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NHTSA ID Number: 11030063

Manufacturer Communication Number: B520126

TSB/Document Date: 2026-03-13


Summary

The customer brings vehicle in with one or both of the second row 60/40 split seats in the folded position.The seat does not respond to any requests from the second seat row seat switch button(s).


3/13/26, 11:04 AM

52 01 26_REAR SEAT BACKREST FOR THE 2ND SEAT ROW IS STUCK WHEN FOLDED DOWN

SIB 52 01 26
REAR SEAT BACKREST FOR THE 2ND SEAT ROW IS STUCK WHEN FOLDED DOWN
2026-03-09

THIS REPAIR IS MOBILE FRIENDLY
THIS REPAIR IS REMOTE SOFTWARE UPGRADE (RSU) FRIENDLY

MODEL
ESeries

Model Description

G05

X5 Sports Activity Vehicle

G07

X7 Sports Activity Vehicle

Production Date

Affected Option Code

From Start of Production
including LCI models

With optional equipment 04UB
third-row seating
With standard equipment
60/40 folding second row
seating

SITUATION
The customer brings vehicle in with one or both of the second row 60/40 split seats in the folded position.
The seat does not respond to any requests from the second seat row seat switch button(s).

CAUSE
During comfort entry (easy entry) to the third-row seating, pressure is applied manually while the rear seat
backrest of the second row of seats is folded down.
OR
The rear seat backrest of the second row is already folded down, and pressure is applied to it.
OR
One of the second seat row manual release cables has been actuated, and the seat is now in an in-between
position.

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52 01 26_REAR SEAT BACKREST FOR THE 2ND SEAT ROW IS STUCK WHEN FOLDED DOWN

Seat Manual Release 1
The second row 60/40 seat can be manually
released in case of electrical failure to access
the third-row seats.
This is located at the outer pivot point on each
side of the 2nd row seat.

Seat Manual Release 2
The seat release (red) is for the third-row
passenger to actuate- folding the second-seat
row 60/40 backrest- to allow occupants to exit
the vehicle in case of electrical failure.

CORRECTION
Initialize the seat.
If initialization does not restore operation, check the microswitch status using ISTA.
See Video BV520126 Reset second seat row manual release G07

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52 01 26_REAR SEAT BACKREST FOR THE 2ND SEAT ROW IS STUCK WHEN FOLDED DOWN

If the seat backrest microswitch does not read closed with the seat backrest folded, press the rear seat
backrest down with force until it engages correctly.

PROCEDURE
To address this issue, proceed as follows:
1. Perform a seat initialization.
1a. Yes, initialization worked. Reassess the vehicle and hand it back to the customer.
Or:
1b. No, initialization did not work or was aborted, continue with step 2.
Note: There may be seat module-specific “No seat adjustment because of engine start conditions” faults
stored.
2. Read out the status of the second seat row microswitch using the diagnosis system.
To do this, use the path below.
Body --> Seat adjustment --> Seat adjustment driver's side/passenger's side rear --> Buttons and switches
2a. No, the microswitch is open.
Continue with step 3.
Or:
2b. Yes, the microswitch is closed.
Continue diagnosis.
3. Press the folded rear seat backrest
down with force until it engages correctly.
This also engages the microswitch to
indicate to the vehicle electronics that the
seat is now in the folded position.
Then check whether the electrical
adjustment is working, and reassess the
vehicle.
See Video BV520126 Reset second seat
row manual release G07
NOTE: The seat does not need to be
removed from the vehicle to perform this
repair.

4. These networked seats are described in detail in Service Bulletin B52 23 19 which contains information
on seat initialization and all relevant seat bulletins,

PARTS INFORMATION
No parts are required for this repair.

CLAIM INFORMATION
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52 01 26_REAR SEAT BACKREST FOR THE 2ND SEAT ROW IS STUCK WHEN FOLDED DOWN

Covered under the terms of the BMWeBay logo New Vehicle Limited Warranty for Passenger Cars and Light
Trucks as described below.
Repair Code:

5220156500

Backrest lock / rear seat adjustment / cargo adjuster/ rear
seat backrest lock Does not lock into position

Obtain the flat rate unit (FRU) allowances for the following that applies.

Labor
Operation
00 00 006
Or:
00 00 556
And:

Description

Labor Allowance

Carrying out vehicle test (Main work)

As applicable

Carrying out vehicle test (Plusposition)

As applicable

Supporting voltage of the vehicle electrical system /
recharging vehicle battery

As applicable

61 00 006*

Carrying out vehicle diagnosis, ABL (Work time)

Step 1a: Up to 2
FRU WT
Or:
Step 1b and Step
2a: Up to 4 FRU WT

Or:
00 58 500*
And:

Diagnosis Worktime Flat Rate

2 FRU

61 00 828

61 00 828 Initialize a system (Seat) (With performing
Steps 1a, 1b and 2a. For Step 2b, also see below)

As applicable

Steps 1b, 2a to Step 3: Work time to manually engage
and reset the microswitch to show that the seat is now
in the folded position

2 FRU

61 21 528
And, as needed:

When required:
52 99 000

If you are using a Main labor code for another repair, use the Plus code labor operation 00 00 556 instead of
00 00 006, or exclude them (including 61 21 528) when the Vehicle Test is included in another repair.
Work time labor operation codes 61 00 006, 00 58 500, 52 99 000 are not considered Main labor operations.

Step 2b - Other Repairs (With and After Continued Diagnosis)
If other eligible and covered work is performed because of performing the ISTA diagnostics, related test
plans, and/or other approved diagnosis procedures, claim this work with the applicable Repair Code listed in
AIR together with the corresponding labor operation codes and their flat rate unit (FRU) allowance(s),
including the diagnosis* that applies.
(*) Based on which one applies to your center, please refer to SI B01 01 20 or B01 07 20 for the applicable
procedure for documenting, claiming, and explaining, on the RO and in the claim comments, your diagnosis
work time (WT), job/repair work time (WT), and the vehicle repairs your center performed, unless otherwise
required by State law.
BMWeBay logo Group’s AIR Application Resource for Flat Rate Labor Operation Codes
To obtain the corresponding flat rate unit (FRU) allowance information from the BMW Group AIR application
resource, start by entering the Chassis Number (last seven (7) characters of the VIN), and click on the
“Search” icon. If the “Vehicle Selection” window displays two or more model possible vehicle choices, select
the applicable Model, or enter the full VIN (17 characters) instead to proceed. Click on the “Flat Rate Units”
button and enter a flat rate labor operation code number “without spaces” in the field to the right, click on the

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52 01 26_REAR SEAT BACKREST FOR THE 2ND SEAT ROW IS STUCK WHEN FOLDED DOWN

“Search” icon to display the corresponding listing of “Flat rate unit group details” that are available and their
corresponding FRU allowances.

FEEDBACK REGARDING THIS BULLETIN
Technical Feedback
Warranty Feedback
Parts Feedback

To submit feedback for the technical topic of this bulletin: Submit your
feedback in the rating box at the top of this bulletin
To submit feedback for the CLAIMS section of this bulletin: Submit an IDS
ticket to the Warranty Department, or use the chat available in the
Warranty Documentation Portal
To submit feedback for the PARTS section of this bulletin: Submit an IDS
ticket to the Parts Department

Supporting Materials
Videos
52 01 26

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TSB/Document ID: B520126

Replacement Service Bulletin Number:

MFR Communication Date: 2026-03-09

MFR Internal Campaign ID/Software Version:

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: SEATS

MFR Component System:

MFR Component Subsystem:


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