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Service bulletin TIS-78-15

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10058887
Published by NHTSA2015-12-11
Manufacturer's numberTIS-78-15
Manufacturer's date2015-08-12
NHTSA componentELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

NHTSA's summary

PORSCHE: WHEN DRIVING EXTENSIVELY WITH A FULL LOAD, REMAINING FUEL WOULD CALCULATE INCORRECTLY AND RANGE WOULD BE INCORRECTLY DISPLAYED DUE TO INCORRECT CODING RULE USED IN THE INSTRUMENT CLUSTER. MODEL 2015 CAYENNE S-E HYBRID. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Instrument cluster

Vehicles listed
PORSCHE CAYENNE2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
122-F5Q8K-072021-03-06. Service bulletin. Resubmitting at request of Mr. Bernard Hardgrave. Instructions on how to check the cable routing in the front center console area and rework it if necessary in the event that the speedometer needle in the instrument cluster is shaking.
122-J8L7U-032018-03-13. Service bulletin. Customer Concern: The customer observes a Malfunction Indicator Lamp (MIL). (Note: Typically, this MIL is the only symptom of this issue.) Technical Concern: The technician confirms the MIL and notes P0C4700 is present in the high-voltage battery. Service Information: New guided fault finding appears in PIWIS tester version 37.000 and higher. Please follow the instructions given in this resource before proceeding with the information in this ATI.
122-F3B4A-052017-12-22. Service bulletin. Concerns: Instrument cluster Information: The instrument cluster on the affected vehicles may have been coded using an incorrect coding rule. As a result, there is a possibility that the range on remaining fuel will be calculated incorrectly and an incorrect range will be shown on the display when driving extensively at full load. The fuel-level indicator always shows the correct level.