Acura TLX 2021-present Suspension Bolt Torque Specifications & Fastener Values
Acura TLX 2021-present

Acura TLX 2021-present Suspension Bolt Torque Specifications

Complete factory torque specifications for all suspension components of the 2021-Present Acura TLX, including detailed procedures and specifications.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Suspension Front Strut Components

Torque specifications for the front strut assembly and related mounting hardware.

1

Strut Upper Mounting Nuts (to Body)

M10 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Tighten nuts evenly. Apply antiseize to the threads if necessary.
2

Strut Lower Mounting Bolt (to Knuckle)

M14 x 1.5
Torque Value
72 ft-lbs (98 N·m)
Important Notes
Ensure the strut is properly seated in the knuckle before tightening. Use new bolts if old are damaged.
3

Sway Bar Link Nut (to Strut)

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Hold the sway bar link with a wrench during tightening to prevent rotation.

Suspension Rear Shock Components

Torque specifications for the rear shock assembly and related mounting hardware.

1

Rear Shock Upper Mounting Bolts (to Body)

M10 x 1.25
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Tighten bolts evenly.
2

Rear Shock Lower Mounting Bolt (to Knuckle)

M14 x 1.5
Torque Value
65 ft-lbs (88 N·m)
Important Notes
Ensure the shock is properly seated before tightening. Use new bolts if old are damaged.
3

Sway Bar Link Nut (to Shock)

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Hold the sway bar link during tightening to prevent rotation.

Suspension Front Lower Control Arm

Torque specifications for the front lower control arm and related hardware.

1

Front Lower Control Arm Bolt (to Frame)

M14 x 1.5
Torque Value
72 ft-lbs (98 N·m)
Important Notes
Ensure the control arm is properly aligned before tightening. Use new bolts if old are damaged.
2

Front Lower Control Arm Ball Joint Nut (to Knuckle)

M12 x 1.25
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Use new nut and cotter pin when reassembling. Tighten to specified torque, and then advance to nearest cotter pin alignment

Suspension Rear Lower Control Arm

Torque specifications for the rear lower control arm and related hardware.

1

Rear Lower Control Arm Bolt (to Frame)

M14 x 1.5
Torque Value
72 ft-lbs (98 N·m)
Important Notes
Ensure the control arm is properly aligned before tightening. Use new bolts if old are damaged.
2

Rear Lower Control Arm Ball Joint Nut (to Knuckle)

M12 x 1.25
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Use a new nut and cotter pin when reassembling. Tighten to specified torque, and then advance to nearest cotter pin alignment

Suspension Front Knuckle Components

Torque specifications for front knuckle components.

1

Front Upper Control Arm Nut (to Knuckle)

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Hold the upper control arm ball joint with a wrench during tightening to prevent rotation.
2

Front ABS Sensor Bolt (to Knuckle)

M6 x 1.0
Torque Value
7 ft-lbs (9.8 N·m)
Important Notes
Ensure sensor is properly seated before tightening.

Suspension Rear Knuckle Components

Torque specifications for rear knuckle components.

1

Rear Upper Control Arm Nut (to Knuckle)

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Hold the upper control arm ball joint with a wrench during tightening to prevent rotation.
2

Rear ABS Sensor Bolt (to Knuckle)

M6 x 1.0
Torque Value
7 ft-lbs (9.8 N·m)
Important Notes
Ensure sensor is properly seated before tightening.

Suspension Front Sway Bar

Torque specifications for the front sway bar and related hardware.

1

Sway Bar Bracket Bolts (to Frame)

M10 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Tighten bolts evenly.

Suspension Rear Sway Bar

Torque specifications for the rear sway bar and related hardware.

1

Sway Bar Bracket Bolts (to Frame)

M10 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Tighten bolts evenly.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of suspension does the Acura TLX (2021-Present) use?

The Acura TLX (2021-Present) features a double-wishbone front suspension and a multi-link rear suspension. Some trims also offer an Adaptive Damper System.

Q2

What is the Adaptive Damper System (ADS) and how does it work?

The Adaptive Damper System (ADS) uses electronically controlled dampers to automatically adjust the suspension's stiffness based on driving conditions and selected drive mode. This provides a balance between comfort and performance.

Q3

Are there any differences in the suspension between the TLX and TLX Type S?

Yes, the TLX Type S features a sport-tuned suspension with firmer springs, dampers, and larger stabilizer bars compared to the standard TLX. The ADS is also specifically calibrated for enhanced performance.

Q4

Can I modify the suspension of my Acura TLX?

Yes, aftermarket suspension components are available. However, modifications may affect the vehicle's handling, ride quality, and warranty. It is crucial to ensure that any aftermarket parts are compatible and installed by qualified professionals.

Q5

What are some common signs that my suspension might need attention?

Common signs include excessive bouncing after going over bumps, uneven tire wear, difficulty controlling the vehicle, clunking or rattling noises from the suspension, and leaking fluid from the shocks or struts.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Torque Wrench (10-100 ft-lbs)

Essential for tightening suspension components to precise torque specifications, preventing over- or under-tightening.

  • Click-type mechanism
  • Clear torque markings
  • 1/2-inch drive
Learn more

Torque Wrench (20-250 ft-lbs)

Needed for higher torque suspension components like the spindle nut.

  • Click-type mechanism
  • Clear torque markings
  • 1/2-inch or 3/4-inch drive
Learn more

Strut Spring Compressor

Used to safely compress coil springs on the front and rear struts, required for disassembly and reassembly.

