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

INSTALLATION

PROCEDURE

1. INSTALL SLIDING ROOF HOUSING ASSEMBLY

(a) Loosen the 10 bolts of the brackets of the sliding roof housing assembly.

(b) Temporarily install the sliding roof housing assembly with the 6 nuts and 8 bolts.

(c) Tighten the 2 nuts.

HINT:

Tighten the 2 nuts in the order shown in the illustration.

Torque:

5.5 N·m {56 kgf·cm, 49 in·lbf}

(d) Tighten the 4 nuts.

Torque:

5.5 N·m {56 kgf·cm, 49 in·lbf}

(e) Tighten the 18 bolts to install the sliding roof housing assembly.

Bolt (A)

Bolt (B)

HINT:

The brackets can be installed in any order. The bolts must be tightened in the order of (A) then (B).

Torque:

8.0 N·m {82 kgf·cm, 71 in·lbf}

2. CONNECT SLIDING ROOF DRAIN HOSE

(a) for Clamp Type: (1) Connect the sliding roof drain hose. HINT: Slide the hose to the base of the drain pipe. (2) Engage the claw to secure the sliding roof drain hose. HINT: Make sure that the clamp is on the marking or between the marking and hose end. Use the same procedure for the other 3 sliding roof drain hoses.

*a Clamp *b Marking

(b) for Clip Type:

*a	Clip
*b	Marking
	Outside
	Front Side

(1) Expand the clip and connect the sliding roof drain hose.

HINT:

Slide the hose to the base of the drain pipe.

(2) Release the clip to secure the sliding roof drain hose.

NOTICE:

The clip must face toward the outside of the vehicle and also be above the lower surface of the sliding roof housing assembly when installing the sliding roof drain hose.

3. INSTALL SLIDING ROOF WEATHERSTRIP (for TMMC Made)

(a) Install the sliding roof weatherstrip.

*a	Joint	*b	Alignment Mark
*c	Middle Mark	*d	Correct
*e	Incorrect	*f	Pinched
*g	Exposed	*h	Gap (raised, wavy, etc.)
	Front Side	-	-

(1) Position the joint of the sliding roof weatherstrip on the rear side.

(2) Align the alignment marks on the sliding roof weatherstrip with the middle marks on the front corners of the sliding roof panel sub-assembly and install the sliding roof weatherstrip.

(3) Install the lip of the sliding roof weatherstrip securely.

4. INSTALL SLIDING ROOF GLASS SUB-ASSEMBLY

(a) Using a T25 "TORX" socket wrench, temporarily install the sliding roof glass sub-assembly with the 4 screws.

(b) Perform a level check.

(1) Check the difference in level "a" between the roof panel and the upper surface of the sliding roof weatherstrip when the sliding roof glass sub-assembly is fully closed.

HINT:

"+" represents the condition that the glass is above the panel level. "-" represents the condition that the glass is below the panel level.

Standard:

(c) Perform a gap check. (1) Check the gap between the roof panel and sliding roof glass sub-assembly. NOTICE: The gap must be even all around.

*a Even

(d) After adjusting the sliding roof glass sub-assembly, using a T25 "TORX" socket wrench, install the sliding roof glass sub-assembly with the 4 screws.

Torque:

4.0 N·m {41 kgf·cm, 35 in·lbf}

5. CHECK FOR WATER LEAK

(a) After adjusting the sliding roof glass sub-assembly, check for water leakage into the vehicle interior.

(b) If there are any leaks, readjust the sliding roof glass sub-assembly.

6. INSTALL CURTAIN SHIELD AIRBAG ASSEMBLY LH (w/o Rear No.2 Seat)

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7. INSTALL CURTAIN SHIELD AIRBAG ASSEMBLY LH (w/ Rear No.2 Seat)

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8. INSTALL CURTAIN SHIELD AIRBAG ASSEMBLY RH

HINT:

Use the same procedure as for the LH side.

9. INSTALL SLIDING ROOF SIDE GARNISH LH

(a) Engage the 2 claws to install a new sliding roof side garnish LH.

10. INSTALL SLIDING ROOF SIDE GARNISH RH

HINT:

Use the same procedure as for the LH side.

11. INSTALL SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY

HINT:

Perform this procedure only when replacement of the sliding roof drive gear sub-assembly is necessary.

(a) Apply MP grease to the gear of the sliding roof drive gear sub-assembly.

(b) Install the sliding roof drive gear sub-assembly with the 2 bolts.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

(c) Connect the connector.

(d) Engage the 2 guides as shown in the illustration.

Install in this Direction

(e) Install the map light bracket with the bolt.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

(f) Install the map light assembly.

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12. INITIALIZE SLIDING ROOF SYSTEM

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13. CHECK SLIDING ROOF SYSTEM

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