B330416

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SI B33 04 16
Rear Axle
September 2016
Technical Service
SERVICE ACTION: REPLACE REAR-AXLE
DIFFERENTIAL
This Service Information bulletin supersedes SI 33 04 16 dated August 2016
The vehicle delivery stop has been lifted. Please perform the procedure the next time the
vehicle is in the shop.
MODEL
F06 (M6 Gran Coupe)
F10 (M5)
F12 (M6 Convertible)
F13 (M6 Coupe)
F80 (M3)
F82 (M4)
F83 (M4 Convertible)
F87 (M2 Coupe)
SITUATION
The rear differential emits a loud noise.
CAUSE
Manufacturing defect in the rear differential limited slip clutch pack. This may cause, in certain
driving situations, excessive noise from the rear differential.
AFFECTED VEHICLES
This Service Action involves certain M2 Coupe, M3 Sedan, M4 Coupe and Convertible, M5 and M6
(Gran Coupe, Convertible, and Coupe) produced from May 12, 2016 through July 4, 2016.
Vehicles which require this Service Action to be completed will show it as “Open” when checked
either in AIR, the "Service Menu" of DCSnet (Dealer Communication System) or with the Key
Reader.
You may receive some vehicles from the ports affected by this campaign that show
the campaign as still open.
CORRECTION
Replace the rear axle differential.
Alternatively, the center may release the vehicle to the customer prior to repairs,
provided the customer signs the disclosure attached to this bulletin.
Note: When applicable, this repair will have to be performed when an
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affected vehicle arrives at your center for their Running-in Check at 1,200 Miles.
PROCEDURE
Step One
Refer to the following attached repair instruction information:
z
M5 and M6: RA REP 33 10 016 - Replacing the rear axle differential.
z
M2, M3 and M4: Refer to the attached repair procedure (REP 33 10 017 R&R Diff F8x
Updated 8-22.pdf) in this SIB (do not use ISTA)
Note: This Repair procedure has been modified to expedite repairs.
During the repair, when releasing rear differential
Hexagonal collar bolt M14x1.5x125 (PN 33 17 7 852
488), make sure that the bolt’s hex head does not
show any marks indicating previous removal. In case
bolt M14x1.5x125 (1) has been removed (torque
released) previously, it needs to be replaced together
with 4 sub-frame Torx screws M12x60 (PN 33 30 2 284
642).
Note: Use the following Repair Instructions in ISTA for the preliminary repair work:
z
18 00 018 Removing and installing complete exhaust system (S55)
z
33 21 000 Removing and installing/replacing left or right output shaft
z
33 32 175 Removing and installing/ replacing left or right rear reinforcement strut
Step Two
Attention: Rear Axle Differential Follow-up Fluid Service after Assembly
Replacement
These vehicles require “follow-up” fluid replacement service after the replacement of the rear axle
differential assembly, please perform and submit as outlined below:
A. Rear axle differential is replaced “before” vehicle delivery to the first customer (New
in-stock Vehicle)
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• After vehicle delivery, the rear axle differential fluid replacement service is included in with
performing the “Service - running-in check” at 1,200 miles (Labor operation 00 00 600).
• Claim this (“A”) under the BMW Maintenance Program.
• BMW recommends not exceeding the first 2,400 miles before performing the Service running-in check.
B. Rear axle differential replaced “after” the Service – running-in check has already been
performed
• Please notify the customer when they pick-up their vehicle they will need to bring the
vehicle back to have a follow-up rear axle differential fluid service performed after the next
1,200 miles have elapsed.
• Invoice this rear axle differential fluid service (”B”) under the original Service Action
Campaign Defect Code (“00 33 99 01 00”) as described in the Warranty Information section
below.
Note: Defect Code 00 33 99 01 00 will not show “open” after the prerequisite repair for
replacing the rear axle differential is “submitted and credited.”
PARTS INFORMATION
Please monitor the DCS messages for the parts ordering procedure.
