GROUP

NUMBER

CAMPAIGN

Technical Service Bulletin

SUBJECT:

18-01-001

DATE

MODEL

January, 2018

AZERA (HG)
SONATA (LFA)
SANTA FE SPORT (AN)
SANTA FE (NC)
TUCSON (TL)
SONATA (LF HEV/PHEV)

INHIBITOR SWITCH REPLACEMENT (SERVICE CAMPAIGN T2M)

This TSB supersedes TSB 17-01-064 to add additional models.

 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.
Description: This bulletin describes the service procedure to replace the inhibitor switch.
A possible symptom is Diagnostic Trouble Code P0705 (Transmission Range Sensor Circuit).

Applicable Vehicles:
2017
2017
2017~18
2017~18
2017~18
2017
2017

Azera (HG)
Sonata (LFA)
Santa Fe Sport (AN)
Santa Fe (NC)
Tucson (TL)
Sonata Hybrid (LF HEV)
Sonata Plug-in Hybrid (LF PHEV)

PARTS INFORMATION:

MODEL
Azera (HG)
Sonata (LFA)
Santa Fe Sport (AN)
Santa Fe (NC)
Tucson (TL)
Sonata Hybrid (LF HEV)
Sonata Hybrid Plug-in (LF PHEV)

PART NUMBER

DESCRIPTION

427003B700QQH

Inhibitor Switch

PHOTO

Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet Repair

AUTOMATIC TRANSAXLE INHIBITOR SWITCH

SUBJECT:
WARRANTY INFORMATION:
MODEL

OP CODE

Sonata (LFA)

70C097R2

Santa Fe Sport (AN) (5NM)*

70C097R3

Santa Fe Sport (AN) (5XY)*

70C097R4

Azera (HG)
Santa Fe (NC)

70C097R0

OPERATION

Replace
inhibitor
switch

OP
TIME

CAUSAL
PART

NATURE CAUSE
CODE
CODE

0.4

427003B700

I3A

ZZ3

Tucson (TL)
Sonata (LF HEV)
1.1
70C097R1
Sonata (LF PHEV)
NOTE 1: * = 1ST three digits of VIN
NOTE 2: Submit claim on Campaign Claim Entry Screen.
NOTE 3: Additional coolant, if necessary, is included in Labor Operation 70C097R1.
NOTE 4: If a part is found in need of replacement while performing this TSB and the affected part
is still under warranty, please submit a separate claim using the same Repair Order.
SERVICE PROCEDURE:

1.

Apply the parking brake.
Turn the ignition to the ON position and move
the shift lever to the N position.
Turn the ignition switch to the OFF position.

2.

GO TO STEP 3 (PAGE 3) FOR:
 Azera (HG)
 Santa Fe Sport (AN)
 Santa Fe (NC)
 Sonata (LFA)
 Tucson (TL)

TSB #: 18-01-001

GO TO STEP 6 (PAGE 4) FOR:
 Sonata Hybrid (LF HEV)
 Sonata Plug-in Hybrid (LF PHEV)

Page 2 of 8

AUTOMATIC TRANSAXLE INHIBITOR SWITCH DTC

SUBJECT:

3.

FOR THE FOLLOWING VEHICLES:
 Azera (HG)
 Santa Fe Sport (AN)
 Santa Fe (NC)
 Sonata (LFA)
 Tucson (TL)
Open the hood and remove the plastic tabs and
remove the air duct.

4.

Remove the negative and positive battery
cables.
Remove the battery hold down bolt and remove
the battery.
Torque: 7~9 lb-ft (1.0~1.2 kgf.m, 10~12 N.m)

NOTICE

5.

Record the preset radio stations
and reset after repairs are
completed.
.
Remove 2 bolts to the air cleaner and remove
the air cleaner.
Remove 4 bolts to the battery tray and remove
the battery tray.
Torque: 7~9 lb-ft (1.0~1.2 kgf.m, 10~12 N.m)
Move the battery tray aside to gain access to
the inhibitor switch.
NOTE: GO TO STEPS 14~17 TO REPLACE
THE INHIBITOR SWITCH.

TSB #: 18-01-001

Page 3 of 8

AUTOMATIC TRANSAXLE INHIBITOR SWITCH

SUBJECT:

6.

FOR THE FOLLOWING VEHICLES:
 Sonata Hybrid (LF HEV)
 Sonata Plug-in Hybrid (LF PHEV)
Remove the plastic tabs and remove the air
duct.

7.

Put on insulation gloves.
Open the trunk and remove the carpet.
Remove the access cover.
Pull the green tab outward and pull out the
safety plug.

8.

!

