Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000YZJB
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 -           ]
Title: UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): OIL COOLER: REMOVAL; 2017 - 2020 MY Sienna [08/2016 -        ]

REMOVAL

PROCEDURE

1. PRECAUTION

NOTICE:

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Click here 2017 MY Sienna [08/2016 - 11/2017]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION 2018 - 2020 MY Sienna [11/2017 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

3. REMOVE BATTERY

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

4. REMOVE AIR CLEANER INLET ASSEMBLY

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

5. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): THROTTLE BODY: REMOVAL+

6. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

7. REMOVE AIR CLEANER CASE SUB-ASSEMBLY

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

8. REMOVE AIR CLEANER BRACKET

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

9. REMOVE FRONT WHEEL LH

10. REMOVE NO. 1 ENGINE UNDER COVER

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (INTAKE / EXHAUST): EXHAUST MANIFOLD: REMOVAL+

11. REMOVE FRONT FENDER APRON SEAL LH

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

12. DRAIN ENGINE COOLANT

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (COOLING): COOLANT: REPLACEMENT+

13. DISCONNECT NO. 3 WATER BY-PASS HOSE

(a) Slide the 2 clips and disconnect the No. 3 water by-pass hose from the transmission oil cooler.

NOTICE:

Use a container to catch any coolant which flows out of the No. 3 water by-pass hose and transmission oil cooler.

14. DISCONNECT NO. 2 INLET OIL COOLER HOSE

(a) Slide the clip and disconnect the No. 2 inlet oil cooler hose from the transmission oil cooler.

NOTICE:

Use a container to catch any automatic transaxle fluid which flows out of the No. 2 inlet oil cooler hose and transmission oil cooler.

15. DISCONNECT NO. 1 OUTLET OIL COOLER HOSE

(a) Slide the clip and disconnect the No. 1 outlet oil cooler hose from the transmission oil cooler.

NOTICE:

Use a container to catch any automatic transaxle fluid which flows out of the No. 1 outlet oil cooler hose and transmission oil cooler.

16. REMOVE TRANSMISSION OIL COOLER

(a) Remove the 3 bolts.

(b) Disengage the hook to remove the transmission oil cooler from the automatic transaxle case sub-assembly.

NOTICE:

Use a container to catch any coolant and automatic transaxle fluid which flows out of the transmission oil cooler.

17. REMOVE TRANSMISSION OIL THERMOSTAT

(a) Slide the 2 clips and disconnect the No. 1 transmission oil cooler hose assembly from the transmission oil thermostat.

NOTICE:

Use a container to catch any automatic transaxle fluid which flows out of the transmission oil thermostat and No. 1 transmission oil cooler hose assembly.

*1

No. 1 Transmission Oil Cooler Hose Assembly

*2

No. 1 Transmission Oil Cooler Hose

*3

No. 2 Outlet Oil Cooler Hose

(b) Slide the 2 clips and disconnect the No. 2 transmission oil cooler hose and No. 1 outlet oil cooler hose from the transmission oil thermostat.

NOTICE:

Use a container to catch any automatic transaxle fluid which flows out of the transmission oil thermostat, No. 2 outlet oil cooler hose and No. 1 transmission oil cooler hose.

(c) Remove the bolt and transmission oil thermostat from the transmission oil cooler stay.

NOTICE:

Use a container to catch any automatic transaxle fluid which flows out of the transmission oil thermostat.

18. DISCONNECT NO. 2 OUTLET OIL COOLER HOSE

(a) Remove the automatic transmission oil cooler tube clamp.

(b) Slide the clip and disconnect the No. 2 outlet oil cooler hose from the oil cooler tube assembly.

19. DISCONNECT NO. 1 TRANSMISSION OIL COOLER HOSE

(a) Slide the clip and disconnect the No. 1 transmission oil cooler hose from the oil cooler union sub-assembly.

20. REMOVE NO. 1 OIL COOLER WITHOUT HOSE TUBE SUB-ASSEMBLY

(a) Slide the clip and disconnect the No. 1 inlet oil cooler hose.

NOTICE:

Use a container to catch any automatic transaxle fluid which flows out of the No. 1 inlet oil cooler hose and transmission oil cooler.

(b) Remove the 2 bolts and oil cooler tube assembly to the automatic transaxle case sub-assembly and No. 3 engine mounting bracket.

(c) Slide the 3 clips and remove the No. 1 outlet oil cooler hose, No. 1 inlet oil cooler hose and No. 2 inlet oil cooler hose from the No. 1 oil cooler without hose tube sub-assembly.

*1

No. 1 Oil Cooler without Hose Tube Sub-assembly

*2

No. 1 Inlet Oil Cooler Hose

*3

No. 2 Inlet Oil Cooler Hose

*4

No. 1 Outlet Oil Cooler Hose