Acura TLX 2021-present HVAC System Bolt Torque Specifications
Complete factory torque specifications for all hvac 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
Hvac Compressor Components
Torque specifications for the HVAC compressor and related mounting hardware.
1 Compressor Mounting Bolts (Upper)
M8 x 1.25
Compressor Mounting Bolts (Upper)
M8 x 1.25Torque Value
Important Notes
2 Compressor Mounting Bolts (Lower)
M8 x 1.25
Compressor Mounting Bolts (Lower)
M8 x 1.25Torque Value
Important Notes
3 Compressor Clutch Bolt
M10 x 1.25
Compressor Clutch Bolt
M10 x 1.25Torque Value
Important Notes
Hvac Condenser Components
Torque specifications for the HVAC condenser and related mounting hardware.
1 Condenser Mounting Bolts
M6 x 1.0
Condenser Mounting Bolts
M6 x 1.0Torque Value
Important Notes
2 Condenser Line Connection Fittings (Refrigerant)
Varies (Typically M10 x 1.25)
Condenser Line Connection Fittings (Refrigerant)
Varies (Typically M10 x 1.25)Torque Value
Important Notes
Hvac Evaporator Components
Torque specifications for the HVAC evaporator core and related components.
1 Evaporator Core Mounting Bolts
M6 x 1.0
Evaporator Core Mounting Bolts
M6 x 1.0Torque Value
Important Notes
2 Evaporator Line Connection Fittings (Refrigerant)
Varies (Typically M10 x 1.25)
Evaporator Line Connection Fittings (Refrigerant)
Varies (Typically M10 x 1.25)Torque Value
Important Notes
Hvac Blower Motor Components
Torque specifications for the HVAC blower motor and related mounting hardware.
1 Blower Motor Mounting Screws
M5 x 0.8
Blower Motor Mounting Screws
M5 x 0.8Torque Value
Important Notes
2 Blower Motor Resistor Pack Screws
M5 x 0.8
Blower Motor Resistor Pack Screws
M5 x 0.8Torque Value
Important Notes
Hvac Actuator Components
Torque specifications for the HVAC mode, blend, and recirculate door actuators.
1 Actuator Mounting Screws
M4 x 0.7
Actuator Mounting Screws
M4 x 0.7Torque 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 How many climate control zones does the 2021-Present Acura TLX have?
How many climate control zones does the 2021-Present Acura TLX have?
The Acura TLX 2021-Present models feature a dual-zone automatic climate control system, allowing independent temperature settings for the driver and front passenger.
Q2 Does the Acura TLX have rear vents?
Does the Acura TLX have rear vents?
Yes, the Acura TLX includes rear air vents to provide climate control for passengers in the back seats.
Q3 Is there an air filtration system in the TLX?
Is there an air filtration system in the TLX?
Yes, the Acura TLX is equipped with an air filtration system designed to reduce pollen, dust, and other airborne particles, helping to maintain cabin air quality.
Q4 Can I control the climate control system via remote?
Can I control the climate control system via remote?
While the vehicle does not typically have remote climate activation as a standard feature, some models might support preconditioning via the AcuraLink app or a compatible remote start function depending on trim and package. Consult your specific vehicle documentation or dealer for confirmation.
Q5 Does the TLX have heated and ventilated front seats?
Does the TLX have heated and ventilated front seats?
Yes, most trims of the 2021-Present Acura TLX offer heated front seats, and higher trims usually include ventilated front seats for enhanced comfort.
Q6 How do I adjust the fan speed in the TLX?
How do I adjust the fan speed in the TLX?
The fan speed can be adjusted using the physical buttons and/or the touchscreen interface on the center console. Press the fan speed up/down buttons or select a level through the touchscreen settings to control the airflow.
Q7 What is the 'Auto' mode on the climate control panel?
What is the 'Auto' mode on the climate control panel?
The 'Auto' mode automatically regulates the fan speed, temperature, and air distribution to maintain the set temperature, providing convenient and consistent cabin climate.
Q8 Does the TLX have a humidity sensor?
Does the TLX have a humidity sensor?
While not a commonly specified feature, some models may have a humidity sensor that can help optimize the automatic climate control performance. Refer to your specific vehicle documentation or dealer for detailed specifications.
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
Digital Manifold Gauge Set
Used to measure refrigerant pressures in the AC system. Displays both high and low side pressure readings, along with temperature.
- Digital display
- Refrigerant compatibility (R-134a and R-1234yf)
- Temperature readings
- Pressure readings
Vacuum Pump
Used to evacuate the AC system of air and moisture before charging with refrigerant. Essential for proper AC system operation.
- Dual-stage pump
- High CFM rating
- Oil mist filter
- Built-in vacuum gauge
Refrigerant Recovery Machine
Used to safely recover refrigerant from the AC system for recycling or disposal. Compliant with EPA regulations.
