2021 Audi A4 Technical Service Bulletins

1,057 technical service bulletins (TSBs) are on record for the 2021 Audi A4. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10193225May 4, 2021Steering. This bulletin contains repair instruction for when DTC C110DF0 is stored and the yellow steering lamp is on.
• 10193273May 3, 2021Equipment. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
• 10191558Apr 30, 2021Electrical system. Elsa2Go campaign information is now 100% aligned with ElsaPro. This update to Elsa2Go ensures that both systems are displaying the same campaign information, including OPEN/CLOSED status, repair date as well as criterions at the same time without any discrepancy.
• 10191141Apr 29, 2021Equipment. This information bulletin contains a background on the outside air temperature reading.
• 10191042Apr 26, 2021Electrical system. This informational bulletin explains why the version information pops-up.
• 10191544Apr 21, 2021Electrical system. This bulletin contains information on noises from the instrument cluster installation area.
• 10191002Apr 20, 2021Electrical system, Suspension. This bulletin contains repair instructions for DTC B200FF0.
• 10190523Apr 15, 2021Equipment. This bulletin contains a cleaning procedure from leftover residue from suction cups or labels.
• 10190516Apr 13, 2021Electrical system. This bulletin states that if DTC P227900, P001600, and DTC P001700 recorded together in the ECM to follow the isntructions on replacing the intake manifold pressure sender.
• 10190286Apr 8, 2021Equipment. This bulletin contains instructions for when the nav files are corrupted during an update.
• 10190280Apr 1, 2021Electrical system, Latches, locks and linkages. This technical service bulletin provides troubleshooting information for the vehicle locking system.
• 10190277Apr 1, 2021Equipment. This bulletin explains why the compartment lid cannot be closed using the buttons on the key sometimes.
• 10190238Apr 1, 2021Engine. This bulletin contains repair instructions for 3.0 and 2.9 TFSI engines that have oil loss around the engine compartment, front end, and underbody.
• 10189653Mar 29, 2021Equipment. This bulletin contains repair instructions for when there is radio static when the rear heater is active.
• 10189529Mar 25, 2021Engine cooling. This bulletin states that this is a normal condition and to not perform any repairs.
• 10189324Mar 19, 2021Equipment. This bulletin contains instructions for addressing an insufficient or uneven heating performance from the HVAC system.
• 10189323Mar 19, 2021Body and structure. This bulletin contains instructions for when there is a creaking noise in the floor area while strongly braking or steering where the vehicle's body is twisted.
• 10189325Mar 18, 2021Exterior lighting. This informational bulletin contains information on the different shading of LED headlights.
• 10189329Mar 17, 2021Electrical system. eSelf-Study Program 970893 - Third-generation modular infotainment matrix.
• 10189144Mar 16, 2021Steering. This bulletin contains repair instructions for repositioning the intermediate steering shaft when there is squeaking noises from the steering column.
• 10189150Mar 15, 2021Electrical system. This bulletin contains instructions for when the nav files are corrupted during an update.
• 10189148Mar 10, 2021Electrical system. This informational bulletin contains instructions about Apple Carplay cannot be started with Wi-Fi.
• 10189141Mar 9, 2021Engine cooling. This bulletin contains instructions for determining if a repair is needed when coolant touches a poly V-belt and/or a toothed belt.
• 10188602Mar 2, 2021Equipment. This informational bulletin contains instructions about updating the navigation map.
• 10188590Mar 2, 2021Engine cooling. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
• 10188614Mar 1, 2021Electrical system. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
• 10187973Feb 26, 2021Visibility (wipers, defrost, mirrors). This bulletin contains repair instructions for when the rear window defog button will light up and then turn off.
• 10187905Feb 26, 2021Equipment. Q5: Vehicle Prepartion Section: REMOVED: "Set adaption channel to enable CD Ripping using Guided Functions" Settings Section: REMOVED: "(if equipped)" from Turn off Manual Speed Warning On Hoist Inspection Section: ADDED to Install Wheel Bolt Covers: "When installing, ensure proper alignment to the valve stem (indentation in the wheel) lines up with the tab on the center cap to ensure correct mounting" Driver…
• 10187578Feb 25, 2021Brakes. This bulletin contains repair instructions for when the vehicle sporadically does not start and there is a hard brake pedal concern.
• 10187575Feb 25, 2021Brakes, Equipment. This informational contains an explanation for when the customer hears creaking noises when braking at almost standstill (crawling when pulling away or briefly before standstill).
• 10187573Feb 24, 2021Equipment. This special notice is to inform dealers to return the part numbers listed (State of California only).
• 10187509Feb 18, 2021Electrical system. This bulletin contains guidance for submitting warranty wiring repairs.
• 10187508Feb 17, 2021Exterior lighting. This bulletin contains instructions for addressing condensation in the headlights.
• 10187506Feb 17, 2021Equipment. This bulletin contains instructions for when the nav files are corrupted during an update.
• 10187353Feb 17, 2021Equipment. This bulletin states to create a PSS record when last destinations, favorites, and home/work addresses are sporadically lost.
• 10187352Feb 17, 2021Electrical system. This bulletin states to create a PSS record when the message "SOS - Emergency call malfunction, please contact service" is displayed in the instrument cluster and DTCs B129B11 and B239C11 are stored in the control module for emergency call module and communication unit.
• 10187326Feb 16, 2021Engine cooling. This bulletin contains repair instructions for 3.0 and 2.9 TFSI engines that have oil loss around the engine compartment, front end, and underbody.
• 10187510Feb 12, 2021Equipment. This Document informs dealers on the new A/C evaporator warranty extension for 2017-2021 A4/S4/Q7 and 2018-2021 A5/S5/Q5 vehicles
• 10187349Feb 10, 2021Equipment. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
• 10186994Feb 10, 2021Brakes. This technical service bulletin provides troubleshooting for brake noise.
• 10186993Feb 10, 2021Brakes. This informational bulletin provides diagnostic information for brake conditions.
• 10186992Feb 10, 2021Steering. This bulletin contains instructions for when the vehicle pulls to one side or the steering wheel is crooked.
• 10186983Feb 9, 2021Equipment. This informational bulletin covers the condition of when license plate mounting bracket threaded inserts are stripped.
• 10186982Feb 9, 2021Wheels. This bulletin provides information regarding vibrations or movement that are felt in the wheel.
• 10187000Feb 4, 2021Equipment. This informational contains instruction on how to document optical concerns for warranty claims.
• 10186995Feb 4, 2021Electrical system. This bulletin contains instructions for when the nav files are corrupted during an update.
• 10186984Feb 3, 2021Seats. This bulletin contains instructions for when the second row backrests won't fold.
• 10186945Feb 2, 2021Engine cooling. This bulletin contains instructions for using the UV additive to find engine oil leaks.
• 10186510Jan 29, 2021Engine cooling. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
• 10186508Jan 29, 2021Engine cooling. This bulletin contains repair instructions for 3.0 and 2.9 TFSI engines that have oil loss around the engine compartment, front end, and underbody.

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