3/2/2021

51 13 18_LIN BUS FAULTS WITH EXTERIOR REARVIEW MIRROR GLASS DAMAGE

SIB 51 13 18
LIN BUS FAULTS WITH EXTERIOR REARVIEW MIRROR GLASS
DAMAGE

2021-02-24

This Service Information Bulletin (Revision 6) replaces SI B51 13 18 dated February 2021.
What’s New (Specific text highlighted):
Procedure- RW inspection label and production date removed

MODEL
E-Series
F39
G20
G29

Model Description
X2 Sports Activity Coupe
3 Series Sedan
Z4 Roadster

SITUATION
Any or all of these conditions may be present:
A. The exterior rearview mirror glass is discolored or cracked
B. The power windows and folding mirrors may not operate
C. One or more of the following LIN bus faults are stored in the BDC (Body Domain Controller):
D90C03 LIN bus master B: short circuit – BDC
D90C04 LIN bus master B: No communication - BDC
D90C05 LIN bus master B: Communication failed – BDC
D90D07 Operating facility switch block (LIN): Missing LIN slave
D90D0A exterior rearview mirror left (LIN bus): Absent LIN slave – BDC
D90D0D exterior rearview mirror right (LIN bus): Absent LIN slave – BDC
804246 exterior rearview mirror left (LIN bus): Heating or electrochrome: faulty – BDC
804256 exterior rearview mirror right (LIN bus): Heating or electrochrome: faulty – BDC
804265 exterior mirror left or right: Excess temperature — BDC
804260 exterior mirror left or right: Overvoltage — BDC
804261 exterior mirror left or right: Undervoltage — BDC

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51 13 18_LIN BUS FAULTS WITH EXTERIOR REARVIEW MIRROR GLASS DAMAGE

CAUSE
Faulty exterior rearview mirror electronics have created a short on the LIN bus, damaging the mirror glass
and causing functional errors in power window and exterior mirror operation.

CORRECTION
Replace the mirror electronics in the exterior mirror.

PROCEDURE
For conditions similar to those described:
1. Test the operation of the power windows, side rearview mirror adjustment, and side rearview mirror
folding functions. Inspect the side rearview mirror glass on both sides for damage as shown in the photo
above.
Is a fault or damage found in one or more of those areas?
Yes: Proceed to step 2.
No: Continue diagnostics using ISTA, this bulletin does not apply.
2. Perform a vehicle test to check for faults. If one or more of the following fault codes are stored, proceed
to step 3.
D90C03 LIN bus master B: short circuit – BDC
D90C04 LIN bus master B: No communication - BDC
D90C05 LIN bus master B: Communication failed – BDC
D90D07 Operating facility switch block (LIN): Missing LIN slave
D90D0A exterior rearview mirror left (LIN bus): Absent LIN slave – BDC
D90D0D exterior rearview mirror right (LIN bus): Absent LIN slave – BDC
804246 exterior rearview mirror left (LIN bus): Heating or electrochrome: faulty – BDC
804256 exterior rearview mirror right (LIN bus): Heating or electrochrome: faulty – BDC
804265 exterior mirror left or right: Excess temperature — BDC

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51 13 18_LIN BUS FAULTS WITH EXTERIOR REARVIEW MIRROR GLASS DAMAGE

804260 exterior mirror left or right: Overvoltage — BDC
804261 exterior mirror left or right: Undervoltage — BDC

3. Replace the mirror electronics of the affected mirror following repair instructions REP 67 13 526
“Replacing mirror electronics for electrically adjustable exterior mirror left or right”.
4. Replace the mirror glass, if damaged.

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
Refer to ETK/AIR
And/or:
Refer to ETK/AIR
And, if necessary:
Refer to ETK/AIR
And/or:
Refer to ETK/AIR

Description
Mirror electronics, left

Quantity
1 if necessary

Mirror electronics, right

1 if necessary

Mirror glass (left)

1 if necessary

Mirror glass (right)

1 if necessary

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks.
Mirror electronics, outside rearview mirror incorrect
connection / contact fault

Defect Code:

6713025000

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

Support voltage of the vehicle electrical system /
recharge vehicle electrical system battery

Refer to AIR

Replacing mirror electronics for electrically adjustable
rearview mirrors, left or right (Plus work) (including
replacing the mirror glass as necessary)

Refer to AIR

Replacing mirror electronics for both electrically
adjustable rearview mirrors (Plus work) (including
replacing the mirror glasses as necessary)

Refer to AIR

Or:
00 00 556
And:
61 21 528
And:
67 13 526
Or:
67 13 531

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.

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51 13 18_LIN BUS FAULTS WITH EXTERIOR REARVIEW MIRROR GLASS DAMAGE

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), RO/Claim WT and/or repair explanation procedures, unless otherwise
required by State law.

QUESTIONS REGARDING THIS BULLETIN
Technical inquiries
Warranty inquiries
Parts inquiries

Submit feedback at the top of this bulletin
Please contact the Warranty department by either using the Live
Chat that’s available in the Warranty Documentation Portal or
through IDS by selecting Coverage, Policy, Coding Questions and
Mileage Corrections.
Submit an IDS ticket to the Parts Department

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