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Service bulletins for the 2013 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.

662 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
30 13 18 20282292022-05-31. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:MANUAL TRANSMISSION; ENGINE. Vehicle does not start or only starts when the clutch pedal is pressed very firmly
28 13 21 20175552022-05-31. Service bulletin. ENGINE; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. Key does not stay or engage in ignition lock
27 14 24 20253602022-05-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Low battery charge: Diagnosis tips and TAC instructions
27 13 19 20290102022-05-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Low battery charge: excess current draw location
27 13 18 20232822022-05-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery testing and charging - vehicles with BDM
26 13 18 20279452022-05-31. Service bulletin. EQUIPMENT:MECHANICAL; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Humming or metallic rattling noise from under the vehicle, heard most consistently during engine idle or slow acceleration. Initial inspection indicates that the noise is coming from the exhaust system. Relative movements in the rear mounting of the exhaust system (rear silencer).
A9022582059335_32022-05-05. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains information on noises from the instrument cluster installation area.
37 14 47 20290272022-05-02. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Customer may report transmission warning light is illuminated. In some cases, the vehicle will not move after being started and placed into gear. After key cycle, the vehicle drives without restriction. The DTCs are stored due to an issue with the transmission control module software.
37 14 42 20290272022-05-02. Service bulletin. ELECTRICAL SYSTEM:IGNITION; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN. Customer may report transmission warning light is illuminated. In some cases, the vehicle will not move after being started and placed into gear. After key cycle, the vehicle drives without restriction.
37 14 34 20289852022-05-02. Service bulletin. ELECTRICAL SYSTEM:IGNITION; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; UNKNOWN OR OTHER; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Transmission warning may appear in instrument cluster. After ignition cycle, the warning message is no longer present. The fault occurs with ATF temperature below 60o C. Check for this temperature range in the extended environmental conditions of the diagnosis protocol. This TSB only applies if the ATF level is correct and there are no leaks.
37 14 33 20293052022-05-02. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE. Further transmission control module (TCM), J217 (address word 02), software calibration to improve shift concerns.
37 14 29 20290272022-05-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Customer may report transmission warning light is illuminated. In some cases, the vehicle will not move after being started and placed into gear. After key cycle, the vehicle drives without restriction. The DTCs are stored due to an issue with the transmission control module software.
37 14 24 20371272022-05-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN; ELECTRICAL SYSTEM. A jerky accelerator response is felt when the vehicle is pulled away from a stop in reverse. Incorrect calibration of clutch program. New software in the transmission control module (TCM), J217 (address word 02) addressed the condition.
37 14 22 20289852022-05-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). The fault occurs with ATF temperature below 60° C. Check for this temperature range in the extended environmental conditions of the diagnosis protocol. This TSB only applies if the ATF level is correct and there are no leaks.
37 13 99 20290272022-05-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. The DTCs are stored due to an issue with the transmission control module software. Specific DFCCs are stored as a result of the following situations: - DTC P060A00 with DFCC 8692 can be logged when a driving mode (Drive or Reverse) is selected within one second of selecting Neutral, while the vehicle rolls at a speed less than 2 mph (such as when the vehicle is being maneuvered in or out of a parking spot). - DTC P060A00 with DFCC 8694 can be logged when the gear is quickly changed from Park to Neutral, due to a low diagnosis threshold. - DTC P060A00 with DFCC 12480 can be logged when the gear is changed using the Tiptronic function, due to a low diagnosis threshold.
37 13 79 20293052022-05-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Further TCM software calibration to improve shift concerns.
37 13 17 20290272022-05-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). The DTCs are stored due to an issue with the transmission control module software. Specific DFCCs are stored as a result of the following situations: ? DTC P060A00 with DFCC 8692 can be logged when a driving mode (Drive or Reverse) is selected within one second of selecting Neutral, while the vehicle rolls at a speed less than 2 mph (such as when the vehicle is being maneuvered in or out of a parking spot). ? DTC P060A00 with DFCC 8694 can be logged when the gear is quickly changed from Park to Neutral, due to a low diagnosis threshold. ? DTC P060A00 with DFCC 12480 can be logged when the gear is changed using the Tiptronic function, due to a low diagnosis threshold.
37 13 09 20287152022-05-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:GEARS. After a mechatronics, torque converter, or complete gearbox replacement, the clutches must be adapted to the new component. This requires a gradual move of the clutch linings toward the optimal operating points in the most diverse load conditions. As a result, sporadic driving power disruptions lasting for less than a second or reduced shift comfort are possible over the first 500 miles. This is normal, and these issues will decrease over time. The issues can also occur if the adaptation values of the gearbox were deleted.
37 13 02 20290272022-05-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE. The DTCs are stored due to an issue with the transmission control module software. Specific DFCCs are stored as a result of the following situations: ? DTC P060A00 with DFCC 8692 can be logged when a driving mode (Drive or Reverse) is selected within one second of selecting Neutral, while the vehicle rolls at a speed less than 2 mph (such as when the vehicle is being maneuvered in or out of a parking spot). ? DTC P060A00 with DFCC 8694 can be logged when the gear is quickly changed from Park to Neutral, due to a low diagnosis threshold. ? DTC P060A00 with DFCC 12480 can be logged when the gear is changed using the Tiptronic function, due to a low diagnosis threshold.
37 13 01 20289852022-05-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). The fault occurs with ATF temperature below 60o C. Check for this temperature range in the extended environmental conditions of the diagnosis protocol. This TSB only applies if the ATF level is correct and there are no leaks.
37 12 73 20317752022-05-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE. Customer may report transmission warning lamp illuminated in instrument cluster. DTC P074100 (Torque Converter Clutch Circuit Performance or Stuck Off) is stored in TCM. Diagnostic error in TCM software.
30 13 18 20282292022-05-02. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; ELECTRICAL SYSTEM. There may be clutch mechanism wear. Customer may report that the vehicle does not start or only starts when the clutch pedal is pressed very firmly. The message ?Press clutch pedal to start vehicle? may appear in the instrument cluster.
28 13 21 20175552022-05-02. Service bulletin. ELECTRICAL SYSTEM. It is possible that objects have been inserted into the ignition lock, which causes the slide of the ignition lock to become stuck in the rear part of the lock (S-contact position). The stuck slide is not allowed to return to the starting point (0-position).
27 14 24 20253602022-05-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. This TSB provides basic diagnosis steps for discharged batteries, general tips for working with batteries, and system verification steps to ensure that the vehicle is configured correctly. For additional information on known current draw issues, refer to the following TSBs: ? 2014127: 27 Battery dead or low after returning to the vehicle (2007 A6, A8, Q7) ? 2019143: 27 Battery discharged on some vehicles with Advanced Key (2005 - 2008 A6, Q7)
A9122752024323_92022-03-04. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.