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Service campaign No. WNR1

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 campaign
NHTSA id11030817
Published by NHTSA2026-04-06
Manufacturer's numberNo. WNR1
Manufacturer's date2026-03-10
Campaign id or software versionWNR1
NHTSA componentENGINE

NHTSA's summary

Technical information for WNR1 - Re-Programming of the DME Control Unit (Workshop Campaign)

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
PORSCHE CAYENNE E-HYBRID2021, 2022 (the catalog's model; the bulletin names a series or trim of it)

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

Recalls for the same vehicles and component
21V3410002021-05-12. ENGINE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
No. 31-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
No. 30-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils
No. 29-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils
No. 36-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
GR13D8022026-09-04. Service bulletin. Parts Information for Parts Withdrawal - Coolant Regulator Housing
No. 2304-22026-09-04. Service bulletin. Information on Advanced Technical Information for E3.I/G2 V8 – Oil/Air Separator Membrane Failure
13/262026-08-06. Service bulletin. Allocation of Approved Engine Oils MY 2027 (13/26)
GR13D7942026-08-05. Service bulletin. Parts Withdrawal - Various Parts
GR13D7902026-07-08. Other. Parts Withdrawal - Various Parts
20/262026-07-07. Other. Overview of Approved Porsche C20 Engine Oils (20/26)