Acura TLX 2021-present Drivetrain Bolt Torque Specifications
Complete factory torque specifications for all drivetrain components of the 2021-Present Acura TLX, including detailed procedures and specifications.
Important Information
Safety guidelines and reference information for proper torque application
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
Quick Reference Guide
Common Torque Patterns
Star Pattern
Used for wheels and other circular bolt patterns
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
Common Mistakes to Avoid
Over-tightening
Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.
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.
Follow the manufacturer's specified torque sequence pattern.
Dirty Threads
Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.
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.
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.
Check if specs are for dry or lubricated threads. Use specified lubricant when required.
Recommended Tools
Recommended Tools
Torque Wrench (1/4" Drive)
Torque Wrench (3/8" Drive)
Torque Wrench (1/2" Drive)
Angle Gauge
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
Drivetrain Front Axle Components
Torque specifications for front axle and related mounting hardware
1 Front Axle Nut
M22 x 1.5
Front Axle Nut
M22 x 1.5Torque Value
Important Notes
2 Front Drive Shaft to Transmission
M10 x 1.25
Front Drive Shaft to Transmission
M10 x 1.25Torque Value
Important Notes
Drivetrain Rear Axle Components
Torque specifications for rear axle and related mounting hardware
1 Rear Axle Nut
M20 x 1.5
Rear Axle Nut
M20 x 1.5Torque Value
Important Notes
2 Rear Drive Shaft to Differential
M10 x 1.25
Rear Drive Shaft to Differential
M10 x 1.25Torque Value
Important Notes
Drivetrain Differential Components
Torque specifications for differential mounting and related hardware
1 Rear Differential Mount Bolts
M12 x 1.25
Rear Differential Mount Bolts
M12 x 1.25Torque Value
Important Notes
2 Rear Differential Drain Plug
M18 x 1.5
Rear Differential Drain Plug
M18 x 1.5Torque Value
Important Notes
3 Rear Differential Fill Plug
M18 x 1.5
Rear Differential Fill Plug
M18 x 1.5Torque Value
Important Notes
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
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
Diagnostic Steps
Visual inspection, torque verification, thread assessment
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
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
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
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 engine options are available for the 2021-Present Acura TLX?
What engine options are available for the 2021-Present Acura TLX?
The 2021-Present Acura TLX typically offers two engine options: a 2.0-liter turbocharged inline-4 and a 3.0-liter turbocharged V6. Specific availability may vary by trim level and model year.
Q2 Is the Acura TLX available with all-wheel drive?
Is the Acura TLX available with all-wheel drive?
Yes, Acura's Super Handling All-Wheel Drive (SH-AWD) system is available on many trim levels of the 2021-Present Acura TLX, including standard on the Type S model, and on some trims is optional.
Q3 What type of transmission does the Acura TLX use?
What type of transmission does the Acura TLX use?
The 2021-Present Acura TLX uses a 10-speed automatic transmission for both the 2.0-liter and 3.0-liter engine options.
Q4 What is the horsepower of the base engine?
What is the horsepower of the base engine?
The 2.0-liter turbocharged inline-4 typically produces around 272 horsepower, though this can vary slightly depending on the specific year.
Q5 What is the horsepower of the Type S's engine?
What is the horsepower of the Type S's engine?
The 3.0-liter turbocharged V6 in the Type S typically produces around 355 horsepower, though specific figures may vary.
Q6 Can I modify the engine or drivetrain of my Acura TLX?
Can I modify the engine or drivetrain of my Acura TLX?
Modifying the engine or drivetrain can void your warranty and potentially affect the safety and reliability of your vehicle. We strongly advise consulting with Acura or a certified mechanic before making any modifications.
Q7 What is the recommended fuel type for my Acura TLX?
What is the recommended fuel type for my Acura TLX?
The Acura TLX typically requires premium unleaded gasoline to achieve optimal performance. Consult your owner's manual for specific recommendations.
Q8 What is the difference between FWD and SH-AWD?
What is the difference between FWD and SH-AWD?
FWD (Front-Wheel Drive) delivers power only to the front wheels. SH-AWD (Super Handling All-Wheel Drive) actively distributes power between the front and rear wheels, and even between the rear left and right wheels for enhanced handling and traction, especially in adverse weather.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
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
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
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-lb)
Essential for accurately tightening bolts and fasteners in the drivetrain to manufacturer specifications. This range covers many common drivetrain components.
