NHTSA ID Number: 11028951
Manufacturer Communication Number: 26-EM-002H TSB
TSB/Document Date: 2026-02-24
Summary
Certain Santa Fe / Santa Fe XL (NC) vehicles equipped with 3.3L Lambda II GDI engines may exhibit abnormal engine noise or damage. This bulletin describes the procedure to inspect the engine and perform the proper repair based on the results of the inspection. Utilize the flowcharts as a guide to ensure the proper procedure and repair is performed. The warranty coverage for engine repair or replacement related to engine noise or damage has been extended to 15 years or 150,000 miles from the date of original retail delivery or date of first use, whichever occurs first. Warranty coverage is valid for original and subsequent owners.
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TSB/Document ID: 26-EM-002H TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-11
MFR Internal Campaign ID/Software Version: TXX8
Communication Type: Warranty Program/Extension
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
o Save a screenshot of the result.
o Inspect the oil cap condition to determine PASS or NO PASS.
• PASS – proceed to the next step.
• NO PASS – remove the rear bank rocker cover and provide images of the valvetrain and
inside of the cover. Include a sticky note of the repair date.
PASS
NO PASS
NOTICE
If the oil cap is in PASS region, rear bank rocker cover removal is NOT required for PA. However, the
PA department may still request valvetrain images if maintenance gaps are suspected.
If the oil cap is in the NO PASS region, remove the rear bank rocker cover and upload the images of
the valvetrain and inside the rear bank rocker cover to STUI with a sticky note with the date of repair.
•
Do NOT remove the front bank rocker assembly.
o Submit PA for engine replacement.
NOTICE
The PA department may request valvetrain images of the rear bank rocker cover if
maintenance gaps are suspected, even if the oil cap result is PASS.
o Upon PA approval, complete the remaining steps of the TSB.
o Check DTCs and perform the appropriate diagnostics service to ensure NO warning
lights are present.
o Use the proper operation code for the engine inspection and replacement.
TSB #: 26-EM-002H
Page 14 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
C. If BCT result is NO BCT: 1 or more cylinders may have been skipped during the BCT:
o Save a screenshot of the result.
o Record the error code in the Repair Order (RO).
o Follow the Skipped Cylinder STUI Video Submission on pages 18-21 of 25-EM006H (or latest version) to properly record a STUI video of the Skipped Cylinder Test.
o Do NOT remove the front bank rocker assembly.
o Submit a PA for the engine replacement.
NOTICE
The PA department may request valvetrain images of the RH rear bank rocker
cover if maintenance gaps are suspected, even if the oil cap result is PASS.
o Upon PA approval, complete the remaining steps of the TSB.
o Check DTCs and perform the appropriate diagnostics service to ensure NO warning
lights are present.
o Use the proper operation code for the engine inspection and replacement.
Rear Bank Rocker Cover Digital Documentation Guidelines:
1.
DIGITAL
DOCUMENTATION
Ensure the photo is clear and focused,
and matches the examples shown to the
right when submitting valvetrain images
via STUI.
Do NOT remove the front bank LH rocker
cover for valvetrain images. This can
disturb the high-pressure fuel system and
line. Claims may be subject to
chargeback if the front bank rocker cover
is removed.
TSB #: 26-EM-002H
Page 15 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Engine Replacement
NOTICE
Replace the Engine Sub-Assembly only if directed by the PA department per the Service
Procedure Flowchart.
1.
Remove the engine from the vehicle by
referring to the shop manual:
• Engine Mechanical System >
Engine and Transaxle Assembly >
Engine and Transaxle Assembly >
Repair procedures
i
Information
Record audio presets (XM, AM, FM, etc.)
before disconnecting the battery.
2.
Refer to the shop manual to transfer the following components:
• Intake and Exhaust Manifolds
o Follow 23-EM-002H (or latest version) if vehicle arrives with a seized or
damaged internal rotating component (see Step 6).
• Surge Tank
• Starter Assembly
• Drive Plate
• Full Drive Belt Kit (Idler, Belt Tensioner, Water Pump Pulley, Serpentine Belt)
• Water Temperature Control Assembly and Studs
• Cross-Over Coolant Pipe
• Fuel Rail, Injectors, and High-Pressure Fuel Pump
• Oil Level Rod and Guide Assembly
• A/C Compressor Assembly
• Front Transfer Case Assembly (if applicable)
• Engine Front Wiring Harness
• Roller Tappet for the High-Pressure Fuel Pump
• Oil Pressure Switch Extension Harness (some engines may come with or without the oil
pressure switch extension harness, verify before re-assembly)
i
Information
Certain removed parts from the old engine will need to be reinstalled to the new engine.
Refer to the shop manual to confirm which parts may be reused. Full part list of the service
kit will be in the parts bulletin.
TSB #: 26-EM-002H
Page 16 of 32
SUBJECT:
3.
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
During the removal of the front subframe from
the vehicle, loosen and unbolt the LH and RH
lower control arm ball joint assemblies (A & B).
i
A
Information
The lower control arm ball joints do NOT
need to be removed from the steering
knuckle as shown in the shop manual.
B
4.
During the replacement, install the applicable
injector tip seals based on the marking on
each injector. Since both seals are included in
the kit, use the table below to match the
applicable part.