F8x produced up to 06/28/2016
Identifying the 8 090 464 differential: Check the
number of splines on the old/new differential. The
correct differential has 35 splines (1)
COMMON PARTS F8X (M2/M3/M4) produced up to 06/28/2016
Part number
Description
Quantity
33 10 8 090 464
Rear-axle differential with lock
1
46 53 8 534 589
ISA bolt with washer
1
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33 32 6 760 380
Multi-purpose nut
4
31 10 6 769 907
Bolt with washer
2
18 30 7 613 551
External Torx
2
07 11 9 904 024
Hexagon nut
4
07 11 9 904 793
Hexagon screw with washer
2
33 41 1 133 785
Collar nut
2
33 14 1 206 439
Circlip
2
33 32 6 760 668
Self-locking collar nut M12X125-10ZNS3
2
31 10 6 768 886
Hexagon nut with collar M14X1.5-10
ZNS3
2
33 32 6 779 785
Eccentric bolt M14X105-10.9
1
33 30 6 784 802
Eccentric bolt M12X1.5-10 ZNS3
1
F87 (M2) ADDITIONAL PARTS
18 30 7 620 349
V-clamp (M2)
1
33 30 7 857 294
Torx bolt with washer (M2)
2
F80, F82, F83 (M3, M4) ADDITIONAL PARTS
18 30 7 597 650
Collar nut M8 (M3/M4)
4
18 30 7 851 168
Seal (M3/M4)
2
07 11 9 906 292
Hex bolt M12X1.5X80 10.9 (M3 M4)
4
F8x produced from 06/29/2016
Identifying the 8 090 473 differential: Check the
number of splines on the old/new differential. The
correct differential has 27 splines (1)
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COMMON PARTS F8X (M2/M3/M4) produced from 06/29/2016
Part number
Description
Quantity
33 10 8 090 473
Rear-axle differential with lock
1
31 10 6 769 907
Bolt with washer
2
18 30 7 613 551
External Torx
2
33 14 1 206 439
Circlip
2
33 41 1 133 785
Collar nut
2
07 11 9 904 793
Hexagon screw with washer
2
07 11 9 904 024
Hexagon nut
4
33 32 6 760 380
Multi-purpose nut
4
46 53 8 534 589
ISA bolt with washer
1
33 32 6 760 668
Self-locking collar nut M12X125-10ZNS3
2
31 10 6 768 886
Hexagon nut with collar M14X1.5-10
ZNS3
2
33 32 6 779 785
Eccentric bolt M14X105-10.9
1
33 30 6 784 802
Eccentric bolt M12X1.5-10 ZNS3
1
F87 (M2) ADDITIONAL PARTS
18 30 7 620 349
V-clamp (M2)
1
33 30 7 857 294
Torx bolt with washer (M2)
2
F80, F82, F83 (M3, M4) ADDITIONAL PARTS
18 30 7 597 650
Collar nut M8 (M3/M4)
4
18 30 7 851 168
Seal (M3/M4)
2
07 11 9 906 292
Hex bolt M12X1.5X80 10.9 (M3 M4)
4
Part number
Description
Quantity
33 10 8 090 474
Rear-axle differential with lock
1
33 32 6 760 374
Collar nut
2
F06, F1x
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07 11 9 906 460
Bolt with washer
2
26 11 7 526 322
External Torx screw with ribbed teeth
6
33 17 6 760 336
Hexagon screw with washer
1
31 20 6 795 249
Collar bolt with compression spring
2
33 32 6 768 354
Hexagon screw with collar
8
33 14 1 206 439
Circlip
2
18 30 7 597 650
Collar nut M8
4
26 11 7 527 475
Hex bolt M12X1.5X71-ZNS3
3
26 12 7 536 563
Self-locking nut M12X1.5-10 ZNS3
3
07 11 9 906 034
Screw 8X35
4
07 11 9 902 906
Hex bolt with washer M8X18-Z1-ZNS3
4
07 11 9 905 147
Hex bolt with washer M10X25-10-9ZNS3
4
07 11 9 905 655
Hex bolt M10X40-10-9ZNS3
6
33 30 6 787 062
Combination nut M14X1.5-10ZNNV
1
33 50 6 779 488
Hex bolt M14X105 ZNS3
1
33 20 7 572 719
Reinforcement D=10.5MM/ZNS3
3
Part number
Description
Quantity
83 22 2 357 992
Final-Drive Gear Oil MSP/A (1000ml)
As needed
Bulk Materials
WARRANTY INFORMATION
Reimbursement for this Service Action will be via normal claim entry utilizing the following
information:
Part One - Replacing the Rear Axle Differential
Defect Code:
0033990100
Completion “before” vehicle delivery to the customer or the vehicle is already in the
workshop
Labor Operation:
Labor Allowance:
Description:
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00 64 671
(F10) 48 FRU; (F06)
50 FRU; (F12) 52
FRU; (F13) 53 FRU
Replacing the rear axle differential
(Plus work)
00 64 671
(F87) 59 FRU; (F80;
F82, F83) 64 FRU
Replacing the rear axle differential
(Includes wheel alignment) (Plus work)
Or:
Completion after vehicle delivery to the customer
Labor Operation:
Labor Allowance:
Description:
00 64 147
(F10) 50 FRU; (F06)
52 FRU; (F12) 54
FRU; (F13) 55 FRU
Replacing the rear axle differential
(Main work)
00 64 147
(F87) 60 FRU; (F80,
F82, F83) 66 FRU
Replacing the rear axle differential
(Includes wheel alignment) (Main work)
Part Two - Rear Differential Fluid Service
Situation “A” (Under the BMW Maintenance Program after the First 1,200 Miles)
Defect Code:
85 99 05 01 MP
Standard Scope
Labor Operation:
Labor Allowance:
Description:
00 00 105
Refer to KSD2
Service – standard scope (Main
work)
Defect Code:
85 99 00 88 MP
Running-in Check at 1,200
Miles
Labor Operation:
Labor Allowance:
Description:
Refer to KSD2
Service – running-in check
(includes oil change in rear final
drive/rear axle differential)
(Center oil chamber)
And:
00 00 600
BMW recommends not exceeding the first 2,400 miles before performing the Service - running-in
check.
