NHTSA ID Number: 11030059
Manufacturer Communication Number: B120523
TSB/Document Date: 2026-03-13
Summary
The customer states there is a Drivetrain Malfunction message displayed in the instrument cluster. In addition, the following fault memory entries are saved in the CCU (Combined Charging Unit) 0317F2 - High-voltage system, insulation fault detected: when switch contactors are closed. 0317F1 - High-voltage system, insulation resistance below warning threshold: when switch contactors are closed. The fault memory entries (isolation faults) can occur both individually and in combination and must be traced back to the eDrive motor based on the ISTA test procedure. If ISTA test procedure lists possible cause of fault as; A metal chip is found behind the brush module (between the brush module and the end shield of the electrical machine). Repair required. Refer to service solution no. 20000794435083 in Aftersales Information Research (AIR). Follow information in the Procedure section below.
Speed nut
Multi-purpose bolt
ASA Bolt
ASA Bolt
Pressure compensation element
Quantity
4
4
1
1
2
2
2
2
4
2
2
2
2
2
10
4
2
1
G26 Front eDrive
Part Number
33 30 6782246
07 14 6885922
07 14 6899140
07 14 6897424
39 10 6865725
07 14 8835104
07 14 6875114
37 14 8851843
07 14 7575163
33 32 6768884
33 13 1214961
31 20 6866022
22 31 9494177
33 30 6787062
32 30 6778609
12 37 1023794
Description
Hexagon screw with washer
Multi-purpose bolt ASA
Cage nut
Cage nut
Multi-purpose bolt
Multi-purpose bolt
Hexagon collar nut
Front attachment rod
Self-locking hexagon nut
Hexagon collar nut
Retaining ring
Shouldered bolt with compression spring
Hexagon bolt
Combination nut
Torx bolt
Pressure compensation element
Quantity
4
4
4
2
4
4
4
1
1
2
1
2
2
2
1
1
I20 Front eDrive
Part Number
31 10 6769907
33 32 6760340
22 11 6893773
07 11 9906460
33 30 6782246
31 20 6795249
33 13 1214961
07 11 9904956
07 11 9909673
31 10 8835359
07 14 8835360
37 10 6789678
31 10 6765451
31 10 6789333
32 30 6778609
34 10 6864424
07 14 7398300
31 11 6899302
07 14 9455119
61 27 9487465
12 37 1023794
Description
Screw with shim
Torx screw with washer
Multi- purpose bolt
Hexagon screw with washer
Hexagon screw with washer
Shouldered bolt with compression spring
Retaining ring
Hexagon bolt
Hexagon bolt
Screw
Combination nut
Flanged hexagon nut (Forced rounding of 10)
Combination nut
Outside torx bolt
Torx bolt
Torx screw with washer (Forced rounding of 10)
Hexagon bolt
Multi-purpose bolt
Multi-purpose bolt
Screw
Pressure compensation element
Quantity
2
2
2
5
2
2
1
2
4
2
2
2
2
2
1
4
4
14
6
4
1
Description
Hexagon screw with washer
Hexagon bolt
Screw
Hexagon screw with washer
Hexagon bolt
Retaining ring
Shouldered bolt with compression spring
Multi-purpose bolt
Hexagon bolt
Hexagon collar nut
Hexagon nut
Hexagon bolt with flange
Combination nut
BMW
design clip
Hexagon bolt
Multi-purpose bolt ASA
Self-locking hexagon nut
Pressure compensation element
Quantity
4
2
4
4
2
2
2
2
2
2
10
2
2
2
4
4
8
2
i20 Rear eDrive
Part Number
33 17 6760336
12 90 9884545
61 27 9487464
33 32 6775040
07 11 9907136
33 13 1214961
31 20 6866022
33 30 6891268
33 30 6861944
33 55 6790913
07 14 8854416
07 12 9908011
33 30 6787062
34 20 6881294
34 20 6850560
07 14 6893779
64 50 9123157
12 37 1023794
G26 Rear eDrive
Part Number
07 14 8833456
33 32 6760340
07 14 6884435
07 12 9908011
33 30 6787062
33 13 1214961
33 30 6890937
07 14 8854416
31 10 6890194
33 30 6867271
07 11 9907136
33 30 6861943
33 32 6768884
33 30 6861221
31 20 6866022
12 37 1023794
Description
Hex Bolt (M14X1.5X133)
Torx-bolt with washer (M12x127-10.9)
Multi-purpose bolt ASA (M10x35 ZNS3)
Hexagon screw with flange (M14x1,5x100)
