19-BD-009H-1

GROUP
NUMBER
Body
19-BD-009H-1
DATE
Technical Service Bulletin
MODEL(S)
December 2019
Sonata (LFa)
TRUNK LID TORSION BAR SERVICE GUIDE
AND WARRANTY EXTENSION (TXXF)
SUBJECT:
This TSB supersedes 19-BD-009H by including the warranty extension information and
updating the parts information.
Description: On certain Sonata (LF) vehicles equipped with smart trunk, the trunk lid may not open to
the desired height when using the smart trunk feature. Follow the procedure in the bulletin to inspect
the trunk lid opening height and replace the torsion bars if required.
The warranty coverage for the trunk lid torsion bars has been extended to 78 months or 78,000 miles
from the date of original retail delivery or date of first use, whichever occurs first, and is valid for
original and subsequent owners.
Applicable Vehicles: 2015 ~ 2017 model year Sonata (LFa) equipped with Smart Trunk Feature
Parts Information:
PART NAME
PART NUMBER COLOR LABEL
BAR-TRUNK LID HINGE
TORSION LH (Non-LED)
79273-C1010
White
BAR-TRUNK LID HINGE
TORSION RH (Non-LED)
79283-C1010
Yellow
BAR-TRUNK LID HINGE
TORSION LH (LED)
79273-C2000
Green
BAR-TRUNK LID HINGE
TORSION RH (LED)
79283-C2000
Pink
COMMENT
IMAGE
For vehicles with
non-LED tail lamps
For vehicles with
LED tail lamps
Warranty Information:
MODEL OP CODE
Sonata
(LFa)
79273R00
OPERATION
BAR-TRUNK LID
HINGE TORSION
OP TIME
0.3 M/H
CAUSAL PART
79273-C1010
79283-C1010
79273-C2000
79283-C2000
NATURE
CODE
CAUSE
CODE
I14
ZZ3
Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service
Advisors, Technicians, Body Shop Manager, Fleet Repair
TORSION BAR SERVICE GUIDE AND WARRANTY EXTENSION (TXXF)
SUBJECT:
Inspection Procedure:
1. Using the key fob, perform an open and close
cycle of the trunk lid ten times.
2. Open the trunk lid and measure the trunk
opening height using a ruler or measuring
tape. The measurement should be taken from
the center of the bumper to the bottom of the
trunk lid.
NOTICE
To assist in taking an accurate measurement,
place a thin piece of cardboard on the bumper
to accurately measure the opening height,
vertically along the trunk lid opening axis.
3. If the trunk lid opens more than 7.5 inches
(190.5 mm), no further action is required. The
trunk is functioning properly. The inspection
procedure is complete and submit for
applicable labor.
If the trunk lid does not open more than 7.5
inches (190.5 mm), proceed to step 4 to
replace the torsion bars.
!
WARNING
There is an increase in tension while holding the vice grips after
disconnecting the hinge from the torsion bar. If caution is not taken there
may be a risk of injury.
TSB #: 19-BD-009H-1
Page 2 of 5
SUBJECT:
SUBJECT:
TORSION BAR SERVICE GUIDE AND WARRANTY EXTENSION (TXXF)
4. After opening the trunk, use a vice grip to push
down on the outer side of the torsion bar away
from the hinge (A).
A
B
Ensure the vice grip holds on to the outer
edge of the torsion bar, outer side of the hinge
(B).
5. Pull the vice grips downward to release the
hinge (A) from the torsion bar and push the
hinge toward the outside of the trunk.
TSB #: 19-BD-009H-1
A
Page 3 of 5
SUBJECT:
SUBJECT:
TORSION BAR SERVICE GUIDE AND WARRANTY EXTENSION (TXXF)
6. After releasing the hinge (A) from the torsion
bar, slowly lift the torsion bar held by the vice
grip and release the vice grip.
A
7. Disconnect the released torsion bar from the
center clip (C).
C
8. Remove the loose torsion bar from the
mounting point on the opposite side and then
remove from the vehicle.
!
WARNING
After removing the first torsion bar, place a
prop rod that is approximately 5 feet long to
hold the trunk lid open while performing the
procedure.
TSB #: 19-BD-009H-1
Page 4 of 5
SUBJECT:
TORSION BAR SERVICE GUIDE AND WARRANTY EXTENSION (TXXF)
SUBJECT:
9. Perform the same removal process to the
other torsion bar mentioned above to the
opposite side.
10. Install the new torsion bars in reverse order of
the removal.
NOTICE


The white/green labeled torsion bar is
installed to the top of the clip.
The yellow/pink labeled torsion bar is
installed to the bottom of the clip.
Vehicles with LED tail lamps
Vehicles with non-LED tail lamps
Green labeled torsion bar on top
(P/N: 79273-C2000)
Pink labeled torsion bar on bottom
(P/N: 79283-C2000)
White labeled torsion bar on top
(P/N: 79273-C1010)
Yellow labeled torsion bar on bottom
(P/N: 79283-C1010)
11. Check for proper operation of the trunk by
performing an open and close cycle five times
using the key fob. Perform the same
measurements in step 2 and 3 to confirm that
the proper specification is met.
12. The service procedure is now complete.
TSB #: 19-BD-009H-1
Page 5 of 5
SUBJECT: