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33 01 20_REAR AXLE SHUDDER AT SLOW SPEEDS

SIB 33 01 20
REAR AXLE SHUDDER AT SLOW SPEEDS

2020-09-28

MODEL
G14 (8 Series
G15 (8 Series Coupe)
Convertible)
Vehicles with S-02T4 M Sport differential (rear axle
differential with lock)

G16 (8 Series Gran
Coupe)

SITUATION
There is a shudder or jerking feeling coming from the rear of the vehicle at low speeds and low
engine loads while turning

CAUSE
Incorrect actuating pressure in the M-differential clutch plates.

CORRECTION
Replace the rear differential and program the vehicle with ISTA to I level 20-03-526 or higher.
Do not program the vehicle if it is already at 20-03-526 or higher.

PROCEDURE
1.

Confirm that the shudder is coming from the rear M-differential and not some other driveline
component.
2.
Replace the rear differential following Repair Instruction
33 10 014
Replacing the
rear axle M sports differential
3.
Determine the vehicle’s current I-level by either using AIR or the Key reader/ISPA NEXT
application, program the vehicle using ISTA 4.22.2x or higher (released March 2020)
only if the
vehicle is not at the minimum I level as described above.
Model
G14/15/16

Target Integration level
S18A-20-03-526 or higher

Note that ISTA will automatically reprogram and code all programmable control modules that do not have
the latest software.
Always connect a BMW-approved battery charger/power supply (SI B04 23 10) when performing
programming.
For information on programming and coding with ISTA, refer to DealerSpeed / TIS / Technical
Documentation / Diagnostics and Programming / Programming Documentation.

PARTS INFORMATION
Obtain and confirm the part numbers for your specific vehicle by entering the chassis number in either ETK
or AIR which takes into account specific equipment and/or options.
Part Number

Description

Quantity

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Refer to ETK

33 01 20_REAR AXLE SHUDDER AT SLOW SPEEDS

Final drive with differential

1

Refer to the ETK and the applicable repair instructions for one-time use fasteners and/or component
information regarding additional or replacement screws, gaskets, seals and fluids (drained) that need to be
installed/replaced and claimed.

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks or
the BMW Certified Pre-Owned Program for the items below that apply:
Defect Code:

3310023900

Creaking, rear axle differential when cornering (lock
differential) disruptive noises

Since the programming and encoding procedure can only be invoiced one time, if during this workshop visit
the affected vehicle shows one or more programming and encoding Technical Campaign repairs open, then:
Select one of these open Technical Campaigns to perform and submit for updating the vehicle to the
required I-level or higher (includes connecting an approved battery charger/power supply and
performing a vehicle test).
Please be sure to also perform any additional work (before and/or after) the selected campaign or
other campaign repairs require and/or close the remaining open programming and encoding
Technical Campaign repairs as outlined in the corresponding Service Information Bulletin.
For the replacement of the Final drive with differential:
Labor Operation

Description

Labor
Allowance

33 99 000

As needed, work time (WT) to confirm the shudder is
coming from the vehicle’s rear M-differential and not
some other driveline component (Vehicle is already in
the workshop)

WT

And:
33 10 514
And, as applicable:

Replacing the rear axle M sports differential

Refer to AIR

33 10 905

Additional work with active stabilizer (ARS) and integral
active steering (rear axle slip angle control)

Refer to AIR

Commissioning for self-locking differential

Refer to AIR

And:
33 60 506
Or:

Without an Open Programming and Encoding Technical Campaign
Labor Operation

Description

Labor
Allowance

00 00 006

Performing vehicle test (with vehicle diagnosis system –
checking faults) (Main work)

Refer to AIR

Performing vehicle test (with vehicle diagnosis system –
checking faults) (Plus work)

Refer to AIR

Connect an approved battery charger/power supply
(indicated in AIR as Charging battery)

Refer to AIR

Or:
00 00 556
And:
61 21 528

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And, as needed:
33 99 000

Work time (WT) to confirm the shudder is coming from
the vehicle’s rear M-differential and not some other
driveline component (Vehicle is already in the
workshop)

WT

And:
33 10 514
And, as applicable:

Replacing the rear axle M sports differential

Refer to AIR

33 10 905

Additional work with active stabilizer (ARS) and integral
active steering (rear axle slip angle control)

Refer to AIR

Commissioning for self-locking differential

Refer to AIR

And:
33 60 506
And, when applicable:

Program the vehicle with ISTA to I level 20-03-526 or higher (When required based on the above
repair Procedure information)
Labor Operation

Description

61 00 730

Programming/encoding control unit(s)

Labor
Allowance
Refer to AIR

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.
Refer to AIR for the corresponding flat rate unit (FRU) allowances.
Work time labor operation code 33 99 000 is not considered a Main labor operation’
For the above and for any addition work that is performed, as applicable to your center, please refer to SI
B01 01 20 or B01 07 20 for claiming your diagnosis work time, job/repair work time (WT), WT and the
repair-related explanation procedures.
Programming and Encoding - Vehicle Control Units (RO and Claim Comments Required)
The programming procedure automatically reprograms and encodes all vehicle control modules which do
not have the latest software I-level. If one or more control module failures occur during this programming
procedure:
Please claim this consequential control module related IRAP recovery procedure (when applicable as
required)/repair work under the defect code listed in this bulletin with the applicable AIR labor
operations.
Please explain this additional work (The why and what) on the repair order and in the claim comments
section
For control module failures that occurred prior to performing this programming procedure:
When covered under an applicable limited warranty, claim the applicable test plan and the
corresponding control module-related repair work using the applicable defect code and labor
operations in AIR (including diagnosis).
If other eligible and covered work is performed as a result of performing diagnosis, claim this work with the
applicable defect code and the labor operations that are listed in AIR (including diagnosis).

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QUESTIONS REGARDING THIS BULLETIN
Technical inquires
Warranty inquires
Parts inquiries

Submit feedback at the top of this bulletin
Submit an IDS ticket to the Warranty Department
Submit an IDS ticket to the Parts Department

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