Combination nut (M14x1,5-10ZNNIV)
Lock Ring (D=22,4)
Multi-purpose bolt ASA (M14x1.5x115)
Hexagon nut
Hexagon nut with collar (M14x1,5-10 ZNS3)
Hex Bolt with washer (M14x1,5x84)
Hexalobular socket screw (14x1,5x90 ZNS3)
Hex Bolt (M14x1,5x90)
Hexagon nut with collar (M10-10 ZNS3)
Torx bolt (ISA M12x35-10.9)
Collar bolt with compression spring (M16x1,5x66)
Pressure compensation element
Quantity
2
4
4
2
2
2
2
2
6
4
2
2
2
10
2
2
Description
Hex Bolt with washer (M14x1,5x133ZNS3)
Hex Bolt
Multi-purpose bolt (M14x1,5x168ZNS3)
Hex Bolt with washer (M14x1,5x148)
ASA screw (M10x40 10.9)
Hexagon nut
Multi-purpose bolt
Hex Bolt (M16x1,5x100)
Hexalobular socket screw (14x1,5x90 ZNS3)
Hex Bolt with washer (M14x1,5x84)
Hex Bolt with washer (M16x1,5x110)
ASA screw, thread-forming (M6x16)
Hexagon nut with collar (M10-10 ZNS3)
Hex Bolt (M12X1,5X35)
Plug-in nut (M10-10 ZNS3)
Multi-purpose bolt (10x45 ZNS3)
ASA-Bolt (M14x1,5x70 ZNS3)
Hex Bolt (5x105)
Collar bolt with compression spring (M16x1,5x72-8.8)
Inner hex bolt (M8X14)
Pressure compensation element
Quantity
4
2
2
2
4
4
2
2
2
2
2
2
2
8
2
10
4
6
2
2
2
G70 Rear eDrive
Part Number
33 17 6760336
12 90 9884545
33 32 6897737
33 32 6775040
31 10 6862545
07 14 8854416
33 30 6891268
33 30 6861944
07 11 9907136
33 30 6867271
07 11 9907031
34 50 9804151
33 55 6790913
07 11 9908280
07 14 7283812
31 11 6899302
07 14 8837399
61 25 8833846
31 20 6795249
34 21 1161806
12 37 1023794
G60 Front eDrive
Part Number
33 30 6782246
31 10 6872062
32 30 6778609
33 13 1214961
22 31 9494177
34 10 6864424
07 11 9904161
07 14 8835360
31 10 6789333
31 10 6765451
37 10 6789678
07 14 7283812
07 14 8837399
07 14 8840397
07 14 8837399
31 11 6899302
61 25 8833846
31 20 6866022
12 37 1023794
Description
Hex Bolt with washer (M14x1,5x158)
Hex Bolt with washer (M12x95x1.5)
Torx bolt (M8X33)
Lock Ring (D=22,4)
Hex Bolt (M10x35-10.9-MKL)
Torx screw with washer (M12X1,5X43 ZNS3)
Hex screw with collar (M10x60)
Combination nut (14x1,5 ZNNIV)
Torx screw (M10x59-10.9 ZNS)
Combination nut (M10-22H ZNS3)
Hex nut with flange (M12x1,5-10-ZNS3)
Plug-in nut (M10-10 ZNS3)
ASA-Bolt (M14x1,5x70 ZNS3)
ASA-Bolt (M14x1,5x85 ZNS3)
ASA-Bolt (M14x1,5x70 ZNS3)
Multi-purpose bolt (10x45 ZNS3)
Hex Bolt (M14x1.5x105)
Collar bolt with compression spring (M16x1,5x66)
Pressure compensation element
Quantity
2
4
1
1
2
4
2
2
2
2
2
2
2
2
4
10
6
2
1
Description
Hex Bolt with washer (M14x1,5x133ZNS3)
Hex Bolt
Hex Bolt with washer (M14x1,5x148)
Multi-purpose bolt (M14x1,5x168ZNS3)
Circlip
Multi-purpose bolt
Hexagon nut
Hex Bolt (M16x1,5x100)
Hexalobular socket screw (14x1,5x90 ZNS3)
Hex Bolt with washer (M14x1,5x84)
Hexagon bolt (M16x1,5x110)
ASA screw, thread-forming (M6x16)
Hexagon nut with collar (M10-10 ZNS3)
Hex Bolt (M12X1,5X35)
Multi-purpose bolt ASA (M10x35 ZNS3)
Hex Bolt (M12x1,5x35)
Hex Bolt (M12x5x130)
Plug-in nut (M10-10 ZNS3)
ASA-Bolt (M14x1,5x70 ZNS3)
Multi-purpose bolt (10x45 ZNS3)
Hex Bolt (M14x1.5x105)
Collar bolt with compression spring (M16x1,5x66)
Pressure compensation element
Quantity
4
2
2
2
2
2
6
2
2
2
2
2
2
8
2
5
2
2
4
10
6
2
2
G60 Rear eDrive
Part Number
33 17 6760336
12 90 9884545
33 32 6775040
33 32 6897737
33 13 8860481
33 30 6891268
07 14 8854416
33 30 6861944
07 11 9907136
33 30 6867271
07 14 5A9B1B9
34 50 9804151
33 55 6790913
07 11 9908280
07 14 6884435
07 14 8845501
61 25 8833851
07 14 7283812
07 14 8837399
31 11 6899302
61 25 8833846
31 20 6866022
12 37 1023794
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TSB/Document ID: B120523
Replacement Service Bulletin Number:
MFR Communication Date: 2026-03-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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