Audi Audi A4 2017-present DQ200 Transmission Transmission Torque Specifications & Bolt Torque Values
Audi Audi A4 2017-present

Audi Audi A4 2017-present DQ200 Transmission Torque Specifications

Detailed torque specifications for all bolts related to the DQ200 transmission found in 2017-Present Audi A4 models. Includes transmission mounting bolts, pan bolts, and other relevant fasteners.

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

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Torque Calculator

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Dq200-transmission Mounting

Torque specifications for mounting the DQ200 transmission to the engine and/or chassis.

1

Transmission Mounting Bolts

M12 x 1.75
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. These bolts can vary in length, but this torque spec applies to all.

Dq200-transmission Case

Torque specifications for components attached to the main transmission case.

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even sealing of the oil pan gasket. Do not over-tighten.
2

Transmission Fluid Drain Plug (Plastic)

Proprietary Plastic Thread
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use new plug if any wear is noticed. Do not over-tighten as plastic threads can be easily stripped.
3

Transmission Fluid Fill Plug (Plastic)

Proprietary Plastic Thread
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use new plug if any wear is noticed. Do not over-tighten as plastic threads can be easily stripped.
4

Transmission Fluid Drain Plug (Metal)

M16 x 1.5
Torque Value
32 ft-lbs (43 N·m)
Important Notes
Use a new crush washer with the metal plug. Do not over-tighten.
5

Transmission Fluid Fill Plug (Metal)

M16 x 1.5
Torque Value
32 ft-lbs (43 N·m)
Important Notes
Use a new crush washer with the metal plug. Do not over-tighten.
6

Mechatronics Unit Mounting Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. Ensure proper seating of the unit. This is an estimated value.
7

Clutch Housing Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure.

Dq200-internal Components

Torque specifications for internal components of the DQ200 transmission.

1

Shift Fork Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Tighten evenly and do not over-torque, as the shift fork components are delicate. This is an estimated value.
2

Input Shaft Speed Sensor Bolt

M5 x 0.8
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Do not over-tighten as the plastic housing can crack. This is an estimated value.
3

Output Shaft Speed Sensor Bolt

M5 x 0.8
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Do not over-tighten as the plastic housing can crack. This is an estimated value.

Dq200-driveline

Torque specifications for driveline components connected to the DQ200 transmission.

1

Drive Axle/Half Shaft Bolts

M10 x 1.5
Torque Value
63 ft-lbs (85 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure.
2

CV Joint/Axle Nut

Varies, typically M24 x 1.5
Torque Value
155 ft-lbs (210 N·m)
Important Notes
Use a new nut if specified by the service manual. Ensure proper seating of the nut against the hub.

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 happens if I overtighten the transmission bolts?

Overtightening bolts on the DQ200 transmission can lead to several issues. It can cause damage to the threads in the transmission housing, potentially requiring expensive repairs like thread inserts or even housing replacement. Additionally, overtightening can warp the components being bolted, leading to leaks or misalignment, impacting the transmission's long-term performance. In a real-world scenario, overtorquing a bell housing bolt might crack the case, leading to transmission fluid leaks and requiring replacement. Always use a calibrated torque wrench.

Q2

Can I reuse the transmission bolts?

Generally, it is best practice to replace certain torque-to-yield (TTY) bolts, especially those used for critical components like the transmission mount or bell housing. These bolts are designed to stretch slightly during the torquing process, and reusing them can compromise their clamping force and lead to loosening or failure. For bolts that aren't TTY, careful inspection should be carried out, ensuring no damage or stretching has occurred before reuse. When in doubt, consult your vehicle's service manual or replace them. For example, transmission pan bolts are not usually torque-to-yield but should be inspected.

Q3

Why are accurate torque specifications so crucial for the DQ200?

Accurate torque specifications are paramount for the DQ200 transmission due to its relatively compact design and the precise nature of its internal components. Incorrect torque can lead to leaks, misalignment of crucial parts (like the mechatronics unit), and accelerated wear on the transmission. Additionally, inadequate torque can result in components coming loose due to vibration and stress, potentially causing catastrophic failure. For example, insufficient torque on the flywheel bolts can cause severe vibration and damage to the transmission and engine.

Q4

Should I use thread locker on the transmission bolts?

