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Audi Q7 (4M) 2016-2022 Owner's Manual: Driving with a trailer

General information

Your vehicle is primarily intended for transporting people and luggage. However, if you drive with a trailer, follow the technical requirements, the operation and driving tips, and the legal regulations.

Driving with a trailer affects the vehicle's energy usage, performance, and wear. It also requires greater concentration from the driver.

A retrofitted trailer hitch must be installed according to the instructions provided by the manufacturer.

WARNING

Do not transport any people in a trailer due to the risk of fatal injury.

Operating instructions

Towing capacity

The permitted towing capacity must not be exceeded under any circumstances.

You can drive up larger inclines if you are not using the maximum towing capacity.

The specified towing weights only apply at elevations up to 3,200 feet (1,000 m) above sea level.

As the elevation increases, the engine power decreases due to the decreasing air pressure. This reduces the hill climbing ability and towing capacity.

For every additional 3,200 feet (1,000 m), the maximum gross combined weight rating must be reduced by approximately 10%. The actual combined weight is the combined weight of the (loaded) vehicle and the (loaded) trailer.

Tongue weight

The maximum permitted tongue weight of the trailer drawbar on the trailer hitch ball head must not be exceeded.

For driving safety, Audi recommends always using the maximum permitted tongue weight, but do not exceed this weight. Having the tongue weight too low affects the handling of the vehicle and trailer.

You can determine the tongue weight using a tongue weight scale, a bathroom scale, or a public weigh station, for example. If the tongue weight differs, it can be adjusted by distributing the load in the trailer correctly. If the tongue weight meets the specifications, then the load in the trailer should not be changed.

Load distribution

Poor cargo load and distribution can negatively impact vehicle handling. Load the vehicle and trailer based on the following criteria as much as possible:

Speed

Adhere to the legal speed limits. Follow the legal regulations that are applicable in the country where you are operating the vehicle.

As the speed increases, the driving stability of the vehicle and trailer decreases. Therefore you should not exceed the maximum legal speed limit when there are unfavorable road, weather, and/or wind conditions. This especially applies when driving downhill.

Hill

When you start driving uphill or downhill, the vehicle and trailer may tilt or sway sooner than when driving on a level surface. If small swaying movements have already occurred, you can stabilize the trailer by firmly braking immediately.

Never attempt to "straighten out" the vehicle and trailer by accelerating.

Downshift before driving on hills to utilize the engine braking effect .

Exterior lighting

Follow the legal regulations for lighting on your trailer that are applicable in the country where you are operating the vehicle. If necessary, contact an authorized Audi dealer or authorized Audi Service Facility for more information.

Before you start driving, check all lighting equipment on the trailer while it is hitched to the vehicle.

The headlight range control automatically adjusts the light range of the headlights.

The turn signals are activated in trailer mode if the indicator light blinks. If a turn signal on the trailer or on the vehicle fails while in trailer mode, the indicator light will not blink twice as fast to indicate this.

Outside mirrors

Make sure that you can also observe the traffic area behind the vehicle using the exterior mirrors, and use additional exterior mirrors if necessary.

Adjust the additional exterior mirrors so that you have a sufficient visibility behind the vehicle.

Follow the local legal regulations for installing additional exterior mirrors.

Engine cooling system

Driving with a trailer means a higher load on the engine and the cooling system. Make sure the cooling system contains enough coolant.

Engine coolant temperature

Pay attention specifically to the coolant temperature display when there are high outside temperatures, and when driving on Long inclines. Shift to a higher gear in a timely manner.

Tires

Set the tire pressure on your vehicle for a "full load"; see the tire pressure sticker. If necessary, also adjust the tire pressure on the trailer according to the manufacturer's specifications.

The trailer and the vehicle should be equipped with winter tires when driving in winter temperatures.

Driver assistance systems

Connecting or disconnecting a trailer/rear carrier system can change the alignment of the sensors/ cameras.

To ensure the driver assistance systems can function correctly, switch the ignition off and then back on again each time an object is connected to the trailer hitch or disconnected from it.

Overrun brakes

If your trailer is equipped with an overrun brake, it must be correctly adjusted and function correctly.

When using a trailer with overrun brakes, first brake gently then quickly. This reduces the risk of jerking while braking if the trailer wheels lock up.

WARNING

Constant braking causes the brakes to overheat and can substantially reduce braking performance, increase braking distance, or cause complete failure of the brake system.

Note

Attachments retrofitted on the vehicle may cause damage, especially on the trailer hitch ball head. In cases of damage, have the function checked by an authorized Audi dealer or authorized Audi Service Facility.

Tips

Air suspension

Applies to: vehicles with air suspension

Requirement: all vehicle doors must be closed.

The Audi drive select comfort mode is selected before you connect the trailer .

Setting trailer mode

For vehicles with a factory-installed trailer hitch, the air suspension trailer mode will automatically switch on if you connect the trailer connector to the socket.

When using rear carrier systems that are mounted directly on the trailer hitch ball head, you can also switch trailer mode off manually.

If you have to drive through difficult road conditions, you can raise the vehicle again after hitching the trailer or after ensuring the tongue weight is correct. To do this, select the Audi drive select offroad or allroad mode, or select Raise to create the maximum ground clearance.

Note

Tips

Even when lowering manually, the vehicle level will not lower more than the amount specified in the Audi drive select comfort mode.

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