GROUP
BODY
ELECTRICAL

Technical Service Bulletin

DATE

NUMBER
19-BE-011H-1
MODEL(S)

NOVEMBER, 2019
SUBJECT:

ALL

BLIND SPOT DETECTION (BSD) OR
BLIND-SPOT COLLISION WARNING (BCW)

This TSB supersedes 19-BE-011H to include the notice of down level parts availability and
BSD/BCW radar angle measurement tool mounting methodology.
Description: The Blind Spot Detection (BSD) or Blind-Spot Collision Warning (BCW) is a system
that measures the speed of and distance from the following vehicles by using two magnetic wave
radar sensors attached in the rear bumper. The BSD/BCW detects vehicles within the blind spot zone
and gives off an alarm (visual and audible). The two magnetic radar sensors provide these functions
for BSD/BCW:
 Senses other vehicles in the BSD/BCW zone and turns on the BSD/BCW warning lamp for the
driver. The warning lamp starts blinking, along with an audible sound, when the driver turns
on the turn signal lamp to enter the lane where another vehicle is driving.
This bulletin describes the general operation of the BSD/BCW, provides a radar sensor
troubleshooting guide, and outlines the usage of the BSD/BCW system angle measurement tool.

NOTICE
In cases of DTC C2702/C2703 and the bracket(s) is confirmed damaged, then only replace
the bracket(s). See TSB 18-BE-005-1 for available down level BSD/BCW replacement parts.

Applicable Vehicles: All Vehicles Equipped with BSD/BCW
Warranty Information:
Normal Warranty Applies.

NOTICE
In cases of DTC C2702/C2703, if the BSD/BCW sensor(s) is confirmed to be damaged by
external impact or collision accident, BSD/BCW sensor(s) replacement will not be covered
under warranty.
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)

Tools Required for BSD/BCW Radar Sensor Angle Measurement:
TOOL NAME
IMAGE

BCW UNIT CORRECTION
TOOL SET

09958-3T500
(Call Bosch at 1-866-539-4248 to order extra kits or parts from the
kit listed below)
Components in Detail:
NO.
PART NUMBER

PART NAME

QTY.

1

099583T500

BCW Unit Correction Tool Set

1 SET

2

099583T010

Vertical Plumb

1EA

3

099583T070

Horizontal Measuring Device

1EA

4

099583T080

BCW Unit Fixing Adaptor

1EA

5

099583T090

Digital Protractor

1EA

6

099583T100

Digital Inclinometer

1EA

7

099583T120

Case, Manual, String, and
Rubber Ring

1EA

TSB #: 19-BE-011H-1

IMAGE

Page 2 of 11

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)

BSD/BCW GENERAL INFORMATION
ENVIRONMENTAL FACTORS THAT MAY CAUSE THE BSD/BCW SYSTEM TO MALFUNCTION

TSB #: 19-BE-011H-1

Page 3 of 11

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)

BSD/BCW RADAR SENSOR TROUBLESHOOTING GUIDE
If a vehicle has any of the active codes from below, follow the diagram below for troubleshooting
assistance:
 C270254 - Control Module Missing Calibration
 C270354 - Control Module Slave Calibration

 Replace only the bracket(s)
[Refer to TSB 18-BE-005-1]

***BSD/BCW Sensor Angle Specification:
BSD/BCW Sensor

Horizontal Angle

Manufacturer

(￠1,￠2 )

Azera (HG) 2015-2017 MY

Mando

65 +- 3 degrees

87.25 +- 1 degrees

Elantra (AD) 2017-2018 MY

Mando

54 +- 3 degrees

86.75 +- 1 degrees

Elantra GT (PD) 2018 MY

Mando

54 +- 3 degrees

Equus (VI) 2014-2016 MY

Mando

68 +- 3 degrees

86.25 +- 1 degrees
87.25 +- 1 degrees

Genesis Sedan (DH) 2015-2016 MY

Mando

68 +- 3 degrees

87.25 +- 1 degrees

Ioniq (AE, AE EV) 2017-2018 MY

Mobis

37 +- 2 degrees

90 +- 1 degrees

Santa Fe Sport (AN) 2014-2018 MY

Mobis

38 +- 2 degrees

90 +- 1 degrees

Santa Fe (NC) 2014-2018 MY

Mobis

37 +- 2 degrees

90 +- 1 degrees

Sonata (LF) 2015-2018 MY

Mobis

38 +- 2 degrees

90 +- 1 degrees

Sonata Hybrid (LF HEV, PHEV) 2016-2018 MY

Mobis

37 +- 2 degrees

90 +- 1 degrees

Model

TSB #: 19-BE-011H-1

Vertical Angle

Page 4 of 11

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)
BSD/BCW Sensor

Model

Manufacturer

Horizontal Angle (￠1,￠2 )

Vertical Angle

Tucson (TL) 2016-2018 MY

Mobis

37 +- 2 degrees

90 +- 1 degrees

Kona (OS) 2018 MY

Mando

55 +- 3 degrees

87.25 +- 1 degrees

BSD/BCW RADAR SENSOR HORIZONTAL ANGLE MEASUREMENT METHODOLOGY
ILLUSTRATION OF THE RADAR SENSORS HORIZONTAL ANGLE MEASUREMENT METHOD

A
Projection line parallel to the
radar sensor surface position.

