The power windows and/or power mirrors are inoperative. The LED on the headlight switch is flashing. There is a check control message for Windows / Mirrors / Headlights. There may also be a complaint of water in one or both headlights. One of the following fault codes may be stored:
9CBD – Communication with stepper motor box left defective
9CBE – Communication with stepper motor box right defective
9CC1 – Communication with mirror driver side defective
9CC2 – Communication with mirror passenger side defective / Right Stepper Motor Controller (SMC) signaling fault
9CCF – Communication with LIN control defective
Left and/or right headlight housing cover is not properly fitted allowing water ingress into the Stepper Motor Controller (SMC) connector.
CAUSE
Left and/or right headlight housing cover is not properly fitted allowing water ingress into the Stepper Motor Controller (SMC) connector.
PROCEDURE
Perform a vehicle test using ISTA to verify that the faults listed above are stored in the Footwell Module (FRM). 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.
Inspect the connector at each headlight (X13420 – Left and X13421 – Right) assembly for corrosion and replace as necessary.
Make sure the headlight access covers (1) are installed correctly.
Clear the faults and test the headlights for proper function.
PARTS INFORMATION
Part Number
Description
Quantity
61-13-6-931-864
12 POL. Socket housing
As needed
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle/SAV Limited Warranty.
Defect Code:
63 12 20 79 00
Labor Operation:
Labor Allowance:
Description:
00 00 006
Refer to KSD2
Performing “vehicle test” (with vehicle diagnosis system – checking faults)
Work time to inspect and repair connector(s) as necessary
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.
Even though work time labor operation code 63 99 000 ends in “000,” it is not considered a Main labor operation.
Work time (WT) labor operation 63 99 000 requires an individual punch time.
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EASY TO USE – Locate the vehicle’s OBD-II port (typically found under the steering wheel, near the dashboard, or inside the fuse box). Insert the 16-pin connector firmly into the port to ensure a secure physical connection. Power on the vehicle (some devices require the engine to be running, while others only need the ignition turned to the ‘ON’ position)—then the item will work. The USB cable is only for updates and is not needed when connected to the vehicle
Last update on 2026-05-23 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.
designates changes to this revision
New Vehicle/SAV Limited Warranty.
