Page 1 of 3

SI B66 24 16
Drivers Assistance, Remote Control Systems

January 2017
Technical Service

BLINDSPOT DETECTION WARNING: FALSE
ACTIVATION
MODEL
G12 (7 Series
Sedan)
Affected vehicles include SA337 (M sport package) or SA715 (M aerodynamic package) in
combination with SA5AT (Active Driving Assistant Plus) or SA5AS (Active Driving Assistant).
Produced to October 1, 2016.

SITUATION
Driver Assistance system issues Blind Spot Detection warnings when no other vehicle is present:
z

Yellow triangle illuminated on the side view mirror housing.

z

Steering wheel vibration activated during lane change.

z

Short steering intervention during lane change after actuation of turn signal.

CAUSE
Incorrect detection of Blind Spot Warning sensor (HC2-sensor). The radar waves are incorrectly
scattered

CORRECTION
Run diagnosis in ISTA 4 and follow the appropriate test.
Install an HC2 sensor shield.

PROCEDURE
For conditions that are similar to the situation described:
1. Run diagnosis with ISTA and work through corresponding test module for related fault codes
in the SWW system.
Did ISTA identify root cause?
YES- follow diagnostic recommendations.
NO – Obtain sensor shield (detailed in parts list below), then continue to step 2.

https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/391... 2/5/2017

Page 2 of 3

2. Remove the rear bumper panel following repair
instructions REP 5112156 – removing and
installing rear bumper panel.
3. Install the sensor shield as shown in the picture.
This sensor shield prevents the incorrect
scattering of the radar signals at the rear bumper,
which causes false warnings.
4. Reassemble the vehicle and retest.
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 / TIS / Technical
Documentation / Diagnostics and Programming / Programming Documentation.

PARTS INFORMATION
Part Number

Description

Quantity

51 12 8 075 327

Left side HC2 sensor shield

1

51 12 8 075 328

Right side HC2 sensor shield 1

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light
Trucks.

Defect Code:

6632001400

Labor Operation:

Labor Allowance:

Description:

00 00 006

Refer to KSD2

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

Refer to KSD2

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

Or:
00 00 556
And:
Connect an approved battery

https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/391... 2/5/2017

Page 3 of 3

61 21 528

Refer to KSD2

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

Work time (WT)

Performing vehicle diagnosis –
test module

Refer to KSD2

Removing and installing rear
bumper panel

2 FRU

Work time to install HC2 sensor
shields

And, as necessary:
61 00 006
And:
51 12 656
And:
66 99 000

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) allowances.
Work time labor operation code 61 00 006 is not considered a Main labor operation; however, it
does require an individual punch time and an explanation on the repair order and in the claim
comments section.
Work time labor operation code 66 99 000 is not considered a Main labor operation. Also, since the
“work time” FRU allowance to be claimed is specified, a separate punch time is not required.
Other Repairs
Other work that is performed as a result of performing the ISTA diagnostics and related test plans:
z

When covered under an applicable limited warranty, claim this other repair work using the
applicable defect code and labor operations in KSD2/AIR.

[ Copyright ©2017 BMW of North America, Inc. ]

https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/391... 2/5/2017