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Service bulletin B520723

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 id10235189
Published by NHTSA2023-05-01
Manufacturer's numberB520723
Manufacturer's date2023-03-01
NHTSA componentSEATS

NHTSA's summary

The front seat heating does not heat up after vehicle departure with the climate control in the automatic mode.

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

Seats

Vehicles listed
BMW 740I2023
BMW 760I2023
BMW I72023
BMW X12022, 2023

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

Recalls for the same vehicles and component
23V4140002023-06-08. SEATS
20232142023-04-12. Seats And Restraints
23V0500002023-02-03. SEATS; AIR BAGS

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
B5202242024-04-01. Service bulletin. The seat initialization and memory has been lost; Or Repeat failure of seat initialization after completing the test module via ISTA. One or both of the following check control messages (CCM) may be present: CCM 108 “Driver restraint system” CCM 109 “Passenger restraint system”
B5217232024-02-01. Service bulletin. Customer states one of the front seats is inoperative. The seat heater and power supply are inoperative. During the vehicle test, the seat module does not respond. The power supply fuse for the seat module isfound to have blown.
B5217232024-01-03. Service bulletin. Customer states one of the front seats is inoperative. The seat heater and power supply are inoperative .During the vehicle test, the seat module does not respond. The power supply fuse for the seat module is found to have blown.
B5201212023-09-25. Service bulletin. ?The front seat will not calibrate/initialize, and the stored faults cannot be deleted.
B5207232023-07-24. Service bulletin. The front seat heating does not heat up after vehicle departure with the climate control in the automatic mode.
B5209222023-01-03. Service bulletin. When returning the 2nd row seat 60/40 seat from Easy-Entry: The seat stops moving before reaching the final home position. A Check Control Message (CCM) appears alerting the customer that the seat is not locked.