Service bulletins for the 2009 Audi A4
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
775 on file from NHTSA, as of 2026-10-19.
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By component
By trouble code
Only bulletins with component: Equipment and accessories are shown. Show all
| SM 52-2017 | 2018-02-05. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS; EQUIPMENT. This special notice is to inform dealers to return all tail lamps with the part number listed that are below generation 14s. |
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| A911733 2021780- | 2018-02-05. Service bulletin. EQUIPMENT:ELECTRICAL. This informational bulletin contains procedure information for DTC 00468 with error messages on the radio display. |
| Warranty Extensi | 2018-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Extended Warranty Coverage for Your Audi |
| A871447 2010146- | 2017-12-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Supersedes Technical Service Bulletin Group 87 number 12-27 dated April 24, 2012. There is an unpleasant, musty odor coming from the heating and ventilation system. The odor usually occurs when the vehicle has been sitting unused for five hours or more. The odor usually occurs within 20 to 60 seconds after the vehicle is started. Condensation, which is a normal condition in all A/C systems, can cause a musty odor. If the odor is noticeable in the vehicle when the engine is not turned on, the cause may be mold and mildew in the passenger compartment, and not be related to the A/C system. All other possible sources of the odor must be investigated before this bulletin can be performed. |
| A401439 2035854- | 2017-12-14. Service bulletin. EQUIPMENT. Supersedes Technical Service Bulletin Group 40 number 13-37 dated December 3, 2013. A rattling or knocking noise is heard when the car is driven over bumps or uneven road surfaces. This noise is heard after the car has been driven for a while and is warmed up, and when the temperature outside is warm. This condition can be duplicated if the brakes are applied while the car is being driven over bumpy roads. This condition is a comfort concern. Vehicle handling is not affected. High ambient temperatures at the hydraulic guide links cause the noise. |
| A011301 2033001- | 2017-12-05. Service bulletin. EQUIPMENT. Supersedes Technical Service Bulletin Group 01 number 13-83 dated March 29, 2013. MIL on. DTCs are stored in the engine control module. Mileage is greater than 15,000 miles. Under certain driving conditions, the secondary air ports in the cylinder head can accumulate carbon over time, causing a restriction. |
| Accessories Oper | 2017-12-05. Service bulletin. EQUIPMENT. This is an advance notice for Audi of America employees. This notice contains information for the accessories operations technical bulletin. |
| A911472 2024323- | 2017-12-05. Service bulletin. EQUIPMENT. Supersedes Technical Service Bulletin Group 91 number 13-74 dated February 5, 2013. Parking aid sporadically warns of obstacles when none exist. Parking aid is inoperative or provides constant warning. Various parking aid sensor fitting issues. Environmental conditions. |
| A901451 2021151- | 2017-12-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Supersedes Technical Service Bulletin Group 91 number 12-63 dated October 4, 2012. The customer may report flickering of the dash insert lighting, of the A/C control panel lighting, or of the inside light. The condition occurs when the accelerator is pressed while the vehicle is in P or N, or when the vehicle is shifted down when moving downhill. Only vehicles with PR number 8GH may be affected. When high electricity consumers are switched off when the battery is fully charged, the energy generated by the alternator is sometimes too great for the power system to absorb. This may lead to briefly-increased voltage, causing the lights to flicker. |
| A441456 2022563- | 2017-12-05. Service bulletin. EQUIPMENT. Supersedes Technical Service Bulletin Group 44 number 14-50 dated May 14, 2014. Customer feels vibration in the seat, vehicle floor, footwell, pedals, or steering wheel. This condition does not lead to any handling concerns or loss of vehicle control. Customer feels the vibration while driving at highway speeds from 55 ? 80 mph (88 ? 128 km/h). This bulletin is not applicable if this vehicle has a Repair Authorization on this topic. If an applicable Repair Authorization is not followed, the claim will not be paid. |
| A851422 2033596- | 2017-12-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Supersedes Technical Service Bulletin Group 85 number 14-20 dated February 24, 2014. DTCs may be stored in the heating and air conditioning electronics control module. A faulty printed circuit board in the fresh air blower control module and/or the carbon brushes bind in the brush holder and, as a consequence, lose contact with the motor commutator of the fresh air blower can cause Improper operation of the fresh air blower. |
