NHTSA ID Number: 10151181
Manufacturer Communication Number: B610216
TSB/Document Date: 2018-12-10
Summary
CSC Communication Errors. The vehicle cannot be put into drive readiness or the high voltage system could automatically deactivate during driving. Failure of communication on the CAN bus due to one or more faulty cell supervision circuits (CSC). As a result, the switch contactor in the high-voltage battery
opens.
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TSB/Document ID: B610216
Replacement Service Bulletin Number:
MFR Communication Date: 2016-03-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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Page 1 of 5
SI B61 02 16
General Electrical Systems
March 2016
Technical Service
SUBJECT
CSC Communication Errors
MODEL
I01 (i3 and i3 REx)
I12 (i8)
Vehicles produced from 12/16/13 to 10/15/14
SITUATION
The vehicle cannot be put into drive readiness or the high voltage system could automatically
deactivate during driving.
CAUSE
Failure of communication on the CAN bus due to one or more faulty cell supervision circuits
(CSC). As a result, the switch contactor in the high-voltage battery opens.
CORRECTION
Replace all CSCs if affected device has specified production codes and diagnostics indicate
replacement.
PROCEDURE
Only properly trained personnel, who have passed all applicable technical training courses,
should perform any maintenance or repairs on any Hybrid or Electric Vehicle. Work
performed by unqualified persons may result in severe injury or damage to the vehicle.
Additional information may be found in REP 61 00… Observe safety instructions when
handling electric vehicles.
1. Perform a vehicle test with ISTA/D and check to see if the battery management electronics
(SME) contains any of the following fault codes:
21F0EE - High-voltage battery, cell supervision circuit: One or more voltages invalid
21F0BC - High-voltage battery, cell supervision circuit: Communication to SME failed
21F13C - High-voltage battery: at least one battery cell is completely discharged
21F0F3 - High-voltage battery, cell supervision circuit 1: Voltage measurement of the cell
block, measured value implausible
21F0F4 - High-voltage battery, cell supervision circuit 2: Voltage measurement of the cell
block, measured value implausible
https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/312... 4/4/2016
Page 2 of 5
21F0F5 - High-voltage battery, cell supervision circuit 3: Voltage measurement of the cell
block, measured value implausible
21F0F6 - High-voltage battery, cell supervision circuit 4: Voltage measurement of the cell
block, measured value implausible
21F0F7 - High-voltage battery, cell supervision circuit 5: Voltage measurement of the cell
block, measured value implausible
21F0F8 - High-voltage battery, cell supervision circuit 6: Voltage measurement of the cell
block, measured value implausible
21F0F9 - High-voltage battery, cell supervision circuit 7: Voltage measurement of the cell
block, measured value implausible
21F0FA - High-voltage battery, cell supervision circuit 8: Voltage measurement of the cell
block, measured value implausible
21F0FB - High-voltage battery, cell supervision circuit 9: Voltage measurement of the cell
block, measured value implausible
21F0FC - High-voltage battery, cell supervision circuit 10: Voltage measurement of the cell
block, measured value implausible
21F0FD - High-voltage battery, cell supervision circuit 11: Voltage measurement of the cell
block, measured value implausible
21F0FE - High-voltage battery, cell supervision circuit 12: Voltage measurement of the cell
block, measured value implausible
Does the associated test plan in ISTA/D instruct that any CSC’s must be replaced?
YES– go to step 2.
NO - go to step 3.
2. Check the production date on the
diagnosed CSC (1) to see if it
falls within the following
production period:
I01 - 12.13.13 to 09.22.14
I12 - 01.20.14 to 04.30.14
Does the production date on
the affected CSC(s) fall within
https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/312... 4/4/2016
Page 3 of 5
the range specified above?
YES- ignore the instructions of
the test plan and replace all
CSC’s per repair instructions:
I01 - 61 27 540 - Removing and
installing/ replacing cell
supervision circuit.
I12 - 61 27 540 - Removing and
installing/ replacing cell
supervision circuit (top) & 61 27
542 - Removing and
installing/replacing cell
supervision circuit (bottom)
NO- continue on to Step 3.
3. Continue diagnosis per the associated test plan.
Note: Prior to replacing any parts, refer to SI B00 03 06 to determine if a TC PuMA case is
required.
PARTS INFORMATION
I01
Part number
Description
Quantity
61 27 7 648 785
Cell monitoring circuit
8
61 27 7 625 062
Cover for high-voltage battery
1
61 27 7 622 121
Seal screw
4
61 27 7 625 086
Warning sticker for HV storage medium
1
Part number
Description
Quantity
61 27 7 648 787
Cell monitoring circuit
12
61 27 8 610 481
Seal for HV battery
1
61 27 8 610 482
Seal, service cover, HV battery
1
07 12 9 908 570
ISA screw
6
61 27 7 643 663
37
I12
https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/312... 4/4/2016
Page 4 of 5
Bulk Materials
83 19 2 221 349
R134a (Gas 1 oz units)
As needed
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light
Trucks.
Defect Code:
61 27 90 02 00
I01 (i3 and i3 REx)
Labor Operation:
Labor Allowance:
Description:
00 63 336
48 FRU
Check the production date of the cell
supervision circuits and replace all of
them (Main work)
47 FRU
Check the production date of the cell
supervision circuits and replace all of
them (Plus work)
Labor Operation:
Labor Allowance:
Description:
00 63 336
86 FRU
Check the production date of the cell
supervision circuits and replace all of
them (Main work)
85 FRU
Check the production date of the cell
supervision circuits and replace all of
them (Plus work)
Or:
00 63 984
Or, for the:
I12 (i8)
Or:
00 63 984
And, as needed:
Sublet – Bulk Materials (excluding R134a)
Sublet Code 4
Reimbursement for the repair-related
See sublet reimbursement
bulk materials (Please do not use the
calculation below
part numbers for claim submission)
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Page 5 of 5
Sublet reimbursement calculation for claiming the “used quantities” of repair-related bulk materials
(BMW part numbers) is at dealer net plus your center’s handling.
Enter this material cost in sublet and itemize the amount in the claim comment section
Other Repairs
If other eligible and covered work is performed as a result of performing the ISTA diagnostics and
related test plans results, claim this work with the applicable defect code and labor operations listed
in KSD2.
[ Copyright ©2016 BMW of North America, Inc. ]
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