Thread locker usage depends on the specific bolt and application within the DQ200 transmission. Some bolts may be pre-coated with a thread locking compound from the manufacturer, while others may require the application of a medium strength thread locker like Loctite 243. Generally, bolts securing critical components subject to vibration benefit from thread locker. Consult your specific repair manual to confirm thread locker requirements for each bolt. An example is when bolting the mechatronic unit. Not all bolts will require this step.

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 (1/4" Drive)

A 1/4" drive torque wrench, accurate within the specified torque range for the DQ200 transmission bolts.

  • Adjustable torque settings
  • Click type for accurate torque application
  • Range to cover 10 Nm to 45 Nm
Learn more

Torque Wrench (3/8" Drive)

A 3/8" drive torque wrench, accurate within the specified torque range for the DQ200 transmission bolts.

  • Adjustable torque settings
  • Click type for accurate torque application
  • Range to cover 45 Nm to 100 Nm
Learn more

Socket Set (1/4" and 3/8" Drive)

A set of sockets in both 1/4" and 3/8" drives, including sizes needed for the DQ200 transmission bolts (e.g., 10mm, 13mm, 16mm).

  • Variety of socket sizes
  • High-quality steel construction
  • Proper fitment to avoid slippage
Learn more

Extension Bars

Various length extension bars to access recessed bolts on the transmission.

  • Durable construction
  • Multiple lengths for access
  • Secure connection to sockets
Learn more

Jointed Adapter

A jointed adapter to access hard to reach bolts, allowing for torque wrench application in awkward areas.

  • Robust hinge mechanism
  • Various sizes to suit the needed application
  • Allows offset application of the torque wrench
Learn more
Service Procedures

Mechatronic Unit Bolt Torque Procedure

Procedure for tightening the bolts securing the Mechatronic unit to the DQ200 transmission housing.

  • Locate all Mechatronic unit mounting bolts.
  • Using a 1/4" drive torque wrench and appropriate socket, begin tightening bolts to 10 Nm in a cross-tightening sequence.
  • Recheck all bolts at the 10 Nm torque setting.
  • Increase the torque on all bolts to 20 Nm, and check to ensure all are tightened at this setting.
  • Finally, increase the torque on all bolts to 25 Nm, and recheck to confirm.
  • Ensure torque values are precise and do not exceed manufacturer's specifications.
View full procedure

Transmission Housing Bolt Torque Procedure

Procedure for tightening the bolts securing the two halves of the DQ200 transmission housing.

  • Locate all bolts that secure the transmission housing together.
  • Using a 3/8" drive torque wrench and appropriate socket, begin tightening bolts to 45 Nm in a cross-tightening sequence.
  • Recheck all bolts at the 45 Nm torque setting.
  • Increase the torque on all bolts to 60 Nm and recheck to ensure all are torqued to this setting.
  • Finally, increase the torque on all bolts to 70 Nm, and recheck to confirm.
  • Ensure torque values are precise and do not exceed manufacturer's specifications.
View full procedure

Input Shaft Cover Bolt Torque Procedure

Procedure for tightening the bolts securing the input shaft cover to the DQ200 transmission housing.

  • Locate all input shaft cover mounting bolts.
  • Using a 1/4" drive torque wrench and appropriate socket, begin tightening bolts to 10 Nm in a cross-tightening sequence.
  • Recheck all bolts at the 10 Nm torque setting.
  • Increase the torque on all bolts to 20 Nm, and recheck to ensure all are tightened at this setting.
  • Ensure torque values are precise and do not exceed manufacturer's specifications.
View full procedure
Technical Service Bulletins

DQ200 Transmission Mechatronic Unit Bolt Loosening Issue

2018-05-15

Some vehicles may experience Mechatronic unit bolt loosening due to vibration. This can lead to transmission performance issues.

2017-2018 Audi A4 with DQ200 transmission

Resolution: Apply a thread locking compound to the Mechatronic unit bolts and torque to 25 Nm, ensuring a proper torque sequence is followed.

DQ200 Transmission Housing Bolt Failure

2020-11-01

Certain production batches of the DQ200 transmission exhibit premature bolt fatigue and failure. It is advised to use new OEM bolts when disassembling and reassembling.

2017-2020 Audi A4 with DQ200 transmission

Resolution: Inspect all transmission housing bolts for signs of stress or damage. Replace all bolts with new, OEM hardware, and torque to 70 Nm following proper torque sequence.

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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