  • Heavy-duty construction
  • Safety catches
  • Adjustable arms
Learn more

Ball Joint Separator

Used to separate ball joints from steering knuckles and control arms without damaging the components.

  • Forged steel construction
  • Adjustable jaws
  • Variety of types available (pickle fork, scissor type)
Learn more

Alignment Rack and Equipment

Used for precise wheel alignment after any suspension work.

  • Computerized readings
  • Adjustable targets
  • Calibration tools
Learn more

Honda Specific Socket for Upper Control Arms

Socket used to loosen and tighten upper control arm bolts.

  • Honda Specific sizing
  • 1/2-inch drive
  • Durable Material
Learn more

Jack Stands (3-ton capacity)

Used to safely support the vehicle while working underneath it.

  • Heavy-duty construction
  • Adjustable height
  • Wide base for stability
Learn more

Floor Jack (3-ton capacity)

Used for lifting the vehicle in preparation for work on the suspension.

  • Hydraulic lift
  • Heavy-duty construction
  • Swivel casters
Learn more

Pry Bar Set

Used for levering and separating suspension components, such as control arms and stabilizer links.

  • Variety of sizes and shapes
  • Forged steel construction
  • Comfort grips
Learn more
Service Procedures

Front Strut Replacement

Procedure for replacing the front strut assembly on the Acura TLX (2021-Present). Includes coil spring removal, strut disassembly, and reassembly.

  • Step 1: Loosen the lug nuts and raise the vehicle with a jack and secure on jack stands.
  • Step 2: Remove the wheel.
  • Step 3: Disconnect the brake line and ABS sensor wire from the strut.
  • Step 4: Disconnect the sway bar end link from the strut.
  • Step 5: Support the lower control arm with a jack.
  • Step 6: Remove the two lower strut mounting bolts.
  • Step 7: Carefully remove the upper strut mounting bolts.
  • Step 8: Remove the strut assembly from the vehicle.
  • Step 9: Using a spring compressor compress the spring and disassemble the strut.
  • Step 10: Install the new strut assembly, and properly torque all fasteners.
  • Step 11: Reinstall the wheel, lower the vehicle and torque the lug nuts.
  • Step 12: Get an alignment performed after replacement.
View full procedure

Rear Shock Absorber Replacement

Procedure for replacing the rear shock absorbers on the Acura TLX (2021-Present).

  • Step 1: Loosen lug nuts, raise the vehicle using a jack, and secure with jack stands.
  • Step 2: Remove the rear wheel.
  • Step 3: Access the upper shock mount from within the trunk, remove the upper mounting nut.
  • Step 4: Remove the lower shock bolt.
  • Step 5: Remove the shock absorber from the vehicle.
  • Step 6: Install the new shock absorber and torque the fasteners correctly.
  • Step 7: Reinstall the wheel and torque lug nuts. Lower the vehicle.
View full procedure

Sway Bar Link Replacement (Front and Rear)

Procedure for replacing the sway bar links on the Acura TLX (2021-Present).

  • Step 1: Loosen the lug nuts and raise the vehicle with a jack and secure on jack stands.
  • Step 2: Remove the wheel.
  • Step 3: Locate and disconnect both ends of the sway bar link from the sway bar and suspension component.
  • Step 4: Remove the old link.
  • Step 5: Install the new sway bar link, and properly torque all fasteners.
  • Step 6: Reinstall the wheel, lower the vehicle and torque the lug nuts.
View full procedure

Control Arm Bushing Replacement

Procedure for replacing worn control arm bushings. May require specialized tools.

  • Step 1: Loosen the lug nuts and raise the vehicle with a jack and secure on jack stands.
  • Step 2: Remove the wheel.
  • Step 3: Disconnect any components that are connected to the control arm (sway bar link, etc).
  • Step 4: Support the control arm with a jack.
  • Step 5: Remove the control arm mounting bolts.
  • Step 6: Remove the control arm from the vehicle.
  • Step 7: Remove the old bushing from the control arm using a press, or other specialized tools.
  • Step 8: Install the new bushing using a press or other specialized tools.
  • Step 9: Reinstall the control arm and properly torque all fasteners.
  • Step 10: Reinstall the wheel, lower the vehicle and torque the lug nuts.
  • Step 11: Get an alignment performed after replacement.
View full procedure
Technical Service Bulletins

TSB 20-027: Front Suspension Clunk Noise Over Bumps

2020-08-21

A clunk or rattle noise may be heard from the front suspension when driving over bumps or uneven surfaces. This is caused by improper lubrication of the sway bar bushings.

2021-Present TLX

Resolution: Apply silicone lubricant to the sway bar bushings and reinstall. Check the torque of the sway bar end link nuts.

TSB 21-015: Rear Suspension Creaking Noise

2021-03-15

A creaking or squeaking noise may be heard from the rear suspension, especially during turns or weight transfer. This is caused by a rubbing between the lower shock mount and the control arm.

2021-Present TLX

Resolution: Apply a small amount of lithium grease to the contact points between the lower shock mount and control arm.

TSB 22-032: Adaptive Damper Error

2022-05-10

Error message related to adaptive damper system, sometimes with a 'hard ride' complaint. May be caused by faulty damper sensor.

2021-Present TLX w/ Adaptive Dampers

Resolution: Check sensor connections, replace faulty sensor, and recalibrate system as needed using Honda diagnostic equipment.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

Automotive Technical Specialist

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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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