B
Line is centered using the middle
of the front and rear emblem.

￠1 (Left Side)

￠2 (Right Side)

Horizontal Angle measurement
between the radar sensors
projection and the center line.

A

A

Left Side Radar Sensor

Right Side Radar Sensor

TSB #: 19-BE-011H-1

B

Page 5 of 11

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)

BSD/BCW RADAR VERTICAL AND HORIZONTAL ANGLE MEASUREMENT PROCEDURE
1.

Ensure the vehicle is on a flat even
surface.

NOTICE
This procedure is best performed in an
indoor environment for ease of viewing
the laser light.
2.

Follow the shop manual to remove the rear
bumper.

3.

Use the digital inclinometer to measure the
vertical angle from each radar sensor and
confirm if it is within specification.

If the vertical angle from both radar
sensors are within specification then
proceed to the next step to measure the
horizontal angle.

NOTICE
If the vertical angle(s) is not within
specification, then address it first
before continuing with measuring the
horizontal angles.
4.

Find the center point of the front of the

Masking Tape

vehicle as illustrated in the picture.

Use the center point of the front Hyundai
emblem.

NOTICE
Place masking tape underneath the
yellow vertical plumb to prevent
scratching the paint when removing
the tool from the vehicle body.
TSB #: 19-BE-011H-1

String Center of
Emblem

Page 6 of 11

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)

5.

Once the plumb and string are centered
with the front Hyundai emblem, place a
piece of tape under the plumb bob, then
use a permanent marker and mark the
center point as illustrated in the picture.

6.

Remove the vertical plumb from the front of
vehicle.

7.

Find the center point of the rear of the
vehicle as illustrated in the picture.

Use the center point of the rear Hyundai
emblem.

NOTICE
Place masking tape underneath the
yellow vertical plumb to prevent
scratching the paint when removing
the tool from the vehicle body.

TSB #: 19-BE-011H-1

Page 7 of 11

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)

8.

Once the plumb and string are centered
with the rear Hyundai emblem, place a
piece of tape under the plumb bob, then
use a permanent marker and mark the
center point as illustrated in the picture.

9.

Tie the green string to the black rubber
ring.

TSB #: 19-BE-011H-1

Page 8 of 11

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)

10. Carefully throw the black rubber ring
attached to the green string from under the
rear of vehicle to the front. Align the green
string to the front center point (a) and the
rear center point (b) and tape down the
string at about 6 ft. away from the rear of
the vehicle (c) as illustrated in the picture.

11. Attach the fixing adapter to the radar
sensor.

To attach the tool, align it vertically to the
radar sensor and hand tighten the two
handles by turning them clockwise.

TSB #: 19-BE-011H-1

Page 9 of 11

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)

NOTICE
On some vehicles the Blind-Spot radar
plastic shield must be removed,
otherwise the laser clamp will not be
able to clamp onto the radar.
After measuring the mounting angles,
ensure the plastic shield is reinstalled
back onto the radar module.

12. Insert the horizontal measuring device, turn
the laser ON (select the switch which
displays a line), and aim the light to cross
the string.

Light ON switch

Ensure the metal side is placed against the
fixing adapter.

Metal side

TSB #: 19-BE-011H-1

Page 10 of 11

SUBJECT: BLIND SPOT DETECTIONS (BSD) OR BLIND-SPOT COLLISION WARNING (BCW)

13. Use the digital protractor to measure the
projected laser line to the green string to
find the horizontal angle as illustrated in the
picture.
In the example to the right the angle is 36.8
degrees.
Measure the angle for both right and left
sides.
NOTE: Follow the link from below for an
example of angle measurement:
https://www.youtube.com/watch?v=E12RK
9qiNXc
14. Connect the mobile GDS and select “BSD
Radar Calibration”. Follow the guided
instructions on the mobile GDS for further
assistance with validating the BSD/BCW
angles.

15. After completing the angle measurement
procedure, perform a DTC scan using the
GDS to confirm there are no DTC(s). If no
DTC(s) were incurred, then confirm
BSD/BCW system is functioning
normally.
NOTE: Follow the link from below for an
example of BSD/BCW operation:
https://www.youtube.com/watch?v=r7Bpt6
WBuwM

TSB #: 19-BE-011H-1

Page 11 of 11