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Or:
Situation “B” (Under the original Service Action Campaign/ Running-In Check Previously
Performed and Claimed)
Defect Code:
00 33 99 01 00*
Labor Operation:
Labor Allowance:
Description:
Refer to KSD2
Oil change in rear final drive
(Center oil chamber) (Main work)
and replace the rear sub frame
bolts*
Refer to KSD2
Oil change in rear final drive
(Center oil chamber) (Plus work
– Vehicle is already in the
workshop) and replace the rear
sub frame bolts*
00 11 259
Or:
00 11 559
* Replace sub frame bolts according to VIN list only.
Note: *Campaign Defect Code 00 33 99 01 00 will not show “open ” after the
prerequisite repair for replacing the rear axle differential is submitted and credited.
However, this follow-up fluid service can still be claimed and submitted under the special
Campaign Defect Code as outlined above. Performed this service after the next 1,200 miles have
elapsed.
And:
Sublet – Bulk Materials (For Part One and Two)
Sublet Code 4
Reimbursement for the repairrelated bulk materials (BMW part
See sublet reimbursement
numbers, please do not use the
calculation below
part numbers for claim
submission)
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 on the repair order and in claim comment
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section.
Overlapping Labor – Associated and/or Other Repairs
If invoicing KSD2 flat rate labor operation codes for the additional repair work results in overlapping
labor being claimed, please invoice work time labor operation 00 50 000 for the additional time
(FRU) minus the overlap instead.
When work time labor operation 00 50 000 is used for work that will be claimed under a different
defect code, separate punch times are required.
Work time labor operation code 00 50 000 is not considered a Main labor operation.
On the repair order and in the claim comment section, please identify the labor operations that
labor operation code 00 50 000 replaces and itemize the claimed FRU amount.
CUSTOMER INFORMATION
FOR CUSTOMERS WHOSE VEHICLES ARE EITHER AT THE PORT OR AT THE DEALER
AND CANNOT BE DELIVERED
As part of ongoing quality control, BMW has initiated a service campaign to replace the rear
differential in certain BMW M models. Under extreme driving conditions it was determined that a
noise may originate from the vehicle’s limited slip clutch pack.
FOR CUSTOMERS WHO HAVE TAKEN DELIVERY AND HAVE QUESTIONS
Can I drive my vehicle aggressively before the repair? You can use your vehicle in all driving
conditions. In case of an excessive, groaning noise coming from the area of rear differential during
aggressive (tight) turns, contact your BMW service center.
Details about the wearing out prematurely (time/mileage/noise, etc) - what details can we
share? We do not have a defined time/mileage for a discs wear to start developing. It depends on
a driving style and road conditions.
How many vehicles have had premature wear? Only one known case from factory testing
Is this a safety issue? Not a safety issue
How will I be made aware when the parts are available for my car? Parts = Your Dealer will
contact you to schedule an appointment.
How long will it take for the parts arrive? Parts = We are receiving parts on a weekly basis. To
complete all vehicles it might take two months.
What’s going on? At BMW, we are committed to maintaining a level of automotive excellence that
exceeds your expectations. As part of ongoing quality control, BMW has initiated a service
campaign to replace to rear differential in certain BMW M models. Under extreme driving
conditions it was determined that a noise may originate from the vehicle’s limited slip clutch pack.
Can I continue to drive my car? YES
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When will it be repaired? Due to a unforeseen delay in obtaining replacement parts, we
anticipate that vehicle repairs will be completed by the end of October. We greatly appreciate your
patience!
Is this a recall? This is a Technical Campaign to be implemented at the next customer visit to the
workshop.
If customer complains about noise from rear of vehicle: Suggest that the customer have the
vehicle looked at by their authorized local BMW center.
ATTACHMENTS
View PDF attachment B330416RearAxleDifferentialDisclosure.
View PDF attachment REP 33 10 017 R&R Diff F8x Updated 8-25.
[ Copyright ©2016 BMW of North America, Inc. ]
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