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SI B12 15 14
Engine Electrical Systems

September 2015
Technical Service

This Service Information bulletin supersedes SI B12 15 14 dated August 2014.
designates changes to this revision
SUBJECT

N55 with Double-Clutch Transmission: Idle Fluctuates when Stopped
MODEL

E82 (1 Series Coupe)
E88 (1 Series Convertible)
Produced to October 2013
With the N55 engine and option 2TC (7-speed Double-Clutch Transmission [DCT])
SITUATION

A customer may complain that after coming to a stop, the engine speed intermittently fluctuates
from about 500 RPM to 1,100 RPM.
This situation can be more noticeable when the air conditioner is on.
CAUSE

DME software (idle control adaptation)
PROCEDURE

Perform diagnostics using ISTA/D and work through the recommended test modules.
Program the vehicle using the latest version of ISTA/P.
Target integration level: E89X-14-07-501 or higher
After programming the DME adaptations must be cleared using ISTA 3.51 or later.
Test module path:
Service Functions / Power train / Engine electronics MEVD / Adjustment functions / Clear
adaptations
Important!
z

Select ABL DME: Clear adaptations

z

Select #2 “Reset adaptation values”(do not select #1 Reset adaptation values and
versions).

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z

When prompted, turn the ignition off, but let the vehicle go to sleep (Start/Stop button
light goes out).

z

The ignition can then be turned back on and the engine started.

Note that ISTA/P 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).
For information on programming and coding with ISTA/P, refer to CenterNet / Aftersales Portal /
Service / Workshop Technology / Vehicle Programming.
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.
This repair is also covered by the terms of the Federal and/or State-specific Emissions Warranty
(dependent on the vehicle’s model year, state of registration and its inclusion on the “modelspecific” list of covered components) that applies to the BMW model(s) listed.
The BMW Certified Pre-Owned Limited Warranty applies to BMW vehicles that have and are still
within the BMW Certified Pre-Owned coverage period, but beyond Emissions Warranty coverage
that applies.
Defect Code:

10 42 31 59 00

Labor Operation:

Labor Allowance:

Description:

00 00 006

Refer to KSD2

Performing “vehicle test” (with vehicle
diagnosis system – checking faults)

Refer to KSD2

Connect an approved battery
charger/power supply (indicated in
KSD 2 as Charging battery)

Refer to KSD2

Programming / encoding control unit(s)
(not including CAS)

Refer to KSD2

Programming / encoding control unit(s)
(with CAS)

And:
61 21 528
And:
61 00 710
Or:
61 00 720

If you are using a Main labor code for another repair, use the Plus code labor operation 00 00 556

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instead.
Refer to KSD2 for the corresponding flat rate unit (FRU) allowances
Vehicle Programming and Coding
If a control module was working properly and it fails to program correctly or requires initialization,
please claim this additional work with the applicable KSD2 labor operations under the defect code
listed above.
The diagnosis and repair of vehicles “arriving” with failed control modules or stored faults which
will cause them to fail during programming cannot be claimed under the defect code listed in this
bulletin.
Other Repairs
If other eligible and covered work is performed “prior” to programming and coding the vehicle,
claim this work with the applicable defect code and labor operations listed in KSD2.
[ Copyright ©2015 BMW of North America, Inc. ]

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