Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Toyota Corolla Cross and 2024 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.

COMPONENTS (REMOVAL)

Fig 1: K121F Continuously Variable Transaxle Assembly Removal Components (1 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1	PRECAUTION	-	See step 1	-	-
2	ALIGN FRONT WHEELS FACING STRAIGHT AHEAD	-	See step 2	-	-
3	DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL	-	-	-	-
4	NO. 1 ENGINE UNDER COVER ASSEMBLY	51410	-	-	-
5	REAR ENGINE UNDER COVER LH	51444A	-	-	-
6	REAR ENGINE UNDER COVER RH	51443C	-	-	-
7	DRAIN ENGINE COOLANT	-	-	See step 7	-
8	DRAIN TRANSFER OIL	-	-	See step 8	-
9	DRAIN CONTINUOUSLY VARIABLE TRANSAXLE FLUID	-	-	See step 9	-
10	FRONT DRIVE SHAFT ASSEMBLY LH	43420	-	-	-
11	FRONT DRIVE SHAFT ASSEMBLY RH	43410	-	-	-
12	PROPELLER SHAFT WITH CENTER BEARING ASSEMBLY	37100	-	-	-

Fig 2: K121F Continuously Variable Transaxle Assembly Removal Components With Torque Specifications (2 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002© TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
13	WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY	-	-	-	-
14	WATER GUARD PLATE	55734D	-	-	-
15	NO. 1 HEATER AIR DUCT SPLASH SHIELD SEAL	55737B	-	-	-
16	OUTER COWL TOP PANEL SUB-ASSEMBLY	55701J	See step 16	-	-
17	ECM	89661	-	-	-
18	AUXILIARY BATTERY	-	-	-	-
19	BATTERY CLAMP SUB-ASSEMBLY	74404A	-	-	-

Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N.m (kgf/cm, ft.lbf)

Fig 3: K121F Continuously Variable Transaxle Assembly Removal Components (3 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
20	TRANSMISSION CONTROL CABLE ASSEMBLY	33820B	See step 20	-	-
21	DISCONNECT ENGINE WIRE	82121	See step 21	-	-
22	NO. 2 WATER BY-PASS HOSE	16264D	-	-	-
23	INLET WATER HOSE	16262	-	-	-
24	FLYWHEEL HOUSING SIDE COVER	11363A	-	-	-
25	DISCONNECT ENGINE WIRE	82121	-	-	-
26	STARTER ASSEMBLY	28100	-	-	-
27	FUEL DELIVERY GUARD	23825	-	-	-

•

Non-reusable part

Fig 4: K121F Continuously Variable Transaxle Assembly Removal Components With Torque Specifications (4 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002© TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
28	ENGINE HANGER	-	See step 28	-	-
29	ENGINE SUPPORT BRIDGE	-	See step 29	-	-
30	FRONT SUSPENSION CROSSMEMBER SUB-ASSEMBLY	51201F	-	-	-
31	NO. 2 ENGINE MOVING CONTROL ROD	12364B	-	-	-
32	SUPPORT TRANSAXLE ASSEMBLY	-	See step 32	-	-

N.m (kgf/cm, ft.lbf): Specified torque

Fig 5: K121F Continuously Variable Transaxle Assembly Removal Components (5 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
33	PROPELLER SHAFT HEAT INSULATOR	37117B	See step 33	-	-
34	MANIFOLD STAY	17118	See step 34	-	-
35	FLYWHEEL HOUSING UNDER COVER	11361J	-	-	-
36	DRIVE PLATE AND TORQUE CONVERTER ASSEMBLY SETTING BOLT	32101G	See step 36	-	-

*a	Black Color: x1 Silver Color: x5	-	-
*	Precoated part	-	-

Fig 6: K121F Continuously Variable Transaxle Assembly Removal Components (6 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
37	ENGINE MOUNTING INSULATOR LH	12372A	See step 37	-	-
38	CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY	30400	See step 38	-	-
39	TORQUE CONVERTER ASSEMBLY	32000A	See step 39	-	-
40	TRANSAXLE HOUSING TYPE T OIL SEAL	30400Q	See step 40	-	-

