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Audi A4 (B9) 2016-2022 Owner's Manual: Accessories and technical changes

Audi A4 (B9) 2016-2022 Owner's Manual / Customer information / Accessories and technical changes


Your vehicle is covered by various warranties:

You can find detailed information in your Warranty & Maintenance Booklet and in the California Emissions Booklet*.

Audi Literature Shop

Service information is made available as soon as possible after a model is introduced and can be ordered in the Audi Literature Shop: http://

Driving in other countries

Government regulations in the United States and Canada require motor vehicles to comply with emissions regulations and safety standards.

Therefore, vehicles that were produced for the U.S. and Canadian markets are different from vehicles produced for other countries.

If you plan to use your vehicle outside of the United States or Canada, it is possible that:


Audi is not liable for damage to the vehicle resulting from these country-specific differences.

Maintenance, repairs, and technical modifications

General information

Due to the increasing complexity of technology in these vehicles, as well as the safety and environmental standards that apply, you can only perform a very limited amount of repairs and modifications to the vehicle yourself.

Proof of maintenance work may be required to submit a claim within the warranty period.

We recommend that you have your vehicle serviced by an authorized Audi dealer or authorized Audi Service Facility and that Audi Genuine Parts and Audi Genuine Accessories are used. This helps to ensure that your vehicle's functionality, performance, and safety are not impaired.

Maintenance and repairs

Your vehicle was designed to help keep maintenance requirements to a minimum. Some regular maintenance is required to help ensure that your vehicle runs in a safe, economical, and reliable manner. Please refer to your Warranty & Maintenance Booklet for more detailed information about vehicle maintenance.

When operating the vehicle under more extreme operating conditions, for example when outside temperatures are very low or in very dusty environments, certain maintenance should be performed between the specified intervals.

Usually maintenance and repair work requires special tools, measuring devices, and other equipment that is available to trained vehicle technicians in order to help ensure that your vehicle and all of its systems operate correctly, reliably, and safely. Performing work on the vehicle incorrectly can impair the operation and reliability of your vehicle and may void one or more of your vehicle's warranties.

Technical Modifications

Interference with electronic components, their software, the wiring, and data transfer may cause malfunctions. Because of the way electronic components are interconnected, such malfunctions can also impair systems that are not directly involved.

This means that you risk both a substantial reduction in the operational safety of your vehicle and increased wear of vehicle components.

Some convenience functions, such as the convenience turn signal function, individual door opening function, and displays, can be reprogrammed using special workshop equipment. If functions are reprogrammed, the information and descriptions about these functions in this Owner's Manual may no longer apply to the changed functions.

Audi recommends that an authorized Audi dealer or authorized Audi Service Facility perform and verify any reprogramming procedures.


Maintenance work, repairs, or technical modifications to the vehicle (such as installing additional equipment) that is not performed correctly can cause serious injuries and increase the risk of an accident.


The motor compartment in any motor vehicle is a potentially dangerous area and can cause serious personal injury.


For the sake of the environment

For the sake of the environment

Certain components in your vehicle such as undeployed airbag modules, pretensioners and remote control batteries may contain Perchlorate Material - special handling may apply, See perchlorate. When the vehicle or parts of the restraint system including airbag modules and safety belts with pretensioners are scrapped, all applicable laws and regulations must be observed. Your authorized Audi dealer is familiar with these requirements and we recommend that you have your dealer perform this service for you.


Because of your vehicle's aluminum body design, all service and repair procedures affecting the body should be performed by an authorized Audi dealer or authorized Audi Service Facility, who will perform the work according to Audi factory specifications. Only Audi Genuine Parts are used when Audi experts perform repair or service procedures. Failure to use Audi Genuine Parts or Audi Genuine Accessories or performing repairs incorrectly may result in severe vehicle damage, such as corrosion.

Accessories and parts

Consult with an authorized Audi dealer or authorized Audi Service Facility before purchasing accessories or replacement parts. Audi recommends having your vehicle serviced by an authorized Audi dealer or authorized Audi Service Facility and using Audi Genuine Parts and Audi Genuine Accessories.

Audi does not endorse the use of products and accessories that it has not evaluated, even if the product is approved by a certified testing agency or government agency.



A correctly-installed exterior antenna is required for operating radio equipment in the vehicle. Otherwise, the increased electromagnetic waves can cause malfunctions in the vehicle.

Observe the regulations in the country where the vehicle is being operated and the instructions from the radio equipment manufacturer.

Reporting Safety Defects

Applicable to U.S.A.

If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying

Audi of America, Inc.

2200 Ferdinand Porsche Drive Herndon, VA 20171

If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign. However, NHTSA cannot become involved in individual problems between you, your dealer, or Audi of America, Inc.

To contact NHTSA, you may call the Vehicle Safety Hotline tollfree at 1-888-327-4236 (TTY: 1- 800-424-9153); go to http://;

or write to:

Administrator NHTSA 1200 New Jersey Ave., S.E. West Building Washington, DC 20590.

You can also obtain other information about motor vehicle safety from

Applicable to Canada

If you live in Canada and you believe that your vehicle has a defect that could cause a crash, injury or death, you should immediately inform Transport Canada, Defect Investigations and Recalls.

You should also notify Audi Canada.

Canadian customers who wish to report a safety-related defect to Transport Canada, Defect Investigations and Recalls, may either call Transport Canada toll-free at:

Tel.: 1-800-333-0510 or Tel.: 1-819-994-3328 (Ottawa region and from other countries) TTY for hearing impaired: 1-888-675-6863

or contact Transport Canada by mail at:

Transport Canada Motor Vehicle Safety Investigations Laboratory 80 Noel Street Gatineau, QC J8Z OA1

For additional road safety information, please visit the Road Safety website at:

English: motorvehiclesafety/menu.htm

French: securiteautomobile/menu.htm

Transmitted information
Data collection Applies to: vehicles with data collection Depending on the country, Audi may collect data for the following purposes, for example: offer and product optimization, public safety, provis ...

Technical data
Identification data Vehicle data label Fig. 188 Vehicle identification label The vehicle identification label > fig. 188 is located in the luggage compartment under the cargo floor cover. The veh ...

Other materials:

Audi adaptive cruise control
General information Applies to: vehicles with Audi adaptive cruise control Depending on vehicle equipment, Audi adaptive cruise control may consist of the following functions: Within the limits of the system, the adaptive speed and distance control assists the driver in controlling the speed and the ...

WARNING Wash hands after handling the battery and related accessories: Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Read the following precautions carefully before using the ...

Vanity Mirror Illumination Bulb Removal/Installation
1. Disconnect the negative battery cable.. 2. Insert a tape-wrapped flathead screwdriver into the service hole in the position shown in the figure. 3. Move a flathead screwdriver in the direction of the arrow (1) shown in the figure and detach the lens tab and sunvisor. 4. Detach a ...

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