Injector Tip Seal
Injector
Without “T”
Mark
35310 3C550
35310 3C570
35310 3C560
35310 3C580
With “T” Mark
35312 3C720
35312 3C720
35313 2T000
! CAUTION
Select the appropriate tip seal according to
the existing fuel injector part number.
Use of the incorrect tip seal may result
in a critical fuel leak.
i
Information
Tip-Seal Part Identification as shown on
the right.
P/N: 353132T000 is labeled.
P/N: 353123C720 is NOT labeled.
TSB #: 26-EM-002H
Page 17 of 32
SUBJECT:
5.
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Exchange the water temperature control
assembly studs (C) from the old engine to the
new engine.
D
C
Install the new water temperature sensor (D)
from the service kit.
6.
Refer to TSB 26-EM-001H (or latest version)
to verify the engine condition then perform the
recommended action to the applicable
components.
Surge Tank
Intake Manifold
7.
Reconnect and reinstall the front engine
harness.
TSB #: 26-EM-002H
Page 18 of 32
SUBJECT:
8.
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Reinstall the engine sub-assembly by referring
to the shop manual:
• Engine Mechanical System >
Engine and Transaxle Assembly >
Engine and Transaxle Assembly >
Repair procedures
NOTICE
If the engine had lower-end damage or
failure, check engine rotation:
•
•
9.
Inspect the starter motor for signs
of damage before reuse.
Do NOT reinstall a damaged
starter motor, replace if needed.
If the torque converter moved out of position,
gently push and rotate it back in until it is
seated 5/16 inch – 9/16 inch (8-14 mm) into
the transaxle.
NOTICE
If the torque converter is NOT fully
seated, the oil pump may be damaged
during reinstallation.
10.
Reconnect and reinstall the cooling system
parts.
Fill the system with 35-50% coolant/antifreeze,
diluted with distilled water.
TSB #: 26-EM-002H
Page 19 of 32
SUBJECT:
11.
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Fill the engine crankcase:
• Add 6.3 quarts of oil for the initial dry
fill. With the fuel system temporarily
disabled, crank the engine for a few
seconds to prime the lubrication system
before starting.
i
Information
5W-30 Full Synthetic, API SN/SN+/SP,
ILSAC GF4/GF5 (or higher)
12.
13.
Warm up the vehicle by starting the engine
and start the cooling system air bleeding
process by referring to the shop manual:
• Engine Mechanical System > Cooling
System > Coolant > Repair
procedures
o Check for leaks.
o After the engine reaches normal
temperature, turn OFF the
engine.
o Recheck and adjust oil level to
reach the ‘F’ mark.
DIGITAL
DOCUMENTATION
Using the STUI camera function, take a
photo of the new Engine Sub-Assembly
serial number located on the Front Bank
Rocker Cover (nearest to the front of the
vehicle).
Upload the photo to STUI.
NOTE: If the STUI camera function is
NOT used, write the last 6 digits of the
VIN and date of repair on a piece of
paper to include in the photo.
TSB #: 26-EM-002H
Page 20 of 32
SUBJECT:
14.
15.
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Perform the wheel alignment by referring to
the shop manual:
• Suspension System > Tires/Wheels >
Alignment > Repair procedures
DIGITAL
DOCUMENTATION
Using the STUI camera function, take a
photo of the completed alignment sheet
clearly showing the vehicle’s VIN and
date of repair.
Upload the photo to STUI.
NOTE: If the STUI camera function is
NOT used, write the last 6 digits of the
VIN and date of repair on a piece of
paper to include in the photo.
16.
Verify all fluids are filled and all quality checks
are completed:
• Set the customer’s audio presets.
• Erase any DTCs that may have been
triggered during the repair.
• Reset engine adaptive valves using
GDS.
• Confirm the vehicle properly operates.
17.
The service procedure is now complete.
TSB #: 26-EM-002H
Page 21 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Appendix: Operation Code Reference Guide
Op. Code 40D119I0 Flow Path:
TSB #: 26-EM-002H
Page 22 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op. Code 40D119I1 Flow Path (1 of 2 possibilities):
TSB #: 26-EM-002H
Page 23 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op. Code 40D119I1 Flow Path (2 of 2 possibilities):
TSB #: 26-EM-002H
Page 24 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op. Code 40D119I2 Flow Path:
TSB #: 26-EM-002H
Page 25 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op Code 40D119I3 Flow Path (1 of 2 possibilities):
TSB #: 26-EM-002H
Page 26 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op Code 40D119I3 Flow Path (2 of 2 possibilities):
TSB #: 26-EM-002H
Page 27 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op Code 40D119I4 Flow Path:
TSB #: 26-EM-002H
Page 28 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op Code 40D119I5 Flow Path (1 of 2 possibilities):
TSB #: 26-EM-002H
Page 29 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op Code 40D119I5 Flow Path (2 of 2 possibilities):
TSB #: 26-EM-002H
Page 30 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op Code 40D119I6 Flow Path:
TSB #: 26-EM-002H
Page 31 of 32
SUBJECT:
ENGINE NOISE INSPECTION & REPLACEMENT (WARRANTY EXTENSION TXX8)
Op Code 40D119I7 Flow Path:
TSB #: 26-EM-002H
Page 32 of 32
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