According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2018 Audi S5 has 1 documented issue. No issues are rated critical, indicating generally reliable ownership. DIY maintenance guides at au7o.io.
On the 2018 Audi S5 3.0L V6 TFSI EA839, audi TSB 2058890/4 applies to 2018 S5, S5 Cabriolet and S5 Sportback vehicles when the instrument cluster displays “Switch off the engine and check coolant” and the engine control module stores P000000 with symptom code 33688. The code indicates a possible malfunction of the vacuum-switchable mechanical coolant pump on the 3.0L V6 TFSI EA839. The bulletin does not support the former 2.9T label, a universal internal coolant leak, coolant migration into the brake booster or wastegate actuators, or a fixed failure mileage.
Common Symptoms
“Switch off the engine and check coolant” message in the instrument cluster
How to Fix
Follow the bulletin in order. Verify coolant level; if low, inspect the cooling system for a leak and repair only the identified source or top up per Audi instructions when no leak is found. Check the ECM software level and apply the specified SVM update only when required. If the concern returns or software is current, test vacuum at N649 and inspect the solenoid and hoses. If the vacuum system works, apply vacuum to the pump hose and verify that the pump sleeve clicks; replace the mechanical coolant pump only when the sleeve does not operate. Use current Audi workshop and parts information.
Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2019 Audi RS5 Sportback, 2018 S5 Cabriolet, S5 Sportback, S5 Coupe, S4 Sedan, A5 Cabriolet, A5 Sportback, A5 Coupe, and 2017-2018 A4 Sedan and A4 Allroad vehicles. Oxidation on the Passenger Occupant Detection System (PODS) connecting cable may cause the software to misdiagnose a malfunction and disable the passenger air bag.
Campaign #19V54700024/07/2019
SEATS
Volkswagen Group of America, Inc. (Audi) is recalling certain 2017-2020 A4 Allroad, A4 Sedan, 2018-2019 RS5 Coupe, 2019 RS5 Sportback, 2018-2020 A5 Cabriolet, A5 Coupe, A5 Sportback, S4 Sedan, S5 Cabriolet, S5 Coupe, and Audi S5 Sportback vehicles. The cable connecting the seat heater to the Passenger Occupant Detection System (PODS) may have a contact fault, causing the software to misdiagnose a malfunction and disable the passenger air bag.
Campaign #21V87400010/11/2021
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2018 Audi S5 has 1 documented issue. The documented issue is: 2018 S5 3.0L Mechanical Coolant-Pump Fault P000000/33688 - Diagnosis Required. None are rated critical, but regular maintenance is recommended.
Is the Audi S5 reliable?
The 2018 Audi S5 has 1 known issue compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
What is the 2018 Audi S5 2018 S5 3.0L Mechanical Coolant-Pump Fault P000000/33688 - Diagnosis Required?
Audi TSB 2058890/4 applies to 2018 S5, S5 Cabriolet and S5 Sportback vehicles when the instrument cluster displays “Switch off the engine and check coolant” and the engine control module stores P000000 with symptom code 33688. The code indicates a possible malfunction of the vacu… Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.