SB-15-01-032

GROUP
NUMBER
CAMPAIGN
DATE
Technical Service Bulletin
15-01-032
MODEL(S)
SEPTEMBER 2015
2015
SONATA (LF)
SRS B1620 DIAGNOSTIC LOGIC UPDATE
(SERVICE CAMPAIGN TX8)
SUBJECT:
 IMPORTANT
*** Dealer Stock and Retail Vehicles ***
Dealers must perform this Service Campaign on all affected vehicles prior to customer retail delivery
and whenever an affected vehicle is in the shop for any maintenance or repair.
When a vehicle arrives at the Service Department, access Hyundai Motor America's "Warranty
Vehicle Information" screen via WEBDCS to identify open Campaigns.
When a vehicle
at the warning
Service light
Department,
access Hyundai
Motor America's
"Warranty 6
Description:
Thearrives
SRS airbag
on the instrument
panel illuminates
for approximately
Vehicleafter
Information"
screen
via WEBDCS
identify
seconds
the ignition
is turned
ON, and to
then
turns open
OFF.Campaigns.
During this time, the Airbag Control Unit
(ACU) conducts self-diagnosis. On certain vehicles, if the ACU senses sufficient vibration during the
diagnostic period (from a vehicle door being slammed, for example), the SRSCM may erroneously
detect a fault and illuminate the airbag warning light accompanied by DTC B1620 (internal fault). This
bulletin describes the service procedure to reprogram the ACU using GDS to update the B1620
diagnostic logic to the most recent revision.
NOTE: This condition does not pose a safety risk and has no effect on the ability of the ACU to properly
detect a collision and deploy the airbags/seat belt pretensioners if necessary.
Applicable Vehicles: Certain 2015 Sonata (LF)
Warranty Information:
MODEL
OP CODE
OPERATION
OP TIME
LF
50CA14R0
ACU UPGRADE
0.3 M/H
NOTE: Submit Claim on Campaign Claim Entry Screen
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
B1620 DIAGNOSTIC LOGIC UPDATE (SERVICE CAMPAIGN TX8)
SUBJECT:
ACU REPROGRAMMING PROCEDURE
 NOTICE
To verify if the vehicle is affected:
 Check the current version of the ACU ROM ID and compare it to the ROM ID information table
listed below before attempting to update the ACU.
 NOTICE
You must initially perform GDS ACU Update in Auto Mode.
 If the ACU Update starts but then fails in Auto Mode, perform the update in Manual Mode to
recover.
 Refer to the General Instructions found in TSB: 15-GI-001 (GDS Mobile) and 15-GI-002 (PC GDS).
GDS Information:
Event #
339
Description
LFA ACU UPGRADE
NOTE:
 Refer to the TSB 15-GI-001 for the tablet-based Mobile GDS ECU update procedures.
 Refer to the TSB 15-GI-002 for the PC-based GDS ECU update procedures.
 Select “AIRBAG (Event #1)” or “AIRBAG (Event #2)” as the system to reprogram.
ROM ID INFORMATION TABLE:
MODEL
ACU P/N
LF
95910-C2000
ROM ID
PRIOR
LF141401
LF144005
NEW
LF144605
MANUAL MODE PASSWORD INFORMATION TABLE:
MENU
PASSWORD
LFA ACU 95910-C2000
2000
TSB #: 15-01-032
Page 2 of 2