•

Non-reusable part

Fig 7: K121F Continuously Variable Transaxle Assembly Removal Components (7 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
41	TRANSFER ASSEMBLY	36100	-	-	-
42	TRANSFER AND TRANSAXLE SETTING STUD BOLT	36100A	See step 42	-	-

•

Non-reusable part

Precoated part

Fig 8: K121F Continuously Variable Transaxle Assembly Removal Components (8 Of 9)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
43	ENGINE MOUNTING BRACKET LH	12325A	See step 43	-	-
44	WIRE HARNESS CLAMP BRACKET	-	-	-	-

Fig 9: K121F Continuously Variable Transaxle Assembly Removal Components (9 Of 9)

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
45	NO. 1 TRANSMISSION CONTROL CABLE BRACKET	33823	-	-	-
46	TRANSMISSION CASE PLUG ASSEMBLY	35150B	-	-	-
47	BREATHER PLUG SUB-ASSEMBLY	35141F	-	-	-
48	INSPECT TORQUE CONVERTER ASSEMBLY	-	See step 48	-	-
49	INSPECT DRIVE PLATE AND RING GEAR SUB-ASSEMBLY	-	See step 49	-	-

*A	for Type A	*B	for Type B
*1	BREATHER PLUG CAP	*2	BREATHER PLUG
•	Non-reusable part	-	-

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during the continuously variable transaxle assembly removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replacement Part or Procedure	Necessary Procedures	Effect/Inoperative Function When Necessary Procedures are not Performed	Link
Continuously variable transaxle assembly	Input transaxle compensation code into ECM CVT oil pressure calibration Perform road test to allow ECM to learn	Deterioration of fuel efficiency	for Initialization: Refer to INITIALIZATION [11/2023 - ] for Registration: Refer to REGISTRATION [11/2023 - ]
CVT fluid	ATF thermal degradation estimate reset	The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly	Refer to INITIALIZATION [11/2023 - ]
CVT fluid	Bleed air from oil pump (continuously variable transaxle assembly)	Stop and start system	Refer to REGISTRATION [09/2021 - ]
Front wheel alignment adjustment	Perform "Reset Memory" Perform "Calibration"	DTCs are stored ABS warning light illuminates Slip indicator light illuminates Electronically controlled brake system does not operate correctly	Refer to UTILITY [11/2022 - ]
Front wheel alignment adjustment	Reset memory	Dynamic torque control AWD system	Refer to CALIBRATION [09/2021 - ]
No. 2 steering intermediate shaft assembly	End position initial setting	Power steering system	Refer to END POSITION INITIAL SETTING [11/2022 - ]
Suspension, tires, etc.	Rear television camera assembly optical axis (Back camera position setting)	Parking assist monitor system	Refer to CALIBRATION [11/2022 - ]
Suspension, tires, etc.	Initialize headlight ECU sub-assembly LH	Automatic headlight beam level control system	Refer to INITIALIZATION [11/2022 - ]

WARNING:

Because the continuously variable transaxle assembly is extremely heavy, make sure to follow the work procedures described in the appropriate service information .

*a	Heavy object exceeding the capacity of the transmission jack

If work is not performed according to the procedures described in the appropriate service information , there is a danger that the transmission jack could drop and components could fall down.

When the engine is hot, do not touch high-temperature areas such as the engine or exhaust manifold.

Touching high-temperature areas such as the engine and exhaust manifold could result in burns.

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Front camera system	Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more.	Refer to INITIALIZATION [11/2022 - ]
Stop and start system	Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes)	Refer to PRECAUTION [11/2023 - ]

Learning completes when vehicle is operated normally

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Power door lock control system Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.	Refer to INITIALIZATION [11/2022 - ]
Power back door system	Fully close the back door by hand. HINT: Initialization is not necessary if the above procedures are performed while the back door is closed.	Refer to INITIALIZATION [09/2021 - ]
Air conditioning system	After the ignition switch is turned to ON, the servo motor standard position is recognized.	-