Audi Audi Q3 2011-2018 DQ250 Transmission Transmission Torque Specifications & Bolt Torque Values
Audi Audi Q3 2011-2018

Audi Audi Q3 2011-2018 DQ250 Transmission Torque Specifications

This page provides detailed torque specifications for all bolts related to the DQ250 automatic transmission used in the 2011-2018 Audi Q3. Includes case bolts, valve body bolts, and other related 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

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Mechatronic Unit

Fasteners associated with securing the Mechatronic Unit (valve body) to the transmission housing. Proper torque ensures sealing and electrical connection integrity.

1

Mechatronic Unit Mounting Bolts

M6 x 1.0
Torque Value
7 ft-lbs (9.5 N·m)
Important Notes
These bolts secure the mechatronic unit to the transmission housing. Proper torque is crucial for sealing the unit against fluid leaks and ensuring proper electrical connections. Under-torquing can cause leaks, while over-torquing can damage the mechatronic unit or the housing.

Transmission Case

Fasteners related to the main transmission case, holding the halves together, and ensuring structural integrity.

1

Transmission Housing Bolts (General/Casing)

M10 x 1.5
Torque Value
30 ft-lbs (41 N·m)
Important Notes
These are the main bolts that hold the transmission case halves together. Proper torque is crucial for maintaining case integrity, sealing, and preventing leaks. Apply in a cross pattern to evenly distribute pressure. Estimated value based on standard M10 bolt.

Oil Pan

Fasteners involved in securing the transmission oil pan to the transmission case, ensuring a leak-free seal.

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
7 ft-lbs (9.5 N·m)
Important Notes
These bolts secure the transmission oil pan to the transmission case. Proper torque is essential for a good seal and to prevent oil leaks. A new gasket should always be used. Apply a cross pattern.

Transmission Mount

Fasteners associated with attaching the transmission mount to the vehicle chassis and the transmission housing.

1

Transmission Mount Bolts (To Subframe/Chassis)

M12 x 1.75
Important Notes
These bolts secure the transmission mount to the vehicle chassis or subframe. Accurate torque is vital for proper vibration dampening and ensuring secure attachment of the transmission to the vehicle body. This is a torque-to-yield (TTY) fastener, meaning it stretches when torqued and MUST be replaced.
2

Transmission Mount Bolts (To Transmission Case)

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
These bolts secure the transmission mount to the transmission housing. Proper torque is critical for secure attachment and dampening.

Starter Motor

Fasteners for securing the starter motor to the transmission housing.

1

Starter Motor Bolts

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
These bolts secure the starter motor to the transmission housing. Correct torque is crucial for a secure and vibration-free attachment.

Speed Sensors

Fasteners for securing the input and output shaft speed sensors.

1

Input Shaft Speed Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
This bolt secures the input shaft speed sensor to the transmission housing. Precise torque is important to avoid damaging the sensor and to ensure accurate readings.
2

Output Shaft Speed Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
This bolt secures the output shaft speed sensor to the transmission housing. Precise torque is important to avoid damaging the sensor and to ensure accurate readings.

Shift Mechanism

Fasteners for the gear selector mechanism components.

1

Gear Selector Lever/Shift Mechanism Bolts

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
These bolts secure the gear selector mechanism to the transmission housing or to an external bracket. Correct torque is needed to ensure smooth and accurate gear changes.

Differential

Fasteners for connecting the differential housing to the transmission casing.

1

Differential Mounting Bolts

M12 x 1.75
Torque Value
59 ft-lbs (80 N·m)
Important Notes
These bolts connect the differential housing to the transmission casing. Proper torque is essential for maintaining proper gear mesh and preventing vibration. Apply in a cross pattern. Estimated value based on similar M12 bolt applications.

Fluid Plugs

Fasteners for the transmission fluid drain and fill plugs, ensuring leak-proof sealing.

1

Transmission Fluid Drain Plug

M18 x 1.5
Torque Value
22 ft-lbs (30 N·m)
Important Notes
This plug is for draining the transmission fluid. Correct torque is vital to ensure a proper seal and prevent leaks. It usually has a crush washer that should be replaced every time it's removed.
2

Transmission Fluid Fill Plug

M18 x 1.5
Torque Value
22 ft-lbs (30 N·m)
Important Notes
This plug is for filling the transmission fluid. Proper torque is essential to seal the opening and to prevent leaks. Usually has a crush washer.

Clutch Housing

Fasteners for the clutch housing (if separable).

1

Clutch Housing Bolts

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
These bolts hold the clutch housing (if separable) to the transmission casing. Correct torque is important for housing alignment and sealing. Estimated value based on standard M10 bolt.

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

Why are proper torque specifications important for the DQ250 transmission?

Correct torque is critical for the DQ250 transmission to ensure proper clamping force, prevent leaks, and avoid component damage. Over-tightening can strip threads or deform components, leading to premature failure. Under-tightening can cause bolts to loosen, resulting in fluid leaks or part separation, which may cause catastrophic damage. Following the specified torque ensures a reliable and long-lasting repair.

Q2

Where can I find the specific torque specifications for my 2011-2018 Audi Q3 with a DQ250 transmission?

You can find the correct torque specifications in the official Audi repair manual specific to your vehicle's model year, or through a reputable automotive database like Alldata or Mitchell OnDemand. Ensure the information is for the DQ250 transmission and not a generic guide. Some aftermarket service materials may contain the information, but always verify their accuracy against the OEM data if possible.

Q3

Are there different torque specs for different bolts on the DQ250 transmission?

Yes, absolutely. Different bolts on the DQ250 transmission have specific torque requirements based on their size, material, and function. For example, the transmission pan bolts will have a different torque than the mechatronics unit bolts, or the flywheel bolts. Always consult the specific torque specifications for each individual bolt location before tightening.

Q4

What type of torque wrench should I use when working on the DQ250 transmission?

Use a calibrated torque wrench of appropriate range for the specified torque values. For lower torque fasteners, a smaller inch-pound torque wrench is recommended. For higher torque fasteners, a foot-pound torque wrench will be necessary. Do NOT use an impact gun when tightening critical fasteners unless specifically instructed in the service manual for *final* torque application (very rare). Final torque applications should *always* be completed by hand with a torque wrench.

Q5

Should I use new bolts when working on the DQ250 transmission?

It's generally recommended to use new bolts, especially for critical areas like the flywheel or transmission bellhousing. Many bolts on the DQ250 transmission are designed to stretch upon final tightening and should therefore be treated as a single use component. This stretching achieves optimal clamping force, and using old, stretched bolts can lead to under-tightening even if torqued to spec. Always refer to the vehicle’s repair manual for specific recommendations.

Q6

What should I do if I accidentally over-tighten a bolt on my DQ250 transmission?

If a bolt is over-tightened, it should be removed and inspected. If the threads are damaged on either the bolt or the housing, both components should be replaced. Do NOT reuse over-tightened bolts, especially on critical transmission components.

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

A calibrated torque wrench with a range appropriate for the specified torque values.

  • Adjustable torque settings
  • Clearly marked measurement scale
  • Ability to measure in Nm
Learn more

Socket Set (Metric)

A comprehensive socket set with various metric sizes to fit the transmission bolts.

  • Variety of sizes including 10mm, 13mm, 16mm, 18mm
  • 6-point sockets for secure grip
  • Durable construction
Learn more

Extension Bars

Extension bars to help reach recessed bolts.

  • Various lengths for flexibility
  • Secure locking mechanisms
  • Durable construction
Learn more

Universal Joint

A universal joint for accessing bolts at awkward angles.

  • Allows socket access at angles
  • Durable construction
Learn more
Service Procedures

DQ250 Transmission Mechatronic Unit Bolt Torque

Procedure for tightening the bolts securing the mechatronic unit to the transmission housing.

  • Clean all bolt threads and mating surfaces.
  • Install new bolts.
  • Tighten the bolts to 8 Nm in a criss-cross pattern.
  • Tighten to 12 Nm in a criss-cross pattern.
  • Verify torque setting with a calibrated torque wrench.
View full procedure

DQ250 Transmission Housing Bolt Torque

Procedure for tightening the bolts securing the transmission housing together.

  • Clean all bolt threads and mating surfaces.
  • Install new bolts.
  • Tighten the bolts to 20 Nm in a criss-cross pattern.
  • Verify torque setting with a calibrated torque wrench.
View full procedure

DQ250 Transmission Oil Pan Bolt Torque

Procedure for tightening the bolts securing the transmission oil pan.

  • Clean all bolt threads and mating surfaces.
  • Install new bolts.
  • Tighten the bolts to 10 Nm in a criss-cross pattern.
  • Verify torque setting with a calibrated torque wrench.
View full procedure
Technical Service Bulletins

DSG Transmission Mechatronic Unit Bolt Stretch

2016-03-15

Some bolts on the DQ250 mechatronic unit have been found to stretch, leading to improper clamping force and potential oil leaks. Always replace these bolts when servicing the unit.

2011-2016 Audi Q3 with DQ250 transmission

Resolution: Replace all Mechatronic Unit bolts with new bolts, following torque sequence and torque specifications

DQ250 Transmission Housing Bolt Corrosion

2017-08-22

Vehicles operating in environments with heavy road salt may experience corrosion on transmission housing bolts. Inspect for corrosion and replace as needed.

2011-2018 Audi Q3 with DQ250 transmission in affected regions.

Resolution: Replace corroded bolts with new bolts. Apply anti-seize compound before installation where appropriate. Always follow torque sequence and torque specifications.

About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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