- Click-type mechanism
- 1/2 inch drive
- Accuracy +/- 3%
Torque Wrench (50-250 ft-lb)
Required for tightening larger components like axle nuts and suspension hardware connected to the drivetrain.
- Click-type mechanism
- 1/2 inch drive
- Accuracy +/- 3%
Transmission Fluid Pump
Used to extract and refill the transmission with automatic transmission fluid (ATF). Essential for proper fluid changes.
- Manual pump
- Dispensing hose with various adapters
- Calibrated container
CV Axle Puller
Specialized tool designed for the safe and efficient removal of CV axles from the transmission and wheel hub.
- Universal fit
- Slide hammer compatible
- Multiple adapters
Stubby Impact Wrench
Useful in tight spaces for loosening and tightening fasteners quickly, such as driveshaft bolts.
- Compact design
- High torque output
- Variable speed control
Digital Multimeter
Used for diagnosing electrical issues related to the drivetrain, especially for electronic all-wheel drive systems.
- Measures volts, amps, and ohms
- Continuity test function
- Auto-ranging
Scan Tool
Required for diagnosing drivetrain-related trouble codes. Capable of reading and clearing DTCs.
- Reads and clears codes
- Live data monitoring
- Module access
Service Procedures
Automatic Transmission Fluid (ATF) Change
Procedure for changing the automatic transmission fluid in the Acura TLX.
- Step 1: Locate the transmission drain plug. Position a drain pan underneath.
- Step 2: Remove the drain plug and allow the old fluid to drain completely.
- Step 3: Reinstall the drain plug with a new crush washer and torque to specification.
- Step 4: Locate the transmission fill plug and remove it.
- Step 5: Using a transmission fluid pump, add the correct amount and type of new ATF into the transmission fill hole.
- Step 6: Reinstall the fill plug with a new crush washer and torque to specification.
- Step 7: Start the engine and shift through each gear. Check the fluid level again and top up if needed.
- Step 8: Road test the vehicle to verify the new fluid is working properly.
Differential Fluid Change (if applicable)
Procedure for changing the front or rear differential fluid in applicable models (SH-AWD).
- Step 1: Locate the differential drain and fill plugs. Position a drain pan underneath.
- Step 2: Remove the drain plug and allow the old fluid to drain completely.
- Step 3: Reinstall the drain plug with a new crush washer and torque to specification.
- Step 4: Remove the fill plug.
- Step 5: Using a fluid pump, add the correct type of differential fluid into the fill hole until it reaches the proper level.
- Step 6: Reinstall the fill plug with a new crush washer and torque to specification.
CV Axle Replacement
Procedure for replacing a worn or damaged CV axle.
- Step 1: Loosen the wheel lug nuts on the affected side.
- Step 2: Raise and support the vehicle safely.
- Step 3: Remove the wheel.
- Step 4: Remove the cotter pin from the axle nut and loosen it using the correct sized socket.
- Step 5: Disconnect any suspension components as needed (e.g. ball joint, tie rod) to gain access to the CV axle.
- Step 6: Carefully use a CV axle puller to remove the axle from the hub assembly and transmission.
- Step 7: Install the new CV axle, ensuring it is fully seated.
- Step 8: Reconnect all components in reverse order, torquing fasteners to specification.
- Step 9: Install the cotter pin on the axle nut.
- Step 10: Reinstall the wheel and lower the vehicle.
- Step 11: Torque the wheel lug nuts to specification.
Technical Service Bulletins
Software Update for SH-AWD System (Potential for Rear Diff Noise)
2022-07-15Some 2021-2022 TLX models with SH-AWD may experience a whirring or groaning noise from the rear differential. This is often caused by improper calibration of the AWD system.
Resolution: Reprogram the AWD control module with the updated software available through the Honda/Acura dealer network. Perform a road test following the reflash to ensure proper operation.
Transmission Judder Issues (8-Speed DCT)
2023-03-20Some TLX models with the 8-speed dual-clutch transmission (DCT) may experience juddering or harsh shifting, particularly at low speeds. This can be attributed to clutch control software and/or degraded transmission fluid.
Resolution: Perform a software update on the transmission control module. Perform an ATF change using only Acura genuine ATF. If symptoms persist, replace clutch packs following manufacturer guidance.
Drive Shaft Bolt Loosening
2023-11-01Reports of drive shaft bolts loosening on TLX vehicles leading to driveline noise. Investigation finds possible improper torque specifications at factory.
Resolution: Inspect drive shaft bolts for proper torque. Retorque all drive shaft bolts using new bolts to the revised factory torque specification and replace if necessary.
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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.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.