| A011491 2028842- | 2017-12-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Customer vehicle is fitted with unauthorized ECM tuning. All systems on Audi vehicles are engineered to work together using the factory calibrations, which have been extensively tested and validated before the vehicle is released for sale. The Audi warranty coverage is based on the results of developing the vehicle under the factory calibration. If a vehicle is equipped with unauthorized hardware or software tuning, it can cause stress on vehicle components outside of intended design limits, and can cause damage and additional wear. Subsequently, factory powertrain warranty coverage is reduced or voided. |
| A911463 2028190- | 2017-12-05. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM:SOFTWARE. Supersedes Technical Service Bulletin Group 91 number 13-08 dated September 20, 2013. The customer would like to add a different navigation map database for countries outside of the USA or Canada. The customer would like to change the MMI system language to a different language that is not already supported by MMI. When a song is being played and the track information for that song contains foreign language characters, the driver information system (DIS) in the cluster correctly displays the characters, but the MMI display does not. |
| A871458 2035582- | 2017-12-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Supersedes Technical Service Bulletin Group 87 number 13-46 dated October 21, 2013. The A/C Compressor has been diagnosed as faulty and will be replaced under warranty. When performing replacement of an A/C Compressor under warranty, the amount of refrigerant and oil recovered must be documented. |
| A911466 2020399- | 2017-12-05. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Supersedes Technical Service Bulletin Group 91 number 14-24 dated January 24, 2014. The Audi MMI system will not play audio files from an SD card. The MMI system does not recognize the audio files on the SD card. The MMI system reports that the audio files on the SD card are damaged. The audio files on the SD card will play on one Audi vehicle, but will not play on a different Audi vehicle. The vehicle is equipped with RNS-E, Concert Radio with SD card slot, MMI3G, MMI3G+, or MIB. |
| 2013_06_ATU Audi | 2017-12-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This document contains information on the Audi side assist update. |
| 2013 06 Audi Bra | 2017-12-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; SERVICE BRAKES. This document contains information on the Audi braking guard. |
| A871344 2020124- | 2017-12-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Supersedes Technical Service Bulletin Group 87 number 13-43 dated July 12, 2013. Air conditioning is inoperative. The HVAC blower functions normally. The A/C pressure/temperature sensor, G395, leaks refrigerant. This causes sensor G395 to show an incorrect or implausible value when reading MVBs. An incorrect signal or a low refrigerant level in the system can cause the air conditioning compressor to deactivate. Battery discharged; however, when charged, there is no bus silence when vehicle ignition is off. The LIN cable connecting the vehicle electrical system control module, J519, to sensor G395 is pinched or cut. This affects the A4/S4, A5/S5 Coupe and Cabriolet, and Q5 vehicles. The A6 and A8 are not affected by this type of failure. The pressure sensor G395/G65 sends an incorrect signal that prevents bus silence and the battery is discharged. Sensor G395 is a LIN slave of the vehicle electrical system control module. The vehicle electrical system control module transfers the information provided by the sensor via the comfort data bus to the climate control module, J255. |
| A911302 2018187- | 2017-12-05. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Supersedes Technical Service Bulletin Group 91 number 11-20 dated October 21, 2011. Customer may report that cracking, grinding, rattling, humming, whining, or similar interference is coming from one or more speakers. Parts of the speakers (such as the brackets, cables, or covers) or parts of the interior fittings (such as door covers, rear shelf, facings, or covers) can vibrate at certain frequencies, causing noises. The radio tuner or other control modules may be affected by electromagnetic interference from aftermarket electronic devices. |
| A911393 2034784- | 2017-12-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL. Some telephone numbers that were downloaded via Bluetooth® are stored with additional, unrelated numbers that do not appear in the contact on the customer"s cellular phone. These telephone numbers are displayed incorrectly on the radio display. The software incorrectly stores the downloaded phone numbers. |
