Page 1 of 3

SB-10044023-2669
SI B61 13 12
General Electrical Systems

March 2013
Technical Service

This Service Information bulletin supersedes SI B61 13 12 dated April 2012.
designates changes to this revision
SUBJECT

100A Fuse in Rear Power Distribution Box Failed, Causing Electrical System Failure
MODEL

F25 (X3)
Vehicles produced from October 31, 2010 to January 30, 2012
SITUATION

Various functions of the electrical system fail. In rare cases, the vehicle cranks but may not start.
CAUSE

The 100-amp fuse (F502) in the rear power distribution box (Z3), mounted on the battery, has failed.
CORRECTION

Locate and repair the wiring harness issue.


Replace the rear power distribution box (Z3) if the 100-amp fuse (F502) has failed (the fuse is not
replaceable separately).

PROCEDURE

1. Perform a vehicle test using the latest ISTA (Integrated Service Technical Application) diagnostic software.
Note: When the ISTA system message displays:
“Battery voltage only “XX.XX” V. Please connect charger.”
Please note the displayed battery voltage reading in the repair order comments section.
2. If diagnosis leads to a faulty fuse in the rear power distribution box located on the battery, replace the power
distribution box. Refer to ISTA Repair Instructions “61 14 010 Removing and installing/renewing power
distribution box (on battery).”
3. Inspect the following areas for possible damage that might have caused the fuse to fail.
Damage found in the 2 areas listed below is not considered warranty.

http://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/15285.2.B611312.x... 4/4/2013

Page 2 of 3

4. X2 B+ Jump-starting point:
Check the metal brace located
near the jump point terminal for
signs of arcing. This can happen
when jump-starting or the
charging aid contacts the metal
brace along with the terminal.

5. B+ Battery cables that run
under the vehicle: Check the
battery cables that run under the
vehicle from the rear power
distribution box up to the engine
compartment for damage. This
can be the result of underbody
damage caused by an outside
source. The diagram to the left
shows the routing of the cable. If
the cable is damaged, it needs to
be replaced.

PARTS INFORMATION

Part Number

Description

Quantity

Refer to EPC

Power distribution box, rear

1

Refer to EPC

Repair wire for B+

1 (if needed)

WARRANTY INFORMATION

A. 100-Amp Fuse Replacement: Items #4 and #5
Fuse replacement for these items are not covered under the terms of the BMW New Vehicle/SAV Limited
Warranty or the BMW Certified Pre-Owned program.
B. The 100-Amp Fuse Replacement which is due to a Defect in Materials or Workmanship.
Covered under the terms of the BMW New Vehicle/SAV Limited Warranty.
Covered under the terms of the BMW Certified Pre-Owned program when the “Causal Part” is not a CPO-

http://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/15285.2.B611312.x... 4/4/2013

Page 3 of 3

excluded item.
Defect Code

Refer to KSD2

Enter the Defect Code for the Causal Part

Labor Operation:

Labor Allowance:

Description:

00 00 006

Refer to KSD2

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

Refer to KSD2

Charging battery

WT

Performing vehicle diagnosis – test module
(Work time)

WT

Troubleshooting electrical/electronic system

Refer to KSD2

Replacing power distribution box, rear

WT

Work time to replace repair wire for B+

and if necessary, also
61 21 528
and if necessary, also
61 00 006
and/or as necessary
61 00 009
and
61 14 510
and if necessary, also
61 99 000

Labor operation code 00 00 006 is a Main labor operation. If you are using a Main labor code for another repair,
use the Plus code labor operation 00 00 556 instead.
Refer to KSD2 for the corresponding flat rate unit (FRU) allowance. Enter the Chassis Number, which consists of
the last 7 digits of the Vehicle Identification Number (VIN). Click on the “Search” button, and then enter the
applicable flat rate labor operation in the FR code field.
Work time labor operation codes 61 00 006, 61 00 009 and 61 99 000 are not considered Main labor operation as
used above.
The work time (WT) labor operations require individual punch times.
[ Copyright ©2013 BMW of North America, Inc. ]

http://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/15285.2.B611312.x... 4/4/2013