Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Replacement

REPLACEMENT

PROCEDURE

1. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH

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2. REMOVE NO. 3 ENGINE UNDER COVER

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3. REMOVE FRONT FENDER APRON SEAL LH

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4. REPLACE AUTOMATIC TRANSAXLE FLUID

(a) Lift the vehicle. [#1]

NOTICE:

Set the vehicle on a lift so that the vehicle is kept level when it is lifted up (make sure the tilt angle from the front to rear of the vehicle is within +/- 1°).

(b) Remove the refill plug and gasket from the automatic transaxle case sub-assembly. [#2]

(c) Using a T40 "TORX" socket wrench, remove the drain plug and O-ring from the transaxle housing. [#3]

(d) Using a 17 mm straight hexagon wrench, remove the overflow plug and O-ring from the transaxle housing and drain the automatic transaxle fluid. [#4]

(e) Measure the amount of automatic transaxle fluid drained. [#5] HINT: Add the same amount of automatic transaxle fluid in step [#8].

(f) Using a 17 mm straight hexagon wrench, install the overflow plug and a new O-ring to the transaxle housing. [#6] Torque: 47 N·m {479 kgf·cm, 35 ft·lbf}

(g) Using a T40 "TORX" socket wrench, temporarily install the O-ring and drain plug to the transaxle housing. [#7] HINT: Reuse the old O-ring as the drain plug will be removed again to adjust the automatic transaxle fluid level.

(h) Add automatic transaxle fluid to the refill hole using the same amount of automatic transaxle fluid drained in step [#5]. [#8] NOTICE: Use Toyota Genuine ATF WS.

(i) Temporarily install the gasket and refill plug to avoid automatic transaxle fluid spillage. [#9] HINT: Reuse the old gasket as the refill plug will be removed again to adjust the automatic transaxle fluid level.

(j) Lower the vehicle. [#10]

(k) Start the engine. [#11]

(l) Slowly move the shift lever from P to D, and then back to P. [#12]

HINT:

Slowly move the shift lever to circulate the automatic transaxle fluid through each part of the automatic transaxle assembly.

(m) Allow the engine to idle for 30 seconds to warm it up. [#13]

(n) Turn the engine switch off. [#14]

(o) Repeat steps [#1] to [#14].

(p) Repeat steps [#1] to [#10].

5. ADJUST AUTOMATIC TRANSAXLE FLUID TEMPERATURE (when Using the Techstream)

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6. ADJUST AUTOMATIC TRANSAXLE FLUID TEMPERATURE (when Not Using the Techstream)

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7. ADJUST AUTOMATIC TRANSAXLE FLUID LEVEL

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8. REBUILD WORK

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9. INSTALL FRONT FENDER APRON SEAL LH

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10. INSTALL NO. 3 ENGINE UNDER COVER

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11. INSTALL FRONT WHEEL OPENING EXTENSION PAD LH

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