| A961367 2019260- | 2017-12-05. Service bulletin. EQUIPMENT:ELECTRICAL. Supersedes Technical Service Bulletin Group 96 number 12-37 dated June 11, 2012. The customer may report that the handheld transmitter cannot be programmed to the garage door opener control module, J530. The customer's door opener system may not be compatible with J530. The battery in the handheld transmitter may be too weak for a good signal. The battery charge may be sufficient to operate the garage door opener, but not enough to program the remote transmitter to the vehicle system. In A4 Model Years 2005 - 2006 and A3 Model Year 2009, the actual location of the garage door opener control module differs from the location shown in the owner's manual (opposite side of front bumper). The customer may misunderstand the programming procedure, particularly if the customer's HomeLink® opener system is using an alternate code. The handheld transmitter's programming function may become inoperative, or the transmitter is too far away from J530. Interference prevents the communication between handheld transmitter and J530. If the vehicle flashes during the programming of a handheld transmitter, this does not necessarily indicate that the programming was successful; it only indicates that the vehicle has recognized and saved a signal. |
| A961368 2029384- | 2017-12-05. Service bulletin. EQUIPMENT:ELECTRICAL. Supersedes Technical Service Bulletin Group 96 number 13-64 dated June 20, 2013. The customer is able to program one or more of the Homelink buttons using their garage door remote, but after a few days or weeks, one or more of the programmed Homelink buttons no longer functions. The LED on the Homelink button that is no longer functioning now flashes slowly, indicating that no programming is stored. The customer's transmitter operates at 295Mhz. No DTCs are stored in any control units. At the workshop, the Homelink system can be programmed to the workshop garage door successfully. No trouble is found. The garage door opener control module, J530, was designed with an operational frequency range in which the 295Mhz frequency works correctly during the initial programming of the system. Over time, the transmitting frequency can drift out of range (especially in warmer climates), causing the system to lose its programming. |
| A911392 2030947- | 2017-12-05. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:SOFTWARE. Supersedes Technical Service Bulletin Group 91 number 12-61 dated September 25, 2012. The customer complains that when he or she is trying to place a phone call from the vehicle while using a Bluetooth®-connected phone, the phone call disconnects before it begins and an error shows on the MMI display. The message may be "Function not supported" or "Network error". The customer is using a phone with the Android operating system. In addition, Skype®, or another network-based communication software, is installed on the phone. Call can be placed directly from the phone without a problem. When the phone gets the request to place a call from the vehicle, a prompt appears on the phone asking the user to choose how the call should be placed. If the prompt is ignored, the MMI system disconnects the call assuming the phone is not responding. |
| A911388 2021780- | 2017-12-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Supersedes Technical Service Bulletin Group 91 number 10-70 dated October 26, 2010. Sequence of error messages are seen on the radio display screen after a CD was loaded into or removed from the internal CD drive. "Drive defective. The error could be corrected by resetting it (see radio system owner's manual). Otherwise, contact your Audi dealer." "The CD-drive is damaged and was therefore deactivated." The CD drive cannot be selected in the Source list and is described as "damaged." After the ignition is cycled or a radio reset performed, the CD drive is fully operational. DTC 00468 (CD-ROM Drive -R92- Faulty) is stored in the radio (address word 56). The DTC will be sporadic if the ignition has been cycled or a radio reset performed and will automatically be cleared after 40 ignition cycles without a reoccurrence. Only vehicles with the CAN-based generation 3 radio (Concert (PR 8UQ) or Symphony (PR 8YN)) are affected. |
| A871343 2020124- | 2017-12-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Supersedes Technical Service Bulletin Group 87 number 13-42 dated June 11, 2013. Air conditioning is inoperative. The HVAC blower functions normally. Battery discharged; however, when charged, there is no bus silence when vehicle ignition is off. The A/C pressure/temperature sensor, G395, leaks refrigerant. This causes sensor G395 to show an incorrect or implausible value when reading MVBs. An incorrect signal or a low refrigerant level in the system can cause the air conditioning compressor to deactivate. The LIN cable connecting the vehicle electrical system control module, J519, to sensor G395 is pinched or cut. This affects the A4/S4, A5/S5 Coupe and Cabriolet, and Audi Q5 vehicles. The A6 and A8 are not affected by this type of failure. The pressure sensor G395/G65 sends an incorrect signal that prevents bus silence and the battery is discharged. Sensor G395 is a LIN slave of the vehicle electrical system control module. The vehicle electrical system control module transfers the information provided by the sensor via the comfort data bus to the climate control module, J255. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.