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Service bulletin B520318

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 id10145298
Published by NHTSA2018-10-09
Manufacturer's numberB520318
Manufacturer's date2018-06-01
NHTSA componentSEATS

NHTSA's summary

MEMORY SEAT ADJUSTMENT IS LIMITED: After programming the vehicle with ISTA 4.10.2x, the adjustment range of the memory seat may restricted.

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 228I2014, 2015, 2016
BMW 230I2017, 2018
BMW 320I2012
BMW 320I2013, 2014, 2015, 2016, 2017, 2018
BMW 328D2014, 2015, 2016, 2017, 2018
BMW 328I2012, 2013, 2014, 2015, 2016
BMW 330E2016, 2017, 2018
BMW 330I2017, 2018
BMW 335I2012, 2013, 2014, 2015, 2016
BMW 340I2016, 2017, 2018
BMW 428I2014, 2015, 2016
BMW 430I2017, 2018
BMW 435I2014, 2015, 2016
BMW 440I2017, 2018
BMW 525D XDRIVE2014
BMW 528I2011, 2012, 2013, 2014, 2015, 2016
BMW 535D2014, 2015, 2016
BMW 535I2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
BMW 535I ACTIVEHYBRID2012 (the catalog's model; the bulletin names a series or trim of it)
BMW 535I US2011 (the catalog's model; the bulletin names a series or trim of it)
BMW 550I2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
BMW 640I2012, 2013, 2014, 2015, 2016, 2017, 2018
BMW 650I2012, 2013, 2014, 2015, 2016, 2017, 2018
BMW 740I2012, 2013, 2014, 2015
BMW 740I US2011 (the catalog's model; the bulletin names a series or trim of it)
BMW 740LI2012, 2013, 2014, 2015
BMW 750I2009, 2010, 2011, 2012, 2013, 2014, 2015
BMW 750I US2011 (the catalog's model; the bulletin names a series or trim of it)
BMW 750LI2009, 2010, 2011, 2012, 2013, 2014, 2015
BMW 760LI2011, 2012, 2013, 2014, 2015
BMW ACTIVE HYBRID 72012
BMW ACTIVE HYBRID 72014
BMW ACTIVEHYBRID 72011
BMW F800 R2013
BMW F800 R2015
BMW M22016, 2017, 2018
BMW M235I2014, 2015, 2016
BMW M240I2017, 2018
BMW M32015, 2016, 2017, 2018
BMW M42015, 2016, 2017, 2018
BMW M52012
BMW M52013, 2014, 2015, 2016
BMW M62012, 2013, 2014, 2015, 2016, 2017, 2018
BMW R NINE T2015
BMW X12016, 2017, 2018
BMW X1 SAV2016 to 2017
BMW X22018
BMW X32011, 2012, 2013, 2014, 2015, 2016, 2017
BMW X42015, 2016, 2017, 2018
BMW X52014, 2015, 2016, 2017, 2018
BMW X5 M2018
BMW X62015, 2016, 2017, 2018

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

Recalls for the same vehicles and component
20192762019-06-07. Seats And Restraints
20162422016-05-20. Seats And Restraints
20161072016-03-03. Seats And Restraints
15V7180002015-10-30. CHILD SEAT; SEATS:MID/REAR ASSEMBLY
20144612014-10-17. Seats And Restraints
14V6500002014-10-17. SEATS
12V1760002012-04-20. SEATS:FRONT ASSEMBLY:HEAD RESTRAINT

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
B7201252026-02-23. Warranty extension. A situation may occur where the front passenger seat is not occupied; however, a “fasten seat belt” warning and a front passenger seat air bag deactivation message appears. If the situation is currently present, sit in the seat and move the seat to a slightly different position. The POL (Passenger Occupancy Light) light should now function correctly. In some cases, the Air bag Warning Light was illuminated, and the following Advanced Crash Safety Module (ACSM) fault is stored: 930A1C - Front passenger seat occupancy detection transmitting fault (moisture)
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.
B5218232024-01-03. Service bulletin. A noise can be heard from underneath the seat while the seat is being moved either forwards or backwards. This can occur to the driver’s and/or the passenger’s front seat.
B5223192023-11-01. Service bulletin. Second seat row blocking access to third seat row, program seat modules. Visible stitching on first row sport seat. Third seat row backrest Bowden cable routing and length change.
B5201212023-09-25. Service bulletin. ?The front seat will not calibrate/initialize, and the stored faults cannot be deleted.
B6504142022-12-12. Service bulletin. According to the customer, the airbag warning light was on, but it may not be illuminated when the vehicle arrives in the workshop. 1. ACSM fault code "930A60 - Seat occupancy detection, front passenger; malfunction" is stored. The fault may or may not currently be present. Or 2. ACSM fault code "930A1C - Front passenger seat occupancy detection transmitting fault(moisture)" is stored. The fault may or may not currently be present.
B5219192022-10-31. Service bulletin. The passenger's side (right rear) of the 60/40 split 2nd row seat may intermittently not fully latch into position on one side (inner rail).
B5206222022-10-31. Service bulletin. When returning the 2nd row seat 40% (right) side 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 back is unlocked. The passenger's side (right rear 40% seat) of the 60/40 split 2nd row seat may intermittently not fully latch into position on one side (inner rail).
B5204222022-10-31. Service bulletin. When returning the 2nd row seat 60% (left) side 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 back is unlocked.