Important!

This replacement procedure can be used for:
LEXUS RX (MHU3_, GSU3_, MCU3_) 400h AWD (MHU38_) … View more

The steps may slightly vary depending on the car design.

How to change front springs / front coil springs on LEXUS RX400h 2 (XU30) [TUTORIAL AUTODOC]

All the parts you need to replace – Springs for RX (MHU3_, GSU3_, MCU3_) and other LEXUS models

Alternative products

Coil spring

Replacement: coil springs – Lexus RX XU30. List of the tools you'll need:

                      Wire brush
                    
                      WD-40 spray
                    
                      Brake cleaner 
                    
                      Copper grease 
                    
                      Combination spanner #21
                    
                      Drive socket # 12 
                    
                      Drive socket # 14 
                    
                      Drive socket # 17 
                    
                      Drive socket # 19 
                    
                      Drive socket # 21 
                    
                      Wheel impact socket #21
                    
                      Ratchet wrench
                    
                      Torque wrench
                    
                      Tap wrench
                    
                      Crow bar
                    
                      Chain wrench
                    
                      Hydraulic strut spring compressor
                    
                      Hydraulic transmission jack
                    
                      Fender cover
                    
                      Wheel chock

Buy tools

Replacement: coil springs – Lexus RX XU30. AUTODOC experts recommend:

Both coil springs of the front suspension should be replaced simultaneously.
The replacement procedure is identical for the left and right coil springs of the front suspension.
All work should be done with the engine stopped.

Replacement: coil springs – Lexus RX XU30. Use the following procedure:

Step 1

Open the bonnet.
Step 2

Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
Step 3

Remove the suspension strut mount cap. Use a crowbar.
Step 4

Clean the fasteners of the shock strut upper mount. Use a wire brush. Use WD-40 spray.
Step 5

Loosen the upper fastener of the shock strut mount. Use a drive socket #14. Use a ratchet wrench.
Step 6

Secure the wheels with chocks.
Step 7

Loosen the wheel mounting bolts. Use wheel impact socket #21.
Step 8

Raise the front of the car and secure on supports.
Step 9

Unscrew the wheel bolts.

Replacement: coil springs – Lexus RX XU30. Tip:
To avoid injury, hold up the wheel when unscrewing the bolts.
Step 10

Remove the wheel.
Step 11

Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 12

Detach the fastener connecting the ABS sensor cable to the shock strut.
Step 13

Clean the fasteners of the ABS sensor and of the brake hose which connect them to the shock strut. Use a wire brush. Use WD-40 spray.
Step 14

Disconnect the brake hose holder from the shock absorber strut. Unscrew the ABS sensor fastener. Use a drive socket #12. Use a ratchet wrench.
Step 15

Unscrew the fastener connecting the stabilizer link to the shock strut. Use a drive socket #17. Use a ratchet wrench.
Step 16

Remove the stabilizer rod.
Step 17

Clean the fasteners connecting the shock strut to the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 18

Unscrew the lower fastener connecting the shock strut to the steering knuckle. Use a combination spanner #21. Use a drive socket #21. Use a tap wrench.
Step 19

Prop up the steering knuckle. Use a hydraulic transmission jack.
Step 20

Remove the fastening bolts.
Step 21

Disconnect the steering knuckle from the shock absorber strut.
Step 22

Unscrew the top fastening of the shock strut mount.

AUTODOC recommends:
Important! Hold the suspension strut while unscrewing the fastening bolts. Lexus RX XU30
Step 23

Remove the suspension strut.
Step 24

Set the shock absorber strut on the spring compressor tool.

Replacement: coil springs – Lexus RX XU30. Tip from AUTODOC experts:
Note that when using a spring compressor, spring coils need to be securely gripped, compressing the spring on the opposite sides.Ensure the correct position of the spring in the retainer.Make sure that the spring coils tightly entered the lock handles.
Step 25

Compress the spring.
Step 26

Treat the shock strut rod. Use a wire brush. Use WD-40 spray.
Step 27

Remove the strut piston rod nut. Use a chain wrench. Use a drive socket #19. Use a ratchet wrench.
Step 28

Remove the top strut mount. Use a crowbar.
Step 29

Release the coil spring.
Step 30

Remove the shock absorber dust cap and the bump stop.

AUTODOC recommends:
Replacement: coil springs – Lexus RX XU30. Carefully inspect the mount, the boot, and the bump stop of the shock absorber. Replace if necessary.
Step 31

Remove the spring.
Step 32

Install the spring on the shock absorber.
Step 33

Compress the spring.
Step 34

Install the mount, the boot and the bump stop on the shock absorber.
Step 35

Tighten the shock strut piston rod nut. Use a chain wrench. Use a drive socket #21. Use a torque wrench. Tighten it to 60 Nm torque.

Replacement: coil springs – Lexus RX XU30. Tip from AUTODOC:
Check to make sure the spring is positioned correctly. Avoid its misalignment.
Step 36

Treat the shock strut rod. Use copper grease.
Step 37

Decompress the spring.
Step 38

Remove the assembled shock strut.
Step 39

Install the shock strut into the wheel arch.
Step 40

Screw the top fastening of the shock strut mount. Do not tighten it.

AUTODOC recommends:
Lexus RX XU30 – To avoid injury, hold the suspension strut while screwing in the fastening bolts.
Step 41

Clean the mounting seats of the shock strut. Use a wire brush. Use WD-40 spray.
Step 42

Fix the shock absorber strut on the steering knuckle.
Step 43

Install the fastening bolts.
Step 44

Screw in the fastener that connects the shock strut to the steering knuckle. Use a combination spanner #21. Use a drive socket #21.
Step 45

Remove the support from under the steering knuckle.

AUTODOC recommends:
Replacement: coil springs – Lexus RX XU30. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 46

Tighten the lower fasteners connecting the shock strut to the steering knuckle. Use a drive socket #21. Use a torque wrench. Tighten it to 230 Nm torque.
Step 47

Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 48

Ιnstall the transverse stabilizer link.

Step 49

Tighten the fastener connecting the stabilizer link to the shock strut. Use a drive socket #17. Use a torque wrench. Tighten it to 74 Nm torque.
Step 50

Tighten the brake hose fastener. Screw in the ABS sensor fastener. Use a drive socket #12. Use a ratchet wrench.
Step 51

Connect the fastener of the ABS sensor cable to the shock absorber strut.
Step 52

Treat the shock strut fasteners. Use copper grease.
Step 53

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 54

Clean the brake disk surface. Use a brake cleaner.

AUTODOC recommends:
After applying the spray, wait a few minutes.
Step 55

Install the wheel.

Replacement: coil springs – Lexus RX XU30. Professionals recommend:
To avoid injury, hold up the wheel when screwing in the fastening bolts.
Step 56

Screw in the wheel bolts. Use wheel impact socket #21.
Step 57

Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #21. Use a torque wrench. Tighten it to 103 nm torque.
Step 58

Tighten the upper fastener of the shock absorber strut mount. Use a drive socket #14. Use a torque wrench. Tighten it to 55 Nm torque.
Step 59

Treat the fasteners of the shock strut mount. Use copper grease.
Step 60

Install the suspesion strut mount cap.
Step 61

Remove the fender protection cover.
Step 62

Close the hood.
Step 63

Remove the jacks and chocks.

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