2018 Audi S4 Technical Service Bulletins

797 technical service bulletins (TSBs) are on record for the 2018 Audi S4. 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.

• 10190523Apr 15, 2021Equipment. This bulletin contains a cleaning procedure from leftover residue from suction cups or labels.
• 10190285Apr 1, 2021Air bags, Electrical system. This bulletin contains a software update for when "Safe CP" and Airbag Warning with various DTCs logged.
• 10190277Apr 1, 2021Equipment. This bulletin explains why the compartment lid cannot be closed using the buttons on the key sometimes.
• 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.
• 10189528Mar 23, 2021Engine cooling. This bulletin contains instructions for documenting the "Please reduce Oil Level" message in the instrument cluster potentially with an Engine Warmup request.
• 10189324Mar 19, 2021Equipment. This bulletin contains instructions for addressing an insufficient or uneven heating performance from the HVAC system.
• 10189325Mar 18, 2021Exterior lighting. This informational bulletin contains information on the different shading of LED headlights.
• 10189144Mar 16, 2021Steering. This bulletin contains repair instructions for repositioning the intermediate steering shaft when there is squeaking noises from the steering column.
• 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.
• 10188589Mar 8, 2021Engine cooling. This bulletin contains repair instructions for when oil is lost in the engine compartment.
• 10188604Mar 2, 2021Electrical system. This bulletin contains general software update instructions for vehicles with PR Code 7UH.
• 10188602Mar 2, 2021Equipment. This informational bulletin contains instructions about updating the navigation map.
• 10188595Mar 2, 2021Electrical system. This bulletin contains repair instructions for when the message "four-wheel drive malfunction" shows up sporadically in the instrument cluster with DTC C05ED00.
• 10188591Mar 2, 2021Equipment. This bulletin contains instructions for DTCs P218100, P017B00, P308100, and P01E400.
• 10188590Mar 2, 2021Engine cooling. This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.
• 10188548Mar 2, 2021Electrical system. This bulletin contains instructions for documenting the "Please reduce Oil Level" message in the instrument cluster potentially with an Engine Warmup request.
• 10188614Mar 1, 2021Electrical system. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
• 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).
• 10187977Feb 23, 2021Equipment. This bulletin states to not perform any repairs and show the customer how to manually re-enable the map.
• 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.
• 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.
• 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.
• 10186569Jan 25, 2021Brakes. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning.
• 10186590Jan 18, 2021Equipment. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
• 10185651Jan 13, 2021Engine cooling, Equipment. This bulletin contains instructions for when there may be a noise from the exhaust flap or there are DTCs sporadically stored in the ECM.
• 10185672Jan 12, 2021Body and structure. This informational bulletin outlines proper warranty procedure for optical defects.
• 10185664Jan 12, 2021Equipment, Electrical system. This bulletin contains repair instruction for when DTC C110DF0 is stored and the yellow steering lamp is on.
• 10185232Dec 18, 2020Equipment, Engine. This bulletin contains instructions for addressing discoloration due to moisture on a new vehicle.
• 10185155Dec 18, 2020Equipment. This special notice is to inform dealers to return the part numbers listed (State of California only).
• 10185256Dec 17, 2020Electrical system, Equipment. This bulletin contains repair instructions for when cables are hanging in view with no DTCs.
• 10185202Dec 10, 2020Equipment, Electrical system. This bulletin contains repair instructions for when the message "four-wheel drive malfunction" shows up sporadically in the instrument cluster with DTC C05ED00.
• 10185230Dec 7, 2020Electrical system. This bulletin contains instructions for when DTC U101300 is logged with sports differential warning lamps or messages.
• 10185281Dec 1, 2020Electrical system, Equipment. This bulletin contains instructions to update eligible cars from Google Earth to the new service provided by HERE.
• 10183457Nov 18, 2020Brakes, Equipment. This bulletin contains instructions for addressing an ABS warning light with DTCs C050200 and/or C050800.
• 10183456Nov 17, 2020Brakes, Equipment. This bulletin contains instructions for addressing a brake pad wear indicator light with no DTCs.
• 10183467Nov 10, 2020Electrical system. This bulletin contains a software update that correct when the Google Map setting is lost.
• 10182518Nov 10, 2020Electrical system, Back-over prevention (rear camera). This bulletin contains a software update for when the rearview/overhead view camera and the optical parking aid are sporadically not switched on when moving into reverse
• 10182517Nov 10, 2020Equipment, Electrical system. This bulletin contains a software update for when the MMI screens go blank and the system reboots, it may have stored DTC U10CF00 and/or B13B901.

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