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Service bulletin No. 135-21

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 id10207246
Published by NHTSA2022-02-04
Manufacturer's numberNo. 135-21
Manufacturer's date2022-01-18
NHTSA componentELECTRICAL SYSTEM; SEATS

NHTSA's summary

Technical information for WMJ6 - re-programing and/or coding seat control unit.

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

Electrical system, Seats

Vehicles listed
PORSCHE 9112017, 2018, 2019, 2020, 2021, 2022
PORSCHE CAYENNE2017, 2018, 2019, 2020, 2021, 2022
PORSCHE PANAMERA2017, 2018, 2019, 2020, 2021, 2022

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

Recalls for the same vehicles and component
23V8410002023-12-13. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD
20231452023-03-17. Seats And Restraints
23V0330002023-01-27. ELECTRICAL SYSTEM
22V8030002022-10-25. SEATS; SEAT BELTS:FRONT:ANCHORAGE
20214852021-08-04. Seats And Restraints
20213892021-06-23. Seats And Restraints
21V4670002021-06-23. AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER; SEATS
21V3180002021-05-05. AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER; SEATS
19V7350002019-10-16. SERVICE BRAKES; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
20191152019-03-06. Electrical

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
WTK42026-10-02. Service campaign. Porsche intranet posting with Campaign WTK4 information
No. WTK42026-10-02. Service campaign. Technical Information for Campaign WTK4 – Reset Vehicle Electrical System Battery
No. 103-25-22026-10-02. Service bulletin. Technical Information for Need to Replace Components of the High-Voltage Battery - High-Voltage Battery Control Unit / Cell module; No Mixed Installation Permitted: Observe Specified Approach
No. 103-25-22026-10-02. Service bulletin. Technical Information for Need to Replace Components of the High-Voltage Battery - High-Voltage Battery Control Unit / Cell module; No Mixed Installation Permitted: Observe Specified Approach
No. 86-262026-10-02. Service bulletin. Technical Information for Vehicle Color in Front Display/Control Panel Wrong after Replacing Central Computer (PCM)
No. 84-262026-10-02. Service bulletin. Technical Information for Filler Flap on Vehicles with Hybrid Drive System (PHEV) Does Not Close
No. 81-262026-10-02. Service bulletin. Technical Information for Yellow Warning Message “All-Wheel Drive System Malfunction”, “C12BEF6” and “C133700” in the All-Wheel Electronics Control Unit
No. 12-262026-10-02. Service bulletin. Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment
No. 43-262026-10-02. Warranty extension. Technical Information for Warranty Extension for Front Door Wiring Harness related to Real Top View (RTV) issues
No. 2433-42026-09-04. Service bulletin. Information on Advanced Technical Information for Porsche Mobile Charger NEMA Supply Cable Initialization Failure