Porsche Cayenne 2015–2016 — technical service bulletin
Bulletin 122-S7R6B-11 · NHTSA communication 10119334 · issued Oct 21, 2016
Technical service bulletin
communication type
Electrical System
component
2015–2016
model years
2
vehicle entries
Official summary
The customer observes a MIL. (Please note: Often, this failure mode is not accompanied by other unwanted behavior.) The technician confirms the MIL and notes P0C4700 is present in the high voltage battery. PCNA is aware of this issue. A bad ground has been found in a number of cases. The service recommendation is to check ground continuity and replace the electric water pump and the electric water pump relay, if necessary.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.