Exit the diagnostic application. Switch off ignition. Disconnect P90999 - PIWIS Tester 4 from the
vehicle.
11 Switch off and disconnect the battery charger.
 Workshop Manual '270689 Charging battery/vehicle electrical system'
12 If required: Refill the previously drained fuel.
 Workshop Manual '200317 Drain and fill fuel'

Labor position and PCSS encryption
Labor position:
I No.

APOS

Labor operation

90252591

Programming instrument cluster

90252592

Programming instrument cluster
PCSS encryption:

Location (FES5)

20150

Fuel supply sensor

Damage type (SA4)

4041

Wrong display

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.

© 2024 Porsche Cars North America, Inc.

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