Electrical - Various Electrical Sys. Failures,Possible No Start
SI B61 13 12General Electrical Systems
March 2013
Technical Service
This Service Information bulletin supersedes SI B61 13 12 dated April 2012.
[NEW] 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
[NEW] SITUATION
Various functions of the electrical system fail. In rare cases, the vehicle cranks but may not start.
[NEW] CAUSE
The 100-amp fuse (F502) in the rear power distribution box (Z3), mounted on the battery, has failed.
[NEW] 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 is not considered warranty.
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 shows the routing of the cable. If the cable is damaged, it needs to be replaced.
PARTS INFORMATION
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.
[NEW] Covered under the terms of the BMW New Vehicle/SAV Limited Warranty.
[NEW] Covered under the terms of the BMW Certified Pre-Owned program when the "Causal Part" is not a CPO-excluded item.
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.
not a CPO-excluded item.
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.