CAUTION

Without depressing the brake pedal, push the Start-Stop button 2 times to power the
cluster.
Attach a GDS and select Data Analysis, BMS menu and Inverter Capacitor Voltage.
Confirm the Inverter Capacitor Voltage is less than 30V.
 If less than 30V, the system voltage is safe for the technician. Go to Step 9.
 If more than 30V, wait until the voltage is below 30V. Go to Step 9.

TSB #: 18-01-001

Page 4 of 8

SUBJECT:

9.

AUTOMATIC TRANSAXLE INHIBITOR SWITCH DTC

Record the preset radio stations and reset after
repairs are completed.
Disconnect the negative battery cable.
Torque: 7~9 lb-ft (1.0~1.2 kgf.m, 10~12 N.m)

10. Disconnect the breather hose and the air duct.
Disconnect the intake air temperature sensor.
Loosen the clamp on the air duct.
Disconnect two bolts that secure the air cleaner
and remove the air cleaner.
Torque: 7~9 lb-ft (1.0~1.2kgf.m, 10~12 N.m)

11. Loosen the cap on the reservoir.
Raise the vehicle on a hoist.
Remove the plastic undercover below the
engine and transmission.
Locate the hose under the hybrid radiator on the
driver’s side of the vehicle.
Remove the clamp and pull the hose off to drain
the coolant from the reservoir.
NOTE: Save the coolant in a clean container.
Reinstall the hose and clamp.
Reinstall the undercover.

TSB #: 18-01-001

Page 5 of 8

AUTOMATIC TRANSAXLE INHIBITOR SWITCH

SUBJECT:

12. Remove two bolts to the HPCU protector and
remove the cover.
Remove the clamps to the coolant hoses and
remove the hoses.
Remove the ground cable.
Remove 2 bolts and 1 nut that secure the
reservoir and remove the reservoir.

13. Remove the power cables:
 Yellow arrow: Pull out yellow tab, press tab
 Red arrow: Press black tab on latch
 White arrow: Press black tab
Remove 3 bolts and remove the HPCU.
(If necessary, refer to the Sonata Hybrid Shop
Manual, Hybrid Control System, Hybrid Control
System, HPCU, Repair procedure).

14. NOTE: FOR ALL MODELS:
Disconnect the inhibitor switch connector (A)
Remove the shift cable mounting nut (B).
Remove the nut (C) and washer and remove the
manual control lever (D).

!

B

CAUTION

Do not use an impact gun.

C
A

TSB #: 18-01-001

D

Page 6 of 8

SUBJECT:

AUTOMATIC TRANSAXLE INHIBITOR SWITCH DTC

15. Remove 2 mounting bolts (E) and remove the
inhibitor switch assembly.
Install the new inhibitor switch assembly to the
transaxle and tighten the mounting bolts.

E
E

0
0

Torque: 7~9 lb-ft (1.0~1.2 kgf.m, 10~12 N.m
Reconnect the inhibitor switch connector.

16. Install the manual control lever, washer and nut
to the new inhibitor switch.
Insert SST 09480-A3800 guide pin or 5mm bolt
in the alignment hole.

Tighten the nut to specification.
Torque: 13~18 lb-ft (1.8~2.5 kgf.m/18~24 N.m)
CAUTION: Do not use an impact gun.
17. Confirm the shift lever is in the N position.
Install the shift cable nut and tighten the nut (B)
to specification.
Torque: 6~9 lb-ft (0.8 ~ 1.2 kgf.m, 8~12 N.m)

B

Remove the SST or 5mm bolt from the
alignment hole.
GO TO STEPS 20~21 FOR:
Azera (HG), Sonata (LFA), Santa Fe Sport (AN),
Santa Fe (NC), and Tucson (TL)

TSB #: 18-01-001

Page 7 of 8

SUBJECT:

AUTOMATIC TRANSAXLE INHIBITOR SWITCH

18. FOR:
 Sonata Hybrid (LF HEV)
 Sonata Plug-in Hybrid (LF PHEV)
Install 3 bolts that secure the HPCU.
Torque: 14~22 lb-ft (2~3 kgf.m, 20~29 N.m)
Reconnect the power cables and ground cable.

19. Install 2 bolts and 1 nut that secure the coolant
reservoir.
Torque: 3~4 lb-ft (0.4~0.6 kgf.m, 4~6 N.m)
Reinstall the coolant reservoir and hoses.
Refill the coolant.
Attach a GDS and perform air bleeding. Select
S/W Management, HEV Motor Control
System and Electric Water Pump Control.

20. NOTE: FOR ALL MODELS:
Reinstall all the removed parts in reverse order of removal.
Reset the preset radio stations.
21. Move the shift lever through P, R, N and D and confirm the indicator lights on the shift lever and
cluster illuminate.
Drive the vehicle to confirm the transmission shifts correctly.

TSB #: 18-01-001

Page 8 of 8