- Automatic recovery and shutoff
- Multiple refrigerant compatibility
- Built-in scales
Torque Wrench (3/8" Drive, 5-30 ft-lbs)
Used to tighten AC system components to specified torque settings, crucial for preventing leaks and ensuring proper operation.
- Click-type mechanism
- Accurate torque readings
- Adjustable torque settings
Torque Wrench (1/4" Drive, Inch-Pound)
Used to tighten small AC system fasteners to specified inch-pound torque settings, crucial for preventing damage and ensuring proper operation.
- Click-type mechanism
- Accurate torque readings
- Adjustable torque settings
AC Line Disconnect Tool Set
Specialized tools for safely disconnecting AC lines without damaging the quick-connect fittings.
- Various sizes for different AC lines
- Durable construction
Leak Detector (Electronic)
Used to pinpoint refrigerant leaks in the AC system. Offers greater precision than visual inspection or soap solutions.
- Audible and visual leak indicators
- High sensitivity
- Refrigerant-specific detection
Infrared Thermometer
Used to measure surface temperatures of AC components, such as the evaporator and condenser, to diagnose performance issues.
- Non-contact temperature measurement
- Wide temperature range
- Laser pointer for accuracy
Service Procedures
AC System Evacuation and Recharge
Procedure for properly evacuating the AC system and recharging with the correct amount of refrigerant.
- Step 1: Connect the recovery machine and recover any remaining refrigerant from the system.
- Step 2: Connect the vacuum pump to the AC system.
- Step 3: Evacuate the system for the specified time to remove air and moisture.
- Step 4: Close the manifold gauge valves and observe the vacuum for leaks.
- Step 5: Connect the refrigerant charging cylinder to the manifold gauge.
- Step 6: Charge the system with the correct amount of refrigerant (refer to vehicle specifications).
- Step 7: Perform a performance check of the AC system.
AC System Leak Test
Procedure for using an electronic leak detector to find leaks in the AC system.
- Step 1: Visually inspect all AC lines, connections, and components for obvious signs of leaks (oil residue).
- Step 2: Ensure the system is pressurized.
- Step 3: Turn on the electronic leak detector and allow it to warm up.
- Step 4: Slowly move the sensor tip of the leak detector along all AC lines, fittings, and component seals.
- Step 5: Mark any areas where leaks are detected.
- Step 6: Repair the leak per the manufacturer's specifications and retest.
Compressor Replacement
Procedure for replacing the AC compressor in an Acura TLX.
- Step 1: Recover the refrigerant from the AC system using the proper recovery machine.
- Step 2: Disconnect the battery.
- Step 3: Remove the drive belt.
- Step 4: Disconnect the AC lines from the compressor using the proper disconnect tools.
- Step 5: Disconnect the electrical connector from the compressor.
- Step 6: Remove the compressor mounting bolts and carefully remove the old compressor.
- Step 7: Install the new compressor using new O-rings.
- Step 8: Reconnect the AC lines to the new compressor and the electrical connector. Torque to specification.
- Step 9: Reinstall the drive belt.
- Step 10: Evacuate and recharge the system as described in 'AC System Evacuation and Recharge' procedure.
Cabin Air Filter Replacement
Procedure for replacing the cabin air filter in an Acura TLX.
- Step 1: Locate the cabin air filter housing, typically behind the glove box.
- Step 2: Open the glove box and remove it, according to the vehicle's repair manual.
- Step 3: Remove the access cover or panel to expose the cabin air filter.
- Step 4: Carefully slide out the old filter, noting its orientation.
- Step 5: Install the new filter with the correct orientation, ensuring it fits snugly.
- Step 6: Reinstall the access panel and the glove box.
Technical Service Bulletins
TSB 21-011: AC Compressor Clutch Failure
2021-07-15Some 2021-Present Acura TLX vehicles may experience premature failure of the AC compressor clutch due to a manufacturing defect. This can result in the AC system not cooling properly.
Resolution: Replace the AC compressor with an updated part number. Follow proper evacuation and recharge procedures.
TSB 22-005: Intermittent AC System Operation
2022-03-22Some 2021-Present Acura TLX vehicles may exhibit intermittent AC system operation, such as the AC cutting out during operation or failing to blow cold air at times. This may be due to a faulty pressure sensor.
Resolution: Inspect and replace the AC pressure sensor. Check the AC system charge and correct as necessary. Clear any related DTCs.
TSB 23-001: Moldy Odor from HVAC System
2023-01-10Some 2021-Present Acura TLX vehicles may develop a moldy odor from the HVAC system, particularly in humid climates. This may be due to condensation buildup and bacteria growth in the evaporator core.
Resolution: Inspect and clean the evaporator core using an approved HVAC system cleaner. Recommend using the AC system on high with the windows open after cleaning. Replace the cabin filter with a new filter if odor persists. Advise customer to run the HVAC in fresh air mode after use.
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
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.