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Audi SQ7 TDI quattro common faults.

2019–2024, SUV, diesel, 435 HP.

The fault list covers: CZAC engine, AL952 transmission.

What you save stays on this device only. My saves

4 fault write-ups. 3 important. 13 recalls.

If you know the year, pick it. Faults for other years drop out of the list.

Before you buy

Known faults

3 important faults

expensive3

The four groups of parts in the air suspension (compressor, valve block, ride height sensors, air springs) work together, and any weak link causes a fault message, an uneven ride height or a car that settles. The characteristic symptom: the car sits down on one corner overnight, levels itself for minutes in the morning, and the compressor runs long and loud. According to the reports the compressor lasts 80,000 to 100,000 km; and a leaking air spring takes the compressor with it, because it keeps trying to make up the loss.

What to check

  • Look at the car cold, after standing a long time: has it settled on any corner
  • After startup time how long it takes to level, and listen to the compressor
  • Cycle through the ride height settings in the onboard menu and check that all of them work
3 more steps in the write-up

The internal springs of the flywheel tire, and the two discs knock against each other. The signs are a rattling or knocking from the bellhousing at idle and when releasing the clutch pedal, and vibration through the floor. If the clutch slips without a burnt smell, that also points to the flywheel. It is worth replacing in time: a disintegrated flywheel can destroy the bellhousing too. At a clutch replacement the two go together anyway.

What to check

  • At idle, without touching the clutch pedal, listen for the rattle from the bellhousing, then press the pedal: if it stops, that is suspect
  • Watch for the characteristic clatter on starting and switching off
  • Put your foot on the floor at idle: a noticeable vibration indicates tired springs
2 more steps in the write-up

The vanes of the variable geometry turbo are glued together by soot and oil arriving through the EGR. First you get overboost or a lack of boost, then loss of power above 2,000 rpm, and finally limp mode. Caught in time it is enough to remove the turbo, clean it and fit a new actuator rod. Short urban trips and gentle, low rev driving speed up the deposits.

What to check

  • On the motorway, load it above 2,000 rpm: does it pull evenly, or does the power break up
  • Watch whether the warning light flashes up under acceleration (overboost protection)
  • Ask what kind of journeys it did: a daily short urban run is the worst
1 more steps in the write-up

comfort1

The G62 sensor tells the engine control unit how hot the coolant is. If it is faulty, the control unit thinks a warm engine is cold, and runs it rich: hard warm or cold starting, a rough idle, markedly increased fuel consumption, and a dash temperature gauge that jumps around or never reaches its usual reading. The part is cheap and can be replaced in half an hour: the trouble is that many people do not recognise it and replace an injector or a lambda sensor instead. If the fault persists, the rich mixture can destroy the catalytic converter too.

What to check

  • Warm it up and watch the dash temperature gauge: the needle should sit steadily at the middle reading, not jump around
  • Watch a cold start, then a warm start after twenty minutes standing
  • With a code reader look for the 17664 / P1256 code in the engine control unit
2 more steps in the write-up

Checklist

Audi SQ7 TDI quattro

First what you would check on any car. Then the faults of this model.

Before you buy

Checklist

The printed sheet starts with what you would check on any car. What you tick stays on this device only.

On every car

Ask the owner

vinkodex.com · Before you buy it, see what can go wrong.

Official recall13 recallsShow

The manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done.

Most recent: 23 April 2021

A12/01220/21Safety recallEnvironment23 April 2021 · EU Safety Gate

The vehicles are equipped with control software regarded as unauthorised by the competent authorities. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Importer Category of measure(s): Recall of the product from end users Date of entry into force: 23/04/2021

The authority's notice

20V658000STRUCTURE:BODY:ROOF AND PILLARSSTRUCTURE:BODY:ROOF AND PILLARS27 October 2020 · NHTSA (USA)

Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2020 Audi Q7 vehicles. The padding on the vehicle's C-pillar may not absorb enough impact in the event of a crash.

Risk: In the event of a crash, an unbelted occupant's head may impact the vehicle's C-pillar padding, increasing the risk of injury.

Remedy: Audi will notify owners, and dealers will replace the deformation element on the C-pillars, free of charge. The recall began November 17, 2020. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 70H8.

The authority's notice

20V149000STEERINGSTEERING16 March 2020 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2019 Audi Q8 and 2017-2019 Audi Q7 vehicles. The bolt connecting the steering shaft to the steering gear may loosen, possibly resulting in a loss of steering control.

Risk: A sudden loss of loss of steering control may increase the risk of a crash.

Remedy: Volkswagen will notify owners, and Audi dealers will inspect and, if necessary, replace the steering shaft bolt, as necessary, free of charge. The recall began March 31, 2020. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 36A1.

The authority's notice

20V093000AIR BAGS:SIDE/WINDOWAIR BAGS:SIDE/WINDOW19 February 2020 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2019 Audi Q7 vehicles. In the event of a crash, the side curtain air bags may not properly inflate.

Risk: An air bag that does not properly inflate in the event of a crash can increase the risk of injury.

Remedy: Volkswagen will notify owners, and dealers will replace the side curtain air bags, free of charge. The recall began March 19, 2020. Owners may contact Volkswagen customer service at 1-800-893-5298. Volkswagen's number for this recall is 69AJ.

The authority's notice

19V114000SUSPENSION:FRONT:SHOCK ABSORBERSUSPENSION:FRONT:SHOCK ABSORBER20 February 2019 · NHTSA (USA)

Volkswagen Group of America, Inc. (Audi) is recalling certain 2019 Q7, Q8, S5 Cabriolet, and S5 Sportback vehicles. The front shock absorber forks may develop cracks allowing the shock absorbers to loosen.

Risk: Loose shock absorbers may impair vehicle steering, increasing the risk of crash.

Remedy: Audi has notified owners, and dealers will replace the shock absorber forks, free of charge. The recall began March 18, 2019. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 40O4.

The authority's notice

A12/00070/19Safety recallFireno date · EU Safety Gate

Due to the incompatibility of the control software with the heating film used for the front camera on the windscreen, significant overheating may occur when the heating element is controlled after the ignition is switched on or at low temperatures. This may lead to a smouldering and increase the risk of the vehicle catching fire.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/00465/20Safety recallInjuriesno date · EU Safety Gate

Possible defect in the locking mechanism on the front head restraints may cause them to unintentionally shift in height when placed under pressure. This could impair the protective effect of head restraints in the event of an accident, increasing the risk of injuries.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/00504/22Safety recallInjuriesno date · EU Safety Gate

Alteration of the rear axle’s toe and/or camber values lead to increased and uneven wear on the rear tyres, and if worn down to its carcass may suffer a sudden loss of pressure. This can lead to loss of traction and may affect vehicle handling, increasing the risk of an accident. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/00547/20Safety recallInjuriesno date · EU Safety Gate

The screw connection between the steering shaft and the steering box may not have been tightened sufficiently and may loosen over time. This will impair the vehicle’s steerability, increasing the risk of an accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/00624/20Safety recallInjuriesno date · EU Safety Gate

The joint on the discharge nozzle of the gas generator for the curtain airbag might have been inappropriately welded. In the event of an accident triggering the curtain air bag, the joint could fail impairing the proper inflation of the airbag, increasing the risk of injuries.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/00997/20Safety recallInjuriesno date · EU Safety Gate

An oil line in the automatic gearbox may have a manufacturing defect. Consequently, oil may leak out onto the road, posing a risk to the following traffic.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

INFO/00138/21Safety recallInjuriesno date · EU Safety Gate

The nuts on the eccentric bolt of the rear-axle spring-link control arm may break due to stress corrosion. As a result, the rear axle could move in the wrong direction, in an uncontrollable manner at high speeds.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

SR/03859/25Safety recallFireno date · EU Safety Gate

The cell modules of the high-voltage battery could overheat during charging which can lead to a fire. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

Engine and transmission

CZAC

320 kW (435 HP) · diesel

AL952 · 8-speed automatic (high-torque, longitudinal)

automatic · 8 speed

Torque limit950 Nm
MakerZF

We built the code from the model and the gear count. The factory sheet does not state it.

Variant data

What is in this version

Factory data

Trim
quattro
Body
SUV
Fuel
diesel
Transmission
automatic
Engine size
3956 cc
Power
320 kW (435 HP)
Drive
AWD
Production
2019–2024

Factory service interval

The manufacturer specifies this for this version. Of the mileage and the time, the one that comes first is the one that counts.

  • Air filter

    • 60,000 km or 4 years
  • Cabin (pollen) filter

    • 30,000 km or 2 years
  • Engine oil and oil filter

    • LongLife30,000 km or 2 years(valid only with LongLife-approved oil)
    • 15,000 km or 1 year
  • Brake fluid change

    • first: 3 years, then 2 years(first change at 3 years, then every two years)
  • Coolant (antifreeze) change

    • first: 193,000 km or 10 years, then 97,000 km or 5 years(G13 / G12++: first change at 120,000 miles or 10 years, then every 60,000 miles or 5 years)
  • Fuel filter, diesel

    • 60